v3.21.2

Stockholders' Equity - Stock-Based Compensation Narratives (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Aug. 31, 2021
Stockholders Equity [Line Items]
Stock-based compensation expense		$ 819	$ 470	$ 2,152	$ 496
Shares authorized to repurchase						15,000,000
Repurchase and retirement of common stock		$ 450		$ 450
Repurchase and retirement of common stock (in shares)		250,000		250,000
Stock Compensation Plan
Stockholders Equity [Line Items]
Options, expiry period				10 years
Options, vesting period				1 year
XpresTest 2020 Plan [Member] | RSUs
Stockholders Equity [Line Items]
Unrecognized stock-based compensation related to the awards		$ 14		$ 14
Common stock repurchased	7
Maximum | 2020 Plan [Member]
Stockholders Equity [Line Items]
Number of shares authorized			5,000,000		5,000,000
Directors, Employees And Consultants | XpresTest 2020 Plan [Member]
Stockholders Equity [Line Items]
Number of shares authorized		200		200
Percentage of shares authorized for issuance				20.00%

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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