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Business Combination - Pro Forma Information (Details) - OMT, Inc. - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jan. 07, 2016
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Business Acquisition [Line Items]          
Revenue   $ 21,997 $ 19,818 $ 51,645 $ 36,971
Net (loss) income   $ (3,443) $ 19,483 $ 3,165 $ 18,166
Basic (loss) income per share (in USD per share):   $ (0.17) $ 0.99 $ 0.15 $ 0.92
Diluted (loss) income per share (in USD per share):   $ (0.17) $ 0.92 $ 0.14 $ 0.87
Pro forma adjustment for share-based compensation expense of OMT     $ 300   $ 600
Pro forma adjustment for additional intangible amortization expense     2,100   4,200
Pro forma adjustment for platform license fee paid     $ 3,000   $ 3,000
Pro forma adjustment for license revenue recognized by OMT in the current period prior to the acquisition $ 2,500