Income Taxes - Additional Information (Details) - USD ($) $ 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
Income Tax Disclosure [Line Items]
U.S. federal statutory rates	21.00%		21.00%			21.00%	21.00%
Effective income tax rate	51.10%		7.30%			7.00%	18.80%
Income tax expense (benefit)	$ 6,064	$ (9,415)	$ (2,211)	$ (6,707)	$ 2,769	$ 2,865	$ (6,149)	$ (4,724)
Change in income tax expense (benefit)	$ 8,300					9,000
Tax benefit related to stock-based compensation						3,900
Netherlands
Income Tax Disclosure [Line Items]
Income tax expense (benefit)						$ (15,800)	$ (5,000)