Annual report pursuant to Section 13 and 15(d)

Business Acquisitions (Pro Forma Data) (Details)

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Business Acquisitions (Pro Forma Data) (Details) - PIEtech Acquisition - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Business Acquisition [Line Items]    
Revenues $ 919,291 $ 869,247
Net loss $ (16,860) $ (1,367)
Net loss per share:    
Basic (in dollars per share) $ (0.32) $ (0.03)
Diluted (in dollars per share) $ (0.32) $ (0.03)