Fair Value Measurement - Summary of Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	$ 457,126	$ 260,837
Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	(366)	41,923
Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	457,492	218,914
Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Commercial paper
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	116,902	48,714
Commercial paper | Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Commercial paper | Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	116,902	48,714
Commercial paper | Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Corporate bonds
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	329,777	169,998
Corporate bonds | Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Corporate bonds | Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	329,777	169,998
Corporate bonds | Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
U.S. Treasury bills
Assets (liabilities) measured at fair value
Assets (liabilities), fair value		44,992
U.S. Treasury bills | Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value		44,992
U.S. Treasury bills | Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value		0
U.S. Treasury bills | Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value		0
Municipal bonds
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	11,906	5,839
Municipal bonds | Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Municipal bonds | Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	11,906	5,839
Municipal bonds | Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	0	0
Commodity derivatives
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	(1,459)	(8,706)
Commodity derivatives | Level 1
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	(366)	(3,069)
Commodity derivatives | Level 2
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	(1,093)	(5,637)
Commodity derivatives | Level 3
Assets (liabilities) measured at fair value
Assets (liabilities), fair value	$ 0	$ 0