CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	$ 2,945	$ 2,888	$ 2,719
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense	1,435	1,718	1,035
Valuation Allowances and Reserves, Deductions	(1,199)	(1,661)	(866)
Valuation Allowances and Reserves, Balance	3,181	2,945	2,888
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation Allowances and Reserves, Balance	1,746	1,793	0
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense	(713)	(47)	1,793
Valuation Allowances and Reserves, Deductions	0	0	0
Valuation Allowances and Reserves, Balance	$ 1,033	$ 1,746	$ 1,793