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

6 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	Estimated useful lives			December 31,		June 30,
	(years)			2014		2015
Building		15		$	2,553	$	2,661
Computer and office equipment		3			19,161		18,879
Furniture and fixtures	3	to	5		4,274		4,782
Leasehold improvements	Lease term				4,836		5,807
					30,824		32,129
Less accumulated depreciation and amortization					15,098		14,644
Totals				$	15,726	$	17,485