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STOCK-BASED COMPENSATION - 2015 EIP Restricted Stock Units (Details) - 2015 EIP Plan - Restricted Stock Units - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 15, 2018 | Feb. 27, 2018 | May 17, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Stock Awards |  |  |  |  |  |  |  |
Number of common shares outstanding in respect of RSUs |  |  |  | 118,838 |  | 118,838 |  | 118,838
Number of Shares |  |  |  |  |  |  |  |
Balance at the beginning of the period (in shares) |  |  |  |  |  | 220,129 |  |
Granted (in shares) |  | 37,346 |  |  |  | 51,704 |  |
Vested (in shares) |  |  |  |  |  | (25,197) |  |
Balance at the end of the period (in shares) |  |  |  | 246,636 |  | 246,636 |  |
Weighted Average Fair Value |  |  |  |  |  |  |  |
Balance at the beginning of the period (in dollars per share) |  |  |  |  |  | $ 11.01 |  |
Granted (in dollars per share) |  |  |  |  |  | 14.84 |  |
Vested (in dollars per share) |  |  |  |  |  | 10.12 |  |
Balance at the end of the period (in dollars per share) |  |  |  | $ 11.91 |  | $ 11.91 |  |
Weighted-average remaining contractual life |  |  |  |  |  | 1 year 5 months 23 days |  |
Additional disclosures |  |  |  |  |  |  |  |
Total fair value of shares vested |  |  |  |  |  | $ 450 | $ 675 |
Unrecognized compensation cost related to nonvested stock awards |  |  |  |  |  |  |  |
Unrecognized compensation cost |  |  |  | $ 1,376 |  | $ 1,376 |  |
Weighted-average period for recognition of unrecognized compensation cost |  |  |  |  |  | 1 year 5 months 23 days |  |
General and Administrative Expense |  |  |  |  |  |  |  |
Additional disclosures |  |  |  |  |  |  |  |
Recognized nonvested stock amortization expense |  |  |  | $ 421 | $ 833 | $ 788 | $ 992 |
Vested RSUs |  |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |  |
Number of shares vested |  |  |  | 196,769 |  | 196,769 |  |
Weighted Average Fair Value |  |  |  |  |  |  |  |
Vested (in dollars per share) |  |  |  |  |  | $ 11.23 |  |
Directors |  |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |  |
Granted (in shares) | 14,268 |  | 25,197 |  |  |  |  |
Other Individuals |  |  |  |  |  |  |  |
Stock Awards |  |  |  |  |  |  |  |
Vesting period of awards |  |  |  |  |  | 3 years |  |
Eugene Davis |  |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |  |
Number of common shares issued in respect of RSUs |  |  | 18,234 |  |  |  |  |

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