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Summary of Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense $ 4,680 $ 2,272 $ 8,283 $ 6,731
Cost of Service Revenue [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 179 27 239 90
Engineering, Design and Development [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 584 158 902 439
Sales and Marketing [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 413 386 938 1,189
General and Administrative [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 3,301 1,641 5,866 4,802
Discontinued Operations Held for Sale [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 8,521 1,794 12,077 5,980
Discontinued Operations Held for Sale [Member] | Cost of Service Revenue [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 2,259 367 3,066 1,106
Discontinued Operations Held for Sale [Member] | Engineering, Design and Development [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 2,712 559 3,735 1,832
Discontinued Operations Held for Sale [Member] | Sales and Marketing [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense 2,141 463 2,957 1,597
Discontinued Operations Held for Sale [Member] | General and Administrative [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Total stock-based compensation expense $ 1,409 $ 405 $ 2,319 $ 1,445