Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Business Acquisition [Line Items]
Business Combination, Separately Recognized Transactions, Expenses and Losses Recognized	$ 3,164
Payments to Acquire Businesses, Net of Cash Acquired	243,983	$ 0	$ 0
Current year acquisitions	195,166
Revolver Amount Drawn to Fund Code Acquisition	75,000
Revolver repaid during year related to Code Acquistion	37,000
Code Acquisition
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	172,815
Current year acquisitions	139,347
Revolver Amount Drawn to Fund Code Acquisition	75,000
Revolver repaid during year related to Code Acquistion	37,000
Code Acquisition | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 44,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years
Code Acquisition | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Code Acquisition | Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 6,200
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Magicard Acquisition
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 56,694
Current year acquisitions	43,235
Magicard Acquisition | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 18,303
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years
Magicard Acquisition | Trade Names [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 567
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	2 years
Magicard Acquisition | Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 2,837
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Nordic ID Acquisition
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 9,804
Current year acquisitions	12,584
Nordic ID Acquisition | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 3,803
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Nordic ID Acquisition | Technology-Based Intangible Assets [Member]
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 600
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 years