Balance Sheet Information - Allowance for Credit Losses for Accounts Receivable, Capitalized Internal-Use Software and Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Activity in the allowance for credit losses
Balance at the beginning of the period			$ 617
Charged to expense			98	$ 63
Write-offs			(54)
Balance at the end of the period	$ 661		661
Capitalized internal-use software and accumulated amortization
Capitalized internal-use software	134,568		134,568		$ 119,178
Accumulated amortization	(93,945)		(93,945)		(82,677)
Capitalized internal-use software, net	40,623		40,623		36,501
Property and equipment, net
Property and equipment, gross	121,796		121,796		118,046
Accumulated depreciation	(57,730)		(57,730)		(51,309)
Property and equipment, net	64,066		64,066		66,737
Depreciation expense	4,014	$ 4,076	8,019	7,989
Changes in goodwill
Balance at the beginning of the period			21,655
Additions attributable to current period acquisition			11,529
Balance at the end of the period	33,184		33,184
Cost of revenues
Capitalized internal-use software and accumulated amortization
Amortization of capitalized internal-use software	5,882	$ 4,690	11,268	$ 9,147
Office equipment
Property and equipment, net
Property and equipment, gross	4,859		4,859		4,619
Computer equipment
Property and equipment, net
Property and equipment, gross	45,942		45,942		42,936
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	13,138		13,138		12,723
Software
Property and equipment, net
Property and equipment, gross	6,627		6,627		6,609
Leasehold improvements
Property and equipment, net
Property and equipment, gross	46,508		46,508		46,192
Time clocks rented by clients
Property and equipment, net
Property and equipment, gross	$ 4,722		$ 4,722		$ 4,967