Summary of Significant Accounting Policies - Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Weighted average shares used in computing per share amounts:
Net income attributable to common stockholders	$ 66,836	$ 4,878	$ 50,705	$ (22,672)	$ 71,714	$ 28,033
Weighted average common shares-basic	42,561,035		42,259,061		42,530,523	42,167,844
Basic net income (loss) per share (in dollars per share)	$ 1.57		$ 1.20		$ 1.69	$ 0.66
Effect of dilutive stock options and restricted stock awards (in shares)	902,728		288,273
Weighted average common shares-diluted	43,463,763		42,547,334		43,214,119	42,602,405
Diluted net income (loss) per share (in dollars per share)	$ 1.54		$ 1.19		$ 1.66	$ 0.66
Anti-dilutive shares					6,546	26,789
Stock options and restricted stock
Weighted average shares used in computing per share amounts:
Anti-dilutive shares	12,915		44,546