Income Taxes Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred Tax Assets, Gross [Abstract]
Warranty, insurance and other accruals	$ 14,460	$ 13,155
Inventory	9,528	11,049
State taxes	211	175
Net operating loss carryforward	42,556	69,946
Deferred charges	649	1,711
Total deferred tax assets	67,404	96,036
Deferred Tax Liabilities, Gross [Abstract]
Federal effect of state deferred taxes	5,519	0
Depreciation	0	1,191
Prepaid expenses	0	433
Total deferred tax liabilities	5,519	1,624
Deferred Tax Assets, Net of Valuation Allowance	$ 61,885	$ 94,412