COMMON STOCK REPURCHASES AND CASH DIVIDENDS Common Stock Repurchases (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jul. 25, 2017
Class of Stock [Line Items]
Payments for Repurchase of Common Stock	$ 0	$ 6,435
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 23,600
Subsequent Event [Member] | Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount			$ 30,000