Acquisitions - Summary of Unaudited Pro Forma Results of Operations (Details) - NC4 Inc. and NC4 Public Sector LLC - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Revenue from the acquisition date	$ 2,040
Net loss from the acquisition date	$ (1,465)
Revenue, pro forma		$ 54,352	$ 43,037	$ 154,719	$ 116,838
Net loss, pro forma		$ (13,387)	$ (11,543)	$ (45,875)	$ (48,652)
Basic and diluted loss per share pro forma		$ (0.40)	$ (0.39)	$ (1.38)	$ (1.66)

Business acquisition pro forma earnings (loss) per share basic and diluted

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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