Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Tax amortization benefit contingency	$ 11,820	$ 11,820
Additional consideration due seller	928	693
Dow settlement liability		10,000
Accrued compensation and benefits	8,750	8,932
Accrued rebates payable	5,696	5,027
Insurance premium financing payable	1	639
Severance	154	113
Deferred revenue	1,205	100
Other notes payable	1,281	5,056
Accrued taxes	9,620	7,848
Accrued interest	4,499	6,321
Other	6,092	9,260
Accrued and other current liabilities	$ 50,046	$ 65,809