Business Combinations - Narrative (Detail) - USD ($)				1 Months Ended		9 Months Ended	12 Months Ended
	Apr. 01, 2021	Dec. 31, 2020	Nov. 02, 2020	Apr. 30, 2021	Jan. 31, 2021	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Acquisition related costs							$ 781,000	$ 1,579,000	$ 0
Business acquisition, pro forma revenue								235,700,000	195,400,000
Business acquisition, pro forma net income (loss)								8,600,000	$ (17,200,000)
Minimum
Business Acquisition [Line Items]
Useful life							5 years
Maximum
Business Acquisition [Line Items]
Useful life							10 years
Saylent Technologies, Inc
Business Acquisition [Line Items]
Cash consideration, gross	$ 38,500,000
Acquisition related costs	800,000
Purchase accounting adjustments, goodwill						$ 200,000	$ 249,000	0
Purchase accounting adjustments, deferred tax liability						$ 200,000
Goodwill considered deductible for income tax purposes	$ 0
TazWorks, LLC
Business Acquisition [Line Items]
Cash consideration, gross		$ 5,000,000			$ 84,800,000
Acquisition related costs		800,000
Purchase accounting adjustments, goodwill							$ (47,000)	0
Goodwill considered deductible for income tax purposes		46,400,000						46,400,000
Business combination, consideration transferred		$ 89,800,000
Business combination, adjustment consideration transferred				$ 200,000
Teledata Communications, Inc.
Business Acquisition [Line Items]
Cash consideration, gross			$ 105,800,000
Acquisition related costs			800,000
Goodwill considered deductible for income tax purposes			55,200,000
Consideration transferred as PPP loan deposit			$ 2,100,000
Revenue since acquisition date								$ 3,600,000