Note 14 - Income Taxes (Details) - Components of Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Federal net operating loss carryforwards	$ 72,915	$ 129,695
State net operating loss carryforwards	40,227	49,551
Alternative minimum tax and other tax credit carryforwards	24,196	10,988
Stock-based compensation expense	26,651	29,196
Warranty, litigation and other reserves	15,543	14,556
Deferred compensation retirement plans		11,252
Accrued compensation	11,136
Asset impairment charges	5,889	14,080
Inventory, additional costs capitalized for tax purposes	7,064	3,930
Other, net	3,446	2,063
Total deferred tax assets	207,067	265,311
Valuation allowance	(8,201)	(248,306)
Total deferred tax assets, net of valuation allowance	198,866	17,005
Deferred tax liabilities:
Property, equipment and other assets	5,512	5,753
Discount on notes receivable	4,204	4,204
Deferred revenue	3,985	3,796
Unrealized gain on marketable securities	7,368	1,863
Other, net	1,535	1,389
Total deferred tax liabilities	22,604	17,005
Net deferred tax asset	$ 176,262