STOCKHOLDERS' EQUITY (Div and Treas) (Details) - USD ($) $ / shares in Units, $ in Thousands		2 Months Ended	3 Months Ended								12 Months Ended
	Jan. 27, 2016	Feb. 22, 2016	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	Oct. 31, 2015
Dividends on Common Stock
Dividends declared (in dollars per share)	$ 0.08		$ 0.08	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.03	$ 0.03	$ 0.03	$ 0.26	$ 0.15	$ 0.12
Dividend Amount			$ 2,097	$ 1,578	$ 1,578	$ 1,584	$ 1,644	$ 823	$ 816	$ 819	$ 6,837	$ 4,102	$ 3,233
Treasury Stock
Aggregate cost of shares repurchased during the period											$ 12,765
Treasury stock (in shares)			2,080,187				1,677,932				2,080,187	1,677,932
Stock Repurchase Program
Treasury Stock
Amount of stock repurchases authorized														$ 50,000
Number of shares repurchased during the period											402,255
Aggregate cost of shares repurchased during the period											$ 12,800
Amount available for repurchase under the current buyback program			$ 47,200								$ 47,200
Subsequent Event | Stock Repurchase Program
Treasury Stock
Number of shares repurchased during the period		104,002
Aggregate cost of shares repurchased during the period		$ 2,000
Amount available for repurchase under the current buyback program		$ 45,200