Note 4 - Property, Equipment and Leasehold Improvements

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment Disclosure [Text Block]

(4)           Property, Equipment and Leasehold Improvements

Property, equipment and leasehold improvements at December 31, 2010 and 2011, consist of the following (in thousands):

	Estimated		December 31,
	useful
	lives		2010		2011
Building	15 years	$	—	$	600
Computer and office equipment	3 years		5,738		10,742
Furniture and fixtures	3 – 5 years		1,379		1,682
Leasehold improvements	Lease term		295		627
			7,412		13,651
Less accumulated depreciation			2,542		4,733
Total		$	4,870	$	8,918

Depreciation expense was $656,000, $1.7 million and $4.0 million for the years ended December 31, 2009, 2010 and 2011, respectively.