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Goodwill (Tables)
 12 Months Ended
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in the carrying amount of goodwill
The following is a summary of the changes in the carrying amount of goodwill for the years ended December 31, 2012 and 2011 (in thousands):
 
Solutions
 
Software
 
Systems
 
Total
Balance at January 1, 2011
$
—

 
$
24,349

 
$
26,984

 
$
51,333

Goodwill acquired during the year
2,701

 
—

 
—

 
2,701

Impact of foreign currency translation adjustments
—

 
(71
)
 
—

 
(71
)
Balance at December 31, 2011
2,701

 
24,278

 
26,984

 
53,963

Purchase price adjustment
242

 
—

 
—

 
242

Impact of foreign currency translation adjustments
—

 
1,144

 
—

 
1,144

Balance at December 31, 2012
$
2,943

 
$
25,422

 
$
26,984

 
$
55,349