Income Taxes - Components of Deferred Income Tax (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current deferred income tax assets (liabilities), net:
Bad debt	$ 0	$ 5,364,000
Warranty	0	7,092,000
State and local taxes	0	2,240,000
Other accrued expenses and reserves	0	1,852,000
Inventory	0	(3,096,000)
Compensation and benefits	0	2,209,000
Product liability	0	594,000
Valuation allowance	0	(22,084,000)
Other, net	0	(732,000)
Deferred Tax Liabilities, Net, Current	0	(369,000)
Long-term deferred income tax assets (liabilities), net:
Bad debt	3,670,000	0
Warranty	5,357,000	0
Other accrued expenses and reserves	4,355,000	0
Inventory	2,395,000	0
Goodwill and intangibles	(25,008,000)	(21,915,000)
Convertible debt	(421,000)	(700,000)
Fixed assets	(8,207,000)	(10,431,000)
Compensation and benefits	7,136,000	14,630,000
Loss and credit carryforwards	102,194,000	65,123,000
Product liability	4,107,000	4,919,000
State and local taxes	19,932,000	17,745,000
Valuation allowance	(151,972,000)	(111,828,000)
Other, net	5,255,000	12,647,000
Deferred tax assets (Liabilities), net, noncurrent	(31,207,000)	(29,810,000)
Net Deferred Income Taxes	$ 31,207,000	$ 30,179,000