Balance Sheet Information - Intangible Assets And Accrued Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Amortizable intangible assets
Intangible assets, gross	$ 18,730		$ 18,730		$ 18,730
Accumulated amortization	(9,667)		(9,667)		(7,979)
Intangible assets, net	9,063		9,063		10,751
Amortization expense for acquired intangible assets	563	$ 562	1,688	$ 1,688
Future amortization expense for acquired intangible assets
Remainder of fiscal 2020	563		563
Fiscal 2021	2,251		2,251
Fiscal 2022	2,232		2,232
Fiscal 2023	2,118		2,118
Fiscal 2024	1,356		1,356
Thereafter	543		543
Intangible assets, net	9,063		9,063		10,751
Components of accrued expenses
Accrued payroll and personnel costs	38,386		38,386		39,095
Operating lease liabilities	7,955		7,955
Deferred revenue	8,308		8,308		5,572
Other	9,353		9,353		12,958
Total accrued expenses	64,002		64,002		57,625
Client relationships
Amortizable intangible assets
Intangible assets, gross	18,130		$ 18,130		18,130
Client relationships | Minimum
Amortizable intangible assets
Useful life			7 years
Client relationships | Maximum
Amortizable intangible assets
Useful life			9 years
Non-solicitation agreements
Amortizable intangible assets
Intangible assets, gross	$ 600		$ 600		$ 600
Non-solicitation agreements | Minimum
Amortizable intangible assets
Useful life			2 years
Non-solicitation agreements | Maximum
Amortizable intangible assets
Useful life			4 years