Note 4 - Property, Equipment and Leasehold Improvements (Tables)

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	Estimated useful lives			December 31,
	(years)			2012		2013
Building		15		$	600	$	600
Computer and office equipment		3			15,557		19,551
Furniture and fixtures	3	to	5		2,586		3,364
Leasehold improvements	Lease term				1,877		3,251
					20,620		26,766
Less accumulated depreciation and amortization					10,287		15,816
Totals				$	10,333	$	10,950