Business Combinations - Additional Information (Details) - USD ($)			3 Months Ended				6 Months Ended
	Sep. 01, 2021	Jun. 01, 2021	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Business Acquisition [Line Items]
Goodwill			$ 2,363,109,000				$ 2,363,109,000		$ 1,772,043,000
Total revenue			156,478,000	$ 118,349,000	$ 54,045,000		274,827,000	$ 100,254,000
Net loss			80,440,000	75,685,000	17,179,000	$ 12,951,000	154,699,000	30,130,000
Invoice2go, Inc.
Business Acquisition [Line Items]
Acquisition date	Sep. 01, 2021
Business combination, percentage of outstanding equity interests acquired	100.00%
Acquisition purchase consideration	$ 674,305,000
Goodwill	585,448,000			585,400,000
Goodwill expected to be deductible for income tax purposes	0
Increase (decrease) in goodwill	8,000,000.0
Increase in deferred revenue	8,000,000.0
Costs associated with issuance and registration of shares issued	$ 200,000
Total revenue			9,700,000				12,900,000
Net loss			$ 11,000,000.0				15,000,000.0
Proforma net loss					24,542,000		155,474,000	62,316,000
Invoice2go, Inc. | Discount Rate | Customer Relationships
Business Acquisition [Line Items]
Fair value measurement input	0.123
Invoice2go, Inc. | Discount Rate | Developed Technology
Business Acquisition [Line Items]
Fair value measurement input	0.123
Invoice2go, Inc. | Discount Rate | Trade Name
Business Acquisition [Line Items]
Fair value measurement input	0.123
Invoice2go, Inc. | Pre-tax Royalty Rate | Developed Technology
Business Acquisition [Line Items]
Fair value measurement input	0.150
Invoice2go, Inc. | Pre-tax Royalty Rate | Trade Name
Business Acquisition [Line Items]
Fair value measurement input	0.025
Invoice2go, Inc. | General and Administrative Expense
Business Acquisition [Line Items]
Acquisition-related costs	$ 3,700,000
Invoice2go, Inc. | Nonrecurring Acquisition-Related Costs
Business Acquisition [Line Items]
Proforma net loss							$ 19,000,000.0	20,600,000
DivvyPay, Inc.
Business Acquisition [Line Items]
Acquisition date		Jun. 01, 2021
Business combination, percentage of outstanding equity interests acquired		100.00%
Acquisition purchase consideration		$ 2,300,000,000
Increase (decrease) in goodwill				$ (2,700,000)
Proforma net loss					$ 86,247,000			$ 148,201,000