COMPUTATION OF EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Common Stock	Mar. 31, 2013 Common Stock	Mar. 31, 2014 Series A 3% Redeemable Convertible Preferred Stock	Mar. 31, 2013 Series A 3% Redeemable Convertible Preferred Stock	Feb. 11, 2014 Series A 3% Redeemable Convertible Preferred Stock
Information related to EPS computation
Number of shares converted to common stock								5,805,921
Series A 3% Redeemable Convertible Preferred Stock, dividend rate (as a percent)	3.00%	3.00%	3.00%			3.00%	3.00%
Net income allocated to common stockholders (in dollars)	$ 3,627	$ 10,266		$ 3,349	$ 8,513	$ 278	$ 1,753
Basic:
Weighted-average common shares outstanding	31,837,000	28,055,000
Earnings per share allocated to common stockholders	$ 0.11	$ 0.30
Diluted:
Weighted-average shares outstanding used in basic calculation	31,837,000	28,055,000
Dilutive effect of options	400,000	308,000
Dilutive effect of unvested restricted stock	417,000	422,000
Weighted-average common stock and common stock equivalents	32,654,000	28,785,000
Earnings per share allocated to common stockholders	$ 0.10	$ 0.30
Stock issuable upon conversion of the Series A Preferred Stock						0	5,806,000
Stock awards excluded from calculation as their effect would be anti-dilutive						27,000	834,000