Note 4 - Property, Equipment and Leasehold Improvements

12 Months Ended

Dec. 31, 2012

Property, Plant and Equipment Disclosure [Text Block]

(4)               Property, Equipment and Leasehold Improvements

Property, equipment and leasehold improvements at December 31, 2011 and 2012, consist of the following (in thousands):

	Estimated			December 31,
	useful lives (years)			2011		2012
Building		15		$	600	$	600
Computer and office equipment		3			10,742		15,557
Furniture and fixtures	3	to	5		1,682		2,586
Leasehold improvements		Lease term			627		1,877
					13,651		20,620
Less accumulated depreciation and amortization					4,733		10,287
Totals				$	8,918	$	10,333

Depreciation expense was $1.7 million, and $4.0 million and $5.5 million for the years ended December 31, 2010, 2011 and 2012, respectively.