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Equity Method Investments (Details) ¥ in Thousands								3 Months Ended		9 Months Ended
	Oct. 29, 2021 USD ($)	Oct. 29, 2021 JPY (¥)	Aug. 13, 2021 USD ($)	Aug. 13, 2021 JPY (¥)	Jun. 07, 2021 USD ($)	Jun. 07, 2021 JPY (¥)	May 29, 2021 USD ($)	Jan. 29, 2022 USD ($)	Jan. 30, 2021 USD ($)	Jan. 29, 2022 USD ($)	Jan. 30, 2021 USD ($)	Mar. 01, 2022 USD ($)	Mar. 01, 2022 JPY (¥)	May 29, 2021 JPY (¥)	Apr. 30, 2021 USD ($)	Dec. 04, 2019 USD ($)	Dec. 04, 2019 JPY (¥)	May 10, 2019 USD ($)	May 10, 2019 JPY (¥)	Feb. 09, 2019 USD ($)	Feb. 09, 2019 JPY (¥)	Feb. 08, 2019	Jan. 29, 2019 USD ($)	Jan. 29, 2019 JPY (¥)	May 09, 2018	Apr. 17, 2018 USD ($)	Apr. 17, 2018 JPY (¥)	Dec. 27, 2017 USD ($)	Dec. 27, 2017 JPY (¥)
Equity Method Investments
Equity method investment income (loss), net of tax								$ 171,000	$ (81,000)	$ 163,000	$ (10,891,000)
Carrying value of investment								12,388,000		12,388,000					$ 7,168,000
HAPSMobile
Equity Method Investments
Ownership percentage																7.00%	7.00%	5.00%	5.00%	10.00%	10.00%	5.00%	5.00%	5.00%	10.00%			5.00%	5.00%
Payments for purchase of interest																$ 4,982,000	¥ 540,050	$ 4,569,000	¥ 500,000	$ 5,671,000	¥ 632,800		$ 1,926,000	¥ 209,500		$ 1,407,000	¥ 150,000	$ 1,860,000	¥ 210,000
HAPSMobile | Equity method investment loss, net of tax
Equity Method Investments
Amount of loss from impairment of investment											8,363,000
Equity method investment income (loss), net of tax									$ 0		$ (10,810,000)
HAPSMobile | Equity method investment activity, net of tax
Equity Method Investments
Equity method investment income (loss), net of tax								(200,000)		(2,044,000)
HAPSMobile | Other assets, long term
Equity Method Investments
Carrying value of investment								$ 2,435,000		$ 2,435,000					$ 0
HAPSMobile | SoftBank
Equity Method Investments
Ownership percentage								93.00%		93.00%
HAPSMobile | Aerovironment
Equity Method Investments
Ownership percentage								7.00%		7.00%
MDDA
Equity Method Investments
Term of MDDA							5 years
MDDA | SoftBank
Equity Method Investments
Maximum value under MDDA							$ 51,200,000
MDDA | HAPSMobile
Equity Method Investments
Amount of loan repayment												$ 4,345,000	¥ 503,832
Execution of MDDA | ¥														¥ 500,000
Amount funded	$ 1,674,000	¥ 190,000	$ 1,638,000	¥ 180,000	$ 1,195,000	¥ 130,000

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