Income Taxes Components of Deferred Income Tax (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current deferred income tax assets (liabilities), net:
Deferred Tax Assets (Liabilities), Net, Current	$ (3,256,000)	$ (2,136,000)
Long-term deferred income tax assets (liabilities), net:
Deferred Tax Assets, Net, Noncurrent	(31,587,000)	(30,123,000)
Net Deferred Income Taxes	(34,843,000)	(32,259,000)
Deferred Tax Assets and Liabilities, Current [Member]
Current deferred income tax assets (liabilities), net:
Loss carryforwards	0	107,000
Bad debt	6,931,000	7,280,000
Warranty	6,104,000	4,929,000
State and local taxes	2,787,000	2,761,000
Other accrued expenses and reserves	3,939,000	2,575,000
Inventory	1,702,000	2,331,000
Compensation and benefits	1,688,000	2,439,000
Product liability	487,000	292,000
Valuation allowance	(27,300,000)	(22,592,000)
Other, net	406,000	2,258,000
Deferred Tax Assets and Liabilities, Noncurrent [Member]
Current deferred income tax assets (liabilities), net:
State and local taxes	13,039,000	11,608,000
Compensation and benefits	22,967,000	22,388,000
Product liability	3,562,000	3,812,000
Other, net	(1,030,000)	1,837,000
Long-term deferred income tax assets (liabilities), net:
Goodwill & intangibles	(25,919,000)	(25,894,000)
Convertible debt	(659,000)	(810,000)
Fixed assets	(13,115,000)	(14,089,000)
Loss and credit carryforwards	62,738,000	48,747,000
Valuation allowance	$ (93,170,000)	$ (77,722,000)