COMMON STOCK REPURCHASES AND CASH DIVIDENDS Common Stock Repurchases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Common Stock Repurchases and Cash Dividends [Abstract]
Dividends declared and paid	$ 3,771	$ 3,453	$ 11,254	$ 10,501
Stock Repurchased During Period, Shares			146,000
Payments for Repurchase of Common Stock			$ 6,435	$ 53,731
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 23,600		$ 23,600