Note 14 - Income Taxes (Details) - Components of Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Deferred tax assets:
Federal net operating loss carryforwards	$ 51,956	$ 72,700
State net operating loss carryforwards	40,485	38,082
Alternative minimum tax and other tax credit carryforwards	25,539	24,196
Stock-based compensation expense	26,753	26,651
Warranty, litigation and other reserves	12,527	15,543
Receivables from related party	11,915	12,132
Accrued compensation	4,957	11,136
Asset impairment charges	4,728	5,496
Inventory, additional costs capitalized for tax purposes	3,183	1,700
Other, net	4,030	3,446
Total deferred tax assets	186,073	211,082
Valuation allowance	(14,988)	(14,669)
Total deferred tax assets, net of valuation allowance	171,085	196,413
Deferred tax liabilities:
Property, equipment and other assets	5,161	5,512
Discount on notes receivable	4,204	4,204
Deferred revenue	4,148	3,985
Unrealized gain on marketable securities	1,485	4,915
Other, net	1,545	1,535
Total deferred tax liabilities	16,543	20,151
Net deferred tax asset	$ 154,542	$ 176,262