SIGNIFICANT ACCOUNTING POLICIES - Computation and Reconciliation of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Numerator:
Income (loss) from continuing operations, net of non-controlling interest									$ (23,971)	$ 1,926	$ 6,073
Less income allocated to RSAs									0	(52)	(102)
Income (loss) from continuing operations allocated to common stock for EPS calculation									(23,971)	1,874	5,971
Income from discontinued operations					$ 718	$ 20	$ 219	$ (316)	0	641	478
Net income (loss) allocated to common stock for EPS calculation									$ (23,971)	$ 2,515	$ 6,449
Denominator:
Weighted average common shares outstanding - basic (in shares)									13,935,097	13,687,485	13,533,566
Dilutive stock-based compensation plans (in shares)									0	2,222	3,959
Weighted average common shares outstanding - diluted (in shares)									13,935,097	13,689,707	13,537,525
Income (loss) per share - Basic:
Continuing operations (in dollars per share)	$ (1.15)	$ (0.30)	$ (0.10)	$ (0.17)	$ (0.32)	$ 0.17	$ 0.15	$ 0.13	$ (1.72)	$ 0.13	$ 0.44
Discontinued operations (in dollars per share)					0.05	0.00	0.02	(0.02)	0.00	0.05	0.03
Net income (loss) (in dollars per share)	(1.15)	(0.30)	(0.10)	(0.17)	(0.27)	0.17	0.17	0.11	(1.72)	0.18	0.47
Income (loss) per share - Diluted:
Continuing operations (in dollars per share)	(1.15)	(0.30)	(0.10)	(0.17)	(0.32)	0.17	0.15	0.13	(1.72)	0.13	0.44
Discontinued operations (in dollars per share)					0.05	0.00	0.02	(0.02)	0.00	0.05	0.03
Net income (loss) (in dollars per share)	$ (1.15)	$ (0.30)	$ (0.10)	$ (0.17)	$ (0.27)	$ 0.17	$ 0.17	$ 0.11	$ (1.72)	$ 0.18	$ 0.47