v3.20.4

Acquisition of Simply Mac - Additional Information (Detail) - Simply Mac, Inc. [Member] - Stock Purchase Agreement [Member] - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 25, 2019 | Sep. 20, 2019 | May 09, 2019 | Dec. 31, 2019
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
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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