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

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	Estimated useful lives				December 31,
	(years)				2013		2014
Building			15		$	600	$	2,553
Computer and office equipment			3			19,551		19,160
Furniture and fixtures		3	to	5		3,364		4,274
Leasehold improvements			Lease term			3,251		4,836
						26,766		30,824
Less accumulated depreciation and amortization						15,816		15,098
Totals					$	10,950	$	15,726