Long-Term Debt - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Sep. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Debt issuance costs	$ 10,000
Face amount	325,000	$ 325,000	$ 325,000
Deferred issuance costs	$ 10,000
Term	7 years