SIGNIFCANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Cost-method Investments [Line Items]
Interest in Diluted Shares of Cost Method Investment	7.70%
Cost Method Investments, Original Cost	$ 1,500
Debt Issuance Costs, Net	1,240	$ 1,564
Cost Method Investments	$ 500
Interest in Investment	10.00%
Interest Paid	$ 3,256	2,937	$ 3,420
Advertising Expense	30,500	33,200	29,900
Income Taxes Paid	9,096	6,853	16,513
Capital Expenditures Incurred but Not yet Paid	201	431	284
Stock Repurchase Program, Not Settled, Amount	$ 0	$ 863	$ 0