STOCKHOLDERS' EQUITY (Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Jan. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Dividends on Common Stock
Dividends declared (in dollars per share)		$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.06	$ 0.06	$ 0.06	$ 0.32	$ 0.26	$ 0.15
Dividend Amount		$ 2,069	$ 2,074	$ 2,087	$ 2,088	$ 2,097	$ 1,578	$ 1,578	$ 1,584	$ 8,318	$ 6,837	$ 4,102
Subsequent Event
Dividends on Common Stock
Dividends declared (in dollars per share)	$ 0.08