Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Payroll and related liabilities	$ 39,781	$ 37,396
Current portion of contingent liabilities	28,621	23,760
Advances from employees	286	540
Accrued rebates payable	9,202	6,789
Other accrued expenses	27,294	27,688
Accrued Liabilities, Current, Total	$ 105,184	$ 96,173