Business Combinations - Additional Information (Detail) - USD ($)						1 Months Ended	12 Months Ended
	Feb. 14, 2019	Jan. 25, 2019	Nov. 01, 2018	May 09, 2018	Feb. 14, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Decrease in accounts receivable								$ (68,000)	$ (2,786,000)
Goodwill								$ 9,286,000
3VR
Business Acquisition [Line Items]
Date of acquisition completed					Feb. 14, 2018			Feb. 14, 2018
Business combination, aggregate consideration					$ 6,200,000
Business combination, net of cash acquired					1,600,000
Business combination, issuance of notes					$ 2,000,000
Business combination, issuance of common stock, shares					609,830
Business combination, issuance of common stock					$ 2,300,000
Business combination, issuance of common stock shares held back					294,927
Reduction in purchase consideration				$ 660,000
Reduction in goodwill				$ 660,000
Business combination, cancellation of common stock shares held back				181,319
Product shipments have to be achieved to obligate earn-out consideration					$ 24,100,000
Amount of earn-out consideration of payable in shares of common stock					3,500,000
Potential maximum earn-out value					7,000,000
Amount of shipments should exceed to obligate potential maximum earn-out value					48,200,000
Decrease in accounts receivable						$ 561,000
Goodwill					5,796,000
3VR | ASC 805
Business Acquisition [Line Items]
Acquisition and transitional costs								$ 548,000	$ 212,000
3VR | Notes Payable
Business Acquisition [Line Items]
Business combination, issuance of notes					2,000,000
3VR | Scenario, Forecast
Business Acquisition [Line Items]
Percentage of contingent consideration obligated to pay							35.00%
Amount of contingent consideration obligated to pay for each subject adjustments							$ 25,000,000
3VR | Subsequent Event
Business Acquisition [Line Items]
Business combination, issuance of common stock value held back		$ 300,000
Business combination, issuance of common stock shares holdback		93,406
3VR | Subsequent Event | Notes Payable
Business Acquisition [Line Items]
Debt instrument payment, principal and interest	$ 2,060,000
3VR | Maximum
Business Acquisition [Line Items]
Business combination, issuance of common stock value held back					$ 1,000,000
Thursby Software Systems
Business Acquisition [Line Items]
Date of acquisition completed			Nov. 01, 2018
Business combination, aggregate consideration			$ 3,100,000
Business combination, net of cash acquired			$ 600,000
Business combination, issuance of common stock, shares			426,621
Business combination, issuance of common stock			$ 2,500,000
Goodwill			$ 3,490,000
Business combination, issuance of common stock shares held back			85,324
Product revenue to be achieved to obligate earn-out consideration			$ 11,000,000
Amount of additional earn-out consideration of payable in shares of common stock			2,500,000
Amount of maximum earn-out consideration of payable for all periods in shares of common stock			7,500,000
Thursby Software Systems | ASC 805
Business Acquisition [Line Items]
Acquisition and transitional costs								$ 208,000
Thursby Software Systems | Maximum
Business Acquisition [Line Items]
Business combination, issuance of common stock value held back			500,000
Product revenue to be achieved to obligate earn-out consideration			15,000,000
Amount of earn-out consideration of payable in shares of common stock			7,500,000
Product revenue to be achieved to obligate additional earn-out consideration			15,000,000
Thursby Software Systems | Minimum
Business Acquisition [Line Items]
Product revenue to be achieved to obligate earn-out consideration			8,000,000
Product revenue to be achieved to obligate additional earn-out consideration			$ 15,000,000