Income Taxes - Components of Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets
Federal benefit of state tax liabilities	$ 5,278	$ 7,809
Reserves, accruals and other	15,026	11,005
Inventory obsolescence	550	428
Capitalized research and development	5,086	7,491
Amortization of intangibles other than goodwill	1,569	2,809
Net operating loss carryforwards	47,095	55,938
Depreciation	56	0
Deferred tax assets	74,660	85,480
Deferred Tax Liabilities
Reserves, accruals and other	(881)	(1,078)
Customer relationships	(707)	(986)
Depreciation	0	(727)
Deferred tax liability	(1,588)	(2,791)
Less: valuation allowance	(1,238)	(1,240)
Net deferred tax liabilities	71,834	81,449
Recorded in the accompanying consolidated balance sheets as:
Noncurrent deferred tax assets, net	$ 71,834	$ 81,449