Subsequent Events - Additional Information (Details) $ in Millions				3 Months Ended
	Oct. 31, 2021 USD ($) shares	Oct. 05, 2021 Tranche shares	Oct. 01, 2021 shares	Mar. 31, 2020 shares
Common Stock [Member]
Subsequent Event [Line Items]
Shares sold				263,725
Subsequent Events [Member] | IronNet [Member]
Subsequent Event [Line Items]
Number of tranches, common shares received upon exercise of warrants | Tranche		2
Deferred tax assets related to net operating loss and tax credit carryforwards | $	$ 2.5
Subsequent Events [Member] | IronNet [Member] | Private Warrants [Member]
Subsequent Event [Line Items]
Warrants exercised			2,065,000
Subsequent Events [Member] | IronNet [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Shares sold	1,405,315		220,000
Common shares received upon exercise of warrants		1,271,406
Gross pre-tax proceeds from shares sold | $	$ 16.9
Unrestricted shares held	138,620
Restricted shares held	1,250,000