Accrued Expenses And Other Current Liabilities (Accrued Expenses And Other Current Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts Payable and Accrued Liabilities, Current [Abstract]
Customer deposits and obligations	$ 24,006	$ 25,251
Commissions payable and sales incentive	2,472	3,517
Penalty accruals	1,847	1,957
Warranty reserve	1,642	2,980
Professional fees	2,318	2,775
Taxes other than income tax	3,551	2,913
Other Contract Liabilities	9,153	14,646
Income tax payable	5,521	3,529
Other	43,659	34,928
Accrued expenses and other current liabilities, Total	$ 94,169	$ 92,496