Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accrued Liabilities, Current [Abstract]
Compensation	$ 15,673	$ 17,572
Current portion of cash-settled share-based liabilities	14,817	14,777
Interest and taxes	3,593	9,231
Customer rebates	11,003	10,300
Insurance	8,367	7,789
Current operating lease liability	8,309
Unearned revenue	17,311	12,028
Other	19,390	15,377
Total accrued expenses	$ 98,463	$ 87,074