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12. Restructuring (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Restructuring Details          
Accrued restructuring costs $ 251   $ 251   $ 0
Restructuring charges $ (4) $ 0 1,193 $ 0  
Restructuring cash     (288)    
Restructuring noncash     $ (653)