Note 13 - Accounting for Uncertainty in Income Taxes (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013
Unrecognized Tax Benefits	$ 12,390,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	2,072,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	2,707,000
Unrecognized Tax Benefits, Period Increase (Decrease)	610,000
Deferred Tax Assets [Member]
Unrecognized Tax Benefits	8,686,000
Permanent Differences [Member]
Unrecognized Tax Benefits	3,704,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,708,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	$ 985,000
Temorary Difference [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	1722000.00%