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STOCK-BASED COMPENSATION - Summary of company's Stock option plan (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2013
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Dec. 31, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |
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| Shares, Outstanding at the beginning of the period |
102,100 |
102,100 |
| Shares, Granted |
17,700 |
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| Shares, Exercised |
(97,100) |
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| Shares, Outstanding at the end of the period |
22,700 |
102,100 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Rollforward] |
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| Outstanding at the beginning of the period, Weighted Average Exercise Price (in Dollars per share) |
$ 4.99 |
$ 4.99 |
| Weighted Average Exercise Price, Granted (in Dollars per share) |
$ 18.35 |
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| Weighted Average Exercise Price, Exercises (in Dollars per share) |
$ 5.00 |
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| Outstanding at the beginning of the period, Weighted Average Exercise Price (in Dollars per share) |
$ 15.37 |
$ 4.99 |
| Options exercisable at period-end |
22,700 |
102,100 |
| Weighted average fair value of options granted during the period |
17,700 |
102,100 |
| Aggregate intrinsic value of outstanding and exercisable options at the end of the period |
22,700 |
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| Options exercisable at period-end (in Dollars per share) |
$ 15.37 |
$ 4.99 |
| Weighted average fair value of options granted during the period (in Dollars per share) |
$ 18.35 |
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| Aggregate intrinsic value of outstanding and exercisable options at the end of the period (in dollars per share) |
$ 2.63 |
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