Note 9 - Commitments and Contingencies (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$ 3,100,000	$ 2,400,000	$ 9,200,000	$ 7,100,000
Defined Contribution Plan, Cost Recognized	$ 144,000	$ 149,000	$ 421,000	$ 380,000