Impact on Previously Issued Financial Statements for Immaterial Adjustments - Summary of Revised Consolidated Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended					9 Months Ended		12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total revenues	$ 96,801	$ 93,643	$ 75,197	$ 86,823	$ 77,705	$ 289,106	$ 239,725	$ 330,967
Total cost of revenues	23,835	26,888	27,603			76,947	82,267
Gross profit	72,966	66,755	47,594	58,093	51,771	212,159	157,458	223,116
Total operating expenses	58,017	49,211	51,903			162,323	151,284
Income (loss) from operations	14,949	17,544	(4,309)	12,334	(1,851)	49,836	6,174	22,431
Income (loss) before income taxes	11,862	11,526	(30,263)	6,105	(8,514)	40,767	(32,672)	(23,040)
Income tax expense (benefit)	6,064	(9,415)	(2,211)	(6,707)	2,769	2,865	(6,149)	(4,724)
Net income (loss)	$ 5,798	$ 20,941	$ (28,052)	$ 12,812	$ (11,283)	$ 37,902	$ (26,523)	$ (18,316)
Net income (loss) per share:
Basic	$ 0.15	$ 0.56	$ (0.77)	$ 0.35	$ (0.31)	$ 1.01	$ (0.73)	$ (0.50)
Diluted	$ 0.15	$ 0.53	$ (0.77)	$ 0.34	$ (0.31)	$ 0.97	$ (0.73)	$ (0.50)
As Reported
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total revenues		$ 94,964	$ 74,810	$ 86,495	$ 77,459			$ 329,646
Total cost of revenues		26,881
Gross profit		68,083	47,207	57,765	51,525			221,795
Total operating expenses		47,811
Income (loss) from operations		20,272	(4,696)	12,006	(2,097)			19,331
Income (loss) before income taxes		14,254	(30,650)	5,777	(8,760)			(26,140)
Income tax expense (benefit)		(7,384)	(2,469)	(6,718)	3,002			(5,509)
Net income (loss)		$ 21,638	$ (28,181)	$ 12,495	$ (11,762)			$ (20,631)
Net income (loss) per share:
Basic		$ 0.58	$ (0.77)	$ 0.34	$ (0.33)			$ (0.57)
Diluted		$ 0.54	$ (0.77)	$ 0.33	$ (0.33)			$ (0.57)
Adjustment
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total revenues		$ (1,321)	$ 387	$ 328	$ 246			$ 1,321
Total cost of revenues		7
Gross profit		(1,328)	387	328	246			1,321
Total operating expenses		1,400
Income (loss) from operations		(2,728)	387	328	246			3,100
Income (loss) before income taxes		(2,728)	387	328	246			3,100
Income tax expense (benefit)		(2,031)	258	11	(233)			785
Net income (loss)		$ (697)	$ 129	$ 317	$ 479			$ 2,315