Accrued Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Accrued Liabilities [Abstract]
Salaries and benefits	$ 23,543	$ 20,538
Incentive compensation	10,861	42,913
Accruedsupplychainrestructuring	23,800	0
Operating Lease, Liability, Current	7,359	0
Accrued Product Field Action	4,209	5,316
Third-party Inventory	0	1,089
Consigned inventory	0	1,118
Sales taxes	1,892	2,941
Restructuring accrual	7,057	1,046
Contract with Customer, Liability, Current	5,598	3,814
Accrued other taxes	2,403	3,213
Accrued Professional Fees	9,664	15,996
Legal accrual	600	1,400
Distribution Fees	3,624	3,977
Warranties and returns	914	1,124
Accrued freight	15,090	10,953
UnfavorablecontractliabilityST	4,176	0
contract settlement-ST	1,667	2,083
Accrued research and development expense	0	1,451
Other	6,315	9,848
Accrued liabilities	$ 128,772	$ 128,820	[1]

[1] December 31, 2018 balances were derived from audited consolidated financial statements.