Balance Sheet Information - Intangible Assets And Accrued Expenses (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
Amortizable intangible assets
Intangible assets, gross	$ 27,369		$ 27,369		$ 23,862
Accumulated amortization	(12,286)		(12,286)		(10,502)
Intangible assets, net	15,083		15,083		13,360
Amortization expense for acquired intangible assets	940	$ 562	1,784	$ 1,125
Future amortization expense for acquired intangible assets
Remainder of fiscal 2021	2,056		2,056
Fiscal 2022	4,093		4,093
Fiscal 2023	3,919		3,919
Fiscal 2024	2,914		2,914
Fiscal 2025	1,860		1,860
Thereafter	241		241
Intangible assets, net	15,083		15,083		13,360
Components of accrued expenses
Accrued payroll and personnel costs	36,428		36,428		53,284
Operating lease liabilities	7,774		7,774		8,083
Deferred revenue	9,090		9,090		8,777
Other	10,912		10,912		9,737
Total accrued expenses	64,204		64,204		79,881
Client relationships
Amortizable intangible assets
Intangible assets, gross	19,200		$ 19,200		19,200
Client relationships | Minimum
Amortizable intangible assets
Useful life			5 years
Client relationships | Maximum
Amortizable intangible assets
Useful life			9 years
Proprietary technology
Amortizable intangible assets
Intangible assets, gross	6,129		$ 6,129		2,962
Useful life			5 years
Non-solicitation agreements
Amortizable intangible assets
Intangible assets, gross	1,600		$ 1,600		1,350
Non-solicitation agreements | Minimum
Amortizable intangible assets
Useful life			2 years
Non-solicitation agreements | Maximum
Amortizable intangible assets
Useful life			4 years
Trade name
Amortizable intangible assets
Intangible assets, gross	$ 440		$ 440		$ 350
Useful life			5 years