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Share based Compensation Arrangement By Share based Payment Award Earnout Shares Vested Number Of Shares

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Proposed Business Combination and Related Transactions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Dec. 21, 2020	Mar. 31, 2021	Dec. 21, 2021
Business Acquisition [Line Items]
Purchase price		$ 9.20
Prior To Change Of Control [Member]
Business Acquisition [Line Items]
Earnout shares vested	400,000
Prior To Change Of Control One [Member]
Business Acquisition [Line Items]
Earnout shares vested	1,600,000
Volume Weighted Average Share Price Exceeds Eleven Point Five [Member]
Business Acquisition [Line Items]
Earnout shares	400,000
Volume Weighted Average Share price exceeds Twelve Point Five Zero [Member]
Business Acquisition [Line Items]
Earnout shares	1,600,000
Minimum [Member]
Business Acquisition [Line Items]
Percentage of total voting power of investor	5.00%
Maximum [Member]
Business Acquisition [Line Items]
Redemption of shares	40.00%
Midco [Member]
Business Acquisition [Line Items]
Shares acquired	5,075,000
Proceeds from sale of common stock	$ 250.0
Selling price			$ 10.00
Midco [Member] \| Consideration With No Assumption Of Redemption Value [Member]
Business Acquisition [Line Items]
Redemption value of equity	0.0
Consideration in cash	490.0
Consideration in equity interests	70.0
Midco [Member] \| Consideration With Assumption Of Redemption Value [Member]
Business Acquisition [Line Items]
Redemption value of equity	138.8
Consideration in cash	351.2
Consideration in equity interests	$ 83.8
Janus Parent Inc [Member] \| PIPE Investors [Member]
Business Acquisition [Line Items]
Purchase of common shares	25,000,000	25,000,000
Purchase price	$ 10.00	$ 10.00
Janus Parent Inc [Member] \| Officers And Directors [Member]
Business Acquisition [Line Items]
Purchase of common shares	2,400,000	2,400,000