Note 12 - Accounting for Uncertainty in Income Taxes (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012
Unrecognized Tax Benefits	$ 14,140,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	2,447,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	4,309,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	925,000
Deferred Tax Assets [Member]
Unrecognized Tax Benefits	9,683,000
Permanent Differences [Member]
Unrecognized Tax Benefits	4,457,000
Permanent Differences [Member]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,873,000
Temorary Difference [Member]
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	1,999,000
Permanent Differences [Member]
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	$ 2,310,000