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Area of land held.

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Commitments and Contingencies - Narrative (Details) ft² in Thousands, $ in Thousands, € in Millions																	1 Months Ended			2 Months Ended	3 Months Ended			9 Months Ended
	Jun. 07, 2022 USD ($)	Jun. 07, 2022 EUR (€)	Jun. 02, 2022 USD ($)	Dec. 13, 2021 USD ($)	Aug. 27, 2021 petition	Jul. 21, 2021 petition	Mar. 31, 2021 patent	Dec. 04, 2020 patent	Nov. 17, 2020 petition	Sep. 30, 2020 patent	Jan. 10, 2020 USD ($) product patent	Nov. 06, 2019 USD ($) patent	Jul. 31, 2019 patent	Aug. 17, 2018 patent	Jul. 07, 2018 patent	Jul. 07, 2018 petition	May 31, 2022 USD ($) patent	Mar. 31, 2021 petition	Sep. 30, 2020 patent petition	Nov. 30, 2021 petition patent	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Feb. 23, 2021 petition	Jun. 30, 2022 USD ($) ft²	Jun. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 19, 2020 USD ($)
Leases
Weighted average remaining lease term of operating leases (in years)																					4 years 10 months 24 days			4 years 10 months 24 days
Weighted average discount rate of operating leases																					3.20%			3.20%
ROU assets																					$ 5,484			$ 5,484		$ 7,056
ROU liabilities																					6,678			6,678		8,500
Lease liabilities, current portion																					1,902			1,902		1,943
Lease liabilities, non-current portion																					4,776			4,776		$ 6,588
Operating lease costs																					$ 600	$ 600		1,700	$ 1,600
Operating cash flows for operating leases paid																								$ 1,500
Maplebear, Inc., d/b/a Instacart \| Subscription to Mobile Verify Advance Service
Legal Proceedings
Annual commitment amount																											$ 1,200
Minimum
Leases
Remaining operating lease term (in years)																					1 year			1 year
Maximum
Leases
Remaining operating lease term (in years)																					8 years			8 years
Building
Leases
Office space subject to the lease (in square feet) \| ft²																					29			29
Pending Litigation \| General and administrative
Legal Proceedings
Legal fees																								$ 1,100
Pending Litigation \| UrbanFT
Legal Proceedings
Number of patents allegedly infringed \| patent													5
Number of patents infringed (at least) \| patent													2
Number of invalid patents \| patent													2
Number of patents not infringed \| patent													2
Pending Litigation \| Global Equity & Corporate Consulting, S.L. \| HooYu
Legal Proceedings
Compensatory damages awarded	$ 900	€ 0.8
Pending Litigation \| USAA \| Wells Fargo
Legal Proceedings
Number of patents allegedly infringed											2	3		5	4	4			2
Number of patents infringed (at least) \| patent											1	1
Amount awarded in damages to other party											$ 102,000	$ 200,000
Number of patents dropped \| patent														2
Number of invalid patents \| patent														1
Number of products accused of patent infringement \| product											0
Number of patents instituted \| petition																3
Number of patents denied institution petition \| petition									4							1							4
Pending Litigation \| USAA \| PNC Bank
Legal Proceedings
Number of patents allegedly infringed \| patent							2	2		2									2
Number of patents infringed (at least) \| patent																	1
Amount awarded in damages to other party																	$ 218,000
Number of invalid patents \| patent																				1
Number of patents denied institution petition \| petition					2	6												2		4
Pending Litigation \| UrbanFT
Legal Proceedings
Contingency amount claimed			$ 900
Pending Litigation \| Maplebear, Inc., d/b/a Instacart
Legal Proceedings
Contingency amount claimed				$ 2,000
Settled Litigation \| UrbanFT
Legal Proceedings
Compensatory damages awarded			$ 1,700