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STOCK-BASED COMPENSATION PLANS (Details) (USD $)
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3 Months Ended |
9 Months Ended |
12 Months Ended |
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2010
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Jun. 30, 2012
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Dec. 31, 2011
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of Common Stock approved by the additional amendment (in shares) |
150,000 |
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150,000 |
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Stock Options [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of Common stock shares originally authorized (in shares) |
425,000 |
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425,000 |
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| Number of Common stock shares authorized under the plan (in shares) |
775,000 |
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775,000 |
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625,000 |
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| Shares available for issuance (in shares) |
103,768 |
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103,768 |
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| Minimum number of plan administrators |
2 |
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2 |
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| Vested options (in shares) |
254,937 |
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254,937 |
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| Unvested options (in shares) |
233,330 |
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233,330 |
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| Fair value assumptions [Abstract] |
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| Expected life |
0 years |
[1],[2] |
0 years |
[1],[2] |
5 years 1 month 10 days |
[1] |
2 years 11 months 19 days |
[1] |
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| Risk-free interest rate (in hundredths) |
0.00% |
[2],[3] |
0.00% |
[2],[3] |
0.90% |
[3] |
1.25% |
[3] |
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| Expected volatility (in hundredths) |
0.00% |
[2],[4] |
0.00% |
[2],[4] |
50.00% |
[4] |
57.00% |
[4] |
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| Expected dividend yield (in hundredths) |
0.00% |
[2] |
0.00% |
[2] |
4.83% |
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4.46% |
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| Expected Forfeiture (in hundredths) |
0.00% |
[2],[5] |
0.00% |
[2],[5] |
0.00% |
[5] |
10.50% |
[5] |
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| Options outstanding [Rollforward] |
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| Outstanding, beginning balance (in shares) |
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410,689 |
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| Granted (in shares) |
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112,000 |
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| Exercised (in shares) |
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(34,422) |
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| Outstanding, ending balance (in shares) |
488,267 |
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488,267 |
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| Exercisable (in shares) |
254,937 |
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254,937 |
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| Options weighted average exercise price [Roll Forward] |
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| Outstanding, beginning balance (in dollars per share) |
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$ 18.41 |
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| Granted (in dollars per share) |
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$ 18.23 |
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| Exercised (in dollars per share) |
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$ 14.35 |
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| Outstanding, ending balance (in dollars per share) |
$ 18.65 |
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$ 18.65 |
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| Exercisable (in dollars per share) |
$ 19.02 |
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$ 19.02 |
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| Options, additional disclosures [Abstract] |
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| Outstanding, weighted average remaining contractual term |
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4 years 2 months 12 days |
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4 years |
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| Outstanding, aggregate intrinsic value |
$ 189,000 |
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$ 189,000 |
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$ 219,000 |
| Exercisable, weighted average remaining contractual term |
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3 years |
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| Exercisable, aggregate intrinsic value |
120,000 |
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120,000 |
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| Weighted average grant date fair value of options (in dollars per share) |
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$ 5.30 |
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$ 5.98 |
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| Net cash proceeds from the exercise of stock options |
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0 |
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0 |
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| Intrinsic value |
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141,964 |
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284,259 |
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| Total unrecognized compensation expense |
$ 763,667 |
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$ 763,667 |
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| Weighted average period for recognition |
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1 year 9 months 7 days |
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Stock Options [Member] | Minimum [Member]
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| Range of Exercise Prices [Abstract] |
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| Outstanding, beginning of period |
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$ 10.20 |
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| Granted |
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$ 16.88 |
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| Exercised |
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$ 10.20 |
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| Outstanding, end of period |
$ 10.75 |
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$ 10.75 |
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| Share based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options Per Share Price |
$ 10.75 |
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$ 10.75 |
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Stock Options [Member] | Maximum [Member]
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| Range of Exercise Prices [Abstract] |
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| Outstanding, beginning of period |
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$ 21.85 |
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| Granted |
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$ 18.39 |
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| Exercised |
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$ 17.61 |
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| Outstanding, end of period |
$ 21.85 |
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$ 21.85 |
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| Share based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options Per Share Price |
$ 21.85 |
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$ 21.85 |
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