Note 4 - Property, Equipment and Leasehold Improvements (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Depreciation	$ 1,400,000	$ 954,000	$ 2,600,000	$ 1,700,000