Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment consist of the following (in thousands):

	March 31, 2014			December 31, 2013
Equipment	$	40,682		$	40,180
Furniture and fixtures	5,296			5,260
Leasehold improvements	7,451			7,394
Purchased software	21,299			20,199
Construction in process	3,355			2,649
	78,083			75,682
Accumulated depreciation and amortization	(42,905		)	(40,428		)
Property and equipment, net	$	35,178		$	35,254