STOCK PLANS AND STOCK BASED COMPENSATION - Restricted Stock Awards (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015
Stock-based compensation
Closing price of common stock (in dollars per share)	$ 19.89	$ 19.89	$ 19.89
Shares of common stock granted	358,000	1,341,000	14,084,000
Shares
Granted (in shares)	358,000	1,341,000	14,084,000
Additional disclosures
Compensation expense	$ 89			$ 90
Restricted stock
Stock-based compensation
Shares of common stock granted	24,152
Shares
Nonvested at the beginning of the period (in shares)	101,631
Granted (in shares)	24,152
Vested (in shares)	1,000
Nonvested at the end of the period (in shares)	124,783	101,631
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 16.57
Granted (in dollars per share)	21.47
Vested (in dollars per share)	13.67
Nonvested at the end of the period (in dollars per share)	$ 17.54	$ 16.57
Restricted stock | 2007 Plan
Additional disclosures
Unrecognized compensation costs	$ 908
Compensation expense	$ 149			$ 152
Weighted-average period of expected recognition of the cost	1 year 10 months 24 days
Restricted stock | Executive officers and other employees [Member]
Stock-based compensation
Vesting percentage of stock awards on third anniversary of grant date	100.00%
Shares of common stock granted	24,152			11,171
Shares
Granted (in shares)	24,152			11,171
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 21.47			$ 19.57
Performance units | Executive officers
Stock-based compensation
Shares of common stock granted	16,152			11,171
Shares
Granted (in shares)	16,152			11,171
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 21.41			$ 19.57
Additional disclosures
Unrecognized compensation costs	$ 557
Compensation expense	$ 26			$ 0