STOCK-BASED COMPENSATION - Restricted Stock (Details) - USD ($) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Restricted Stock | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Compensation expense | $ 0.5 | $ 0.4 | $ 1.6 |
Unrecognized compensation expense | 0.5 | ||
Grant date fair value of awards vested | 0.9 | 0.2 | 3.5 |
Fair value of awards vested | $ 0.2 | $ 0.5 | $ 2.0 |
2008 Plan | Performance Shares | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Vesting period | 1 year | ||
2008 Plan | Performance Shares | Minimum | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Vesting period | 1 year | ||
Key Employees | 2008 Plan | Restricted Stock | Minimum | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Vesting period | 3 years | ||
Director | 2008 Plan | Restricted Stock | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Vesting period | 1 year |