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STOCK BASED COMPENSATION (Details) (USD $)
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0 Months Ended |
12 Months Ended |
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12 Months Ended |
0 Months Ended |
12 Months Ended |
1 Months Ended |
12 Months Ended |
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Jul. 02, 2012
Subordinated convertible debt
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Dec. 31, 2012
Subordinated convertible debt
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Dec. 31, 2012
Subordinated convertible debt
Placement Agent
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Dec. 31, 2012
2004 plan
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Dec. 31, 2012
2005 plan
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Dec. 31, 2012
2011 plan
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Dec. 31, 2012
Employee
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Dec. 31, 2011
Employee
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Dec. 31, 2012
Nonemployee
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Dec. 31, 2011
Nonemployee
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Dec. 31, 2012
Warrants
Employee
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Dec. 31, 2011
Warrants
Employee
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Dec. 31, 2012
Warrants
Nonemployee
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Dec. 31, 2011
Warrants
Nonemployee
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Dec. 31, 2012
Warrants
Nonemployee
Minimum
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Dec. 31, 2012
Warrants
Nonemployee
Maximum
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Dec. 31, 2012
Stock Options
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Dec. 31, 2011
Stock Options
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Dec. 31, 2012
Stock Options
Employee
item
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Dec. 31, 2011
Stock Options
Employee
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Dec. 31, 2012
Stock Options
Warrants
Employee
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Dec. 31, 2011
Stock Options
Warrants
Employee
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Dec. 31, 2012
Restricted stock
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Jul. 02, 2012
Restricted stock
Subordinated convertible debt
Placement Agent
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Dec. 31, 2012
Restricted stock
Subordinated convertible debt
Placement Agent
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Jun. 30, 2012
Restricted stock
Directors
item
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Dec. 31, 2012
Restricted stock
Directors
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Dec. 31, 2012
Stock Options and Stock Warrants
Employee
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Dec. 31, 2011
Stock Options and Stock Warrants
Employee
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Dec. 31, 2012
Stock Options and Stock Warrants
Employee
Minimum
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Dec. 31, 2012
Stock Options and Stock Warrants
Employee
Maximum
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| SHARE-BASED COMPENSATION |
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| Total Compensation Expense |
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$ 891,000 |
$ 806,000 |
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$ 229,000 |
$ 594,000 |
$ 859,000 |
$ 434,000 |
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$ 486,000 |
$ 212,000 |
$ 715,000 |
$ 806,000 |
$ 176,000 |
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$ 200,000 |
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| Weighted average significant assumptions used to estimate the fair value |
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| Dividend Yield (as a percent) |
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0.00% |
0.00% |
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| Dividend Yield (as a percent) |
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0.00% |
0.00% |
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| Expected Volatility (as a percent) |
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65.60% |
40.00% |
46.10% |
| Expected Volatility (as a percent) |
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62.00% |
38.50% |
47.80% |
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| Risk-Free Interest Rate (as a percent) |
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1.23% |
0.25% |
1.05% |
| Risk-Free Interest Rate (as a percent) |
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0.86% |
0.25% |
0.72% |
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| Expected Term |
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4 years 8 months 12 days |
4 years |
6 years 6 months |
| Expected Term |
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1 year 8 months 12 days |
3 years |
10 years |
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| Additional disclosure |
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| Number of employee stock option plans |
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3 |
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| Maximum number of shares of the company's stock that may be issued |
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347,288 |
578,812 |
2,100,000 |
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| Number of Shares |
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| Outstanding at the beginning of the period (in shares) |
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575,277 |
212,404 |
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| Stock Dividend (in shares) |
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73,393 |
16,298 |
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| Granted (in shares) |
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996,200 |
487,000 |
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| Exercised (in shares) |
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(66,867) |
(37,338) |
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| Forfeited (in shares) |
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(186,483) |
(98,807) |
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| Expired (in shares) |
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(40,659) |
(4,280) |
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| Outstanding at the end of the period (in shares) |
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1,350,861 |
575,277 |
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| Exercisable at the end of the period (in shares) |
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268,457 |
213,178 |
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| Weighted Average Exercise Price |
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| Outstanding at the beginning of the period (in dollars per share) |
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$ 3.90 |
$ 1.79 |
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| Stock Dividend (in dollars per share) |
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$ 4.25 |
$ 3.79 |
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| Granted (in dollars per share) |
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$ 4.46 |
$ 4.77 |
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| Exercised (in dollars per share) |
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$ 1.39 |
$ 1.74 |
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| Forfeited (in dollars per share) |
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$ 4.31 |
$ 4.53 |
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| Expired (in dollars per share) |
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$ 2.78 |
$ 2.26 |
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| Outstanding at the end of the period (in dollars per share) |
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$ 176 |
$ 3.90 |
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| Exercisable at the end of the period (in dollars per share) |
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$ 4.22 |
$ 2.66 |
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| Weighted Average Remaining Contract Life |
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| Outstanding - Weighted Average Remaining Contract Life |
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6 years 7 months 6 days |
8 years 3 months 18 days |
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2 years 4 months 24 days |
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| Exercisable at the end of the period |
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5 years 2 months 12 days |
5 years 8 months 12 days |
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| Aggregate Intrinsic Value |
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| Outstanding at the end of the period (in dollars) |
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900,426 |
370,606 |
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| Exercisable at the end of the period (in dollars) |
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260,123 |
370,606 |
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| Additional disclosures |
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| Weighted average grant date fair value of options granted (in dollars per share) |
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$ 1.36 |
$ 2.21 |
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| Unrecognized compensation expense |
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1,200,000 |
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| Period of recognition of compensation expense |
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2 years 3 months 18 days |
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3 years |
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| Total intrinsic value of options exercised |
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200,000 |
100,000 |
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| Number of Shares |
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| Outstanding at the beginning of the period (in shares) |
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1,720,020 |
1,289,412 |
1,153,574 |
953,074 |
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| Stock Dividend (in shares) |
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86,004 |
71,162 |
94,054 |
86,236 |
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| Granted (in shares) |
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450,000 |
777,500 |
300,000 |
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| Exercised (in shares) |
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(70,433) |
(28,941) |
(179,452) |
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| Forfeited (in shares) |
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(20,121) |
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| Expired (in shares) |
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(34,730) |
(6,284) |
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| Outstanding at the end of the period (in shares) |
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1,806,024 |
1,720,020 |
1,961,457 |
1,153,574 |
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| Exercisable at the end of the period (in shares) |
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1,539,126 |
1,345,020 |
1,950,957 |
1,153,574 |
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| Weighted Average Exercise Price |
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| Outstanding at the beginning of the period (in dollars per share) |
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$ 3.10 |
$ 2.64 |
$ 3.85 |
$ 3.13 |
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| Stock Dividend (in dollars per share) |
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$ 2.99 |
$ 2.93 |
$ 3.85 |
$ 3.84 |
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| Granted (in dollars per share) |
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$ 4.18 |
$ 3.82 |
$ 4.91 |
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| Exercised (in dollars per share) |
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$ 2.08 |
$ 1.26 |
$ 1.78 |
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| Forfeited (in dollars per share) |
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$ 2.38 |
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| Expired (in dollars per share) |
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$ 3.82 |
$ 3.11 |
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| Outstanding at the end of the period (in dollars per share) |
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$ 2.99 |
$ 3.10 |
$ 3.78 |
$ 3.85 |
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| Exercisable at the end of the period (in dollars per share) |
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$ 2.79 |
$ 2.78 |
$ 3.77 |
$ 3.85 |
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| Weighted Average Remaining Contract Life |
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| Outstanding at the end of the period |
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5 years 7 months 6 days |
6 years 7 months 6 days |
1 year 8 months 12 days |
2 years |
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| Exercisable at the end of the period |
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5 years 1 month 6 days |
5 years 9 months 18 days |
1 year 8 months 12 days |
2 years |
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| Aggregate Intrinsic Value |
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| Outstanding at the end of the period (in dollars) |
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|
|
3,181,251 |
1,676,791 |
1,934,826 |
437,432 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Exercisable at the end of the period (in dollars) |
|
|
|
|
|
|
|
|
|
|
3,014,103 |
1,666,991 |
1,930,836 |
437,432 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Additional disclosure related to warrants |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Unrecognized compensation expense |
|
|
|
|
|
|
|
|
|
|
200,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
700,000 |
|
|
|
|
| Weighted average remaining service period |
|
|
|
|
|
|
|
|
|
|
2 years 4 months 24 days |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Total intrinsic value of employee warrants exercised |
|
|
|
|
|
|
|
|
|
|
|
400,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Additional disclosure related to equity instrument other than option |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Expiration term of warrant |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 years |
10 years |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Period of restriction on restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 year |
|
3 years |
|
|
|
|
|
| Number of directors |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
9 |
|
|
|
|
|
| Debt issued |
7,500,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Fixed interest rate (as a percent) |
8.00% |
8.00% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Share based compensation |
|
|
|
|
|
|
|
|
772,000 |
212,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
100,000 |
|
|
|
|
|
|
| Share based compensation |
|
|
100,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Deferred financing and prepaid services |
|
|
|
|
|
|
|
|
(783,000) |
(330,000) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Amortization of prepaid services |
|
|
|
|
|
|
|
|
$ 696,000 |
$ 108,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Number of Shares |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Granted (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
320,000 |
50,000 |
|
270,000 |
|
|
|
|
|
| Stock Dividend (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
16,000 |
|
|
|
|
|
|
|
|
| Vested (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(52,500) |
|
|
|
|
|
|
|
|
| Unvested at the end of the period (in shares) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
283,500 |
|
|
|
|
|
|
|
|
| Weighted Avg. Grant Date Fair Value |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock Dividend (in dollars per share) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 3.25 |
|
|
|
|
|
|
|
|
| Granted (in dollars per share) |
|
$ 1.45 |
|
|
|
|
|
|
|
|
|
|
$ 0.99 |
$ 1.45 |
|
|
|
|
|
|
|
|
$ 3.25 |
$ 3.50 |
|
$ 3.20 |
|
|
|
|
|
| Vested (in dollars per share) |
|
|
|
|
|
|
|
|
|
|
|
$ 3.50 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Unvested at the end of the period (in dollars per share) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ 3.20 |
|
|
|
|
|
|
|
|