STOCK OPTIONS - Activity (Details) - Stock option - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Number of Shares | |||
| Outstanding at beginning of year (in shares) | 1,190,295 | 1,355,905 | |
| Granted (in shares) | 432,000 | 45,500 | |
| Exercised (in shares) | (55,000) | (204,670) | |
| Forfeited/expired (in shares) | (67,500) | (6,440) | |
| Outstanding at end of year (in shares) | 1,499,795 | 1,190,295 | 1,355,905 |
| Exercisable at end of year (in shares) | 768,598 | 542,499 | |
| Weighted-Average Exercise Price | |||
| Outstanding at beginning of year (in dollars per share) | $ 13.15 | $ 12.21 | |
| Granted (in dollars per share) | 12.72 | 14.80 | |
| Exercised (in dollars per share) | 9.02 | 7.31 | |
| Forfeited/expired (in dollars per share) | 14.59 | 13.33 | |
| Outstanding at end of year (in dollars per share) | 13.11 | 13.15 | $ 12.21 |
| Exercisable at end of year (in dollars per share) | 12.75 | 11.82 | |
| Additional disclosure | |||
| Weighted-average fair value of options granted during the year (in dollars per share) | $ 2.98 | $ 2.72 | $ 3.05 |