v3.21.1

Acquisition of Simply Mac - Additional Information (Detail) - USD ($)				1 Months Ended	3 Months Ended	12 Months Ended
	Sep. 25, 2019	Sep. 20, 2019	May 09, 2019	Feb. 01, 2020	Dec. 31, 2019	Jan. 30, 2021	Dec. 31, 2019
Business Acquisition [Line Items]
Net sales				$ 5,285,000		$ 68,024,000	$ 30,385,000
Operating loss				$ (850,000)		(8,845,000)	(13,249,000)
Simply Mac, Inc. [Member]
Business Acquisition [Line Items]
Net sales					$ 21,269,000
Operating loss					$ 1,665,000
Business acquisition, unaudited pro forma net sales							71,173,000
Business acquisition, unaudited pro forma net loss							$ 24,289,000
Simply Mac, Inc. [Member] | Stock Purchase Agreement [Member]
Business Acquisition [Line Items]
Stock purchase agreement date			May 09, 2019
Stock purchase agreement amended date		Sep. 20, 2019
Aggregate consideration for stock purchase	$ 12,554,000
Cash consideration	4,696,000
Value of implied goodwill deductible for tax purposes	$ 411,000
Payments on consideration including working capital adjustment						5,157,000
Working capital adjustment						$ 461,000
Simply Mac, Inc. [Member] | Stock Purchase Agreement [Member] | 12% Secured Promissory Note [Member]
Business Acquisition [Line Items]
Notes payable, interest rate	12.00%
Purchase consideration as promissory note	$ 7,858,000

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