Selected Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 124,431	$ 131,557	$ 139,325	$ 127,805	$ 523,118	$ 492,851	$ 443,388
Cost of services	87,356	91,693	99,790	96,153	374,992	373,973	335,249
Income from operations	8,306	13,051	11,451	7,670	40,478	20,625	17,045
Net income	$ 4,510	$ 11,279	$ 9,270	$ 6,523	$ 31,582	$ 21,456	$ 13,089
Net income per share
Basic (in dollars per share)	$ 0.25	$ 0.62	$ 0.51	$ 0.36	$ 1.74	$ 1.18	$ 0.74
Diluted (in dollars per share)	$ 0.24	$ 0.60	$ 0.49	$ 0.35	$ 1.67	$ 1.15	$ 0.71