Accrued Expenses And Other Current Liabilities (Schedule Of Accrued Expenses And Other Current Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Payables and Accruals [Abstract]
Employee compensation and benefits	$ 31,870	$ 21,273	$ 26,219
Current portion of accrued warranty	16,569	14,516	14,070
Sales rebates	7,508	5,515	5,457
Taxes payable	1,729	756	703
Other	17,885	15,591	15,550
Accrued expenses and other current liabilities	$ 75,561	$ 57,651	$ 61,999