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Property and Equipment (Tables)
9 Months Ended
Sep. 30, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
Property and equipment consist of the following (in thousands):

September 30,
2012

December 31,
2011
Equipment
$
32,373


$
25,101

Furniture and fixtures
2,262


1,811

Leasehold improvements
4,234


3,692

Purchased software
21,500


20,641

Capital in process
6,608


2,283


66,977


53,528

Accumulated depreciation and amortization
(34,792
)

(36,222
)
Property and equipment, net
$
32,185


$
17,306