Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Recurring - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Publicly traded equity securities	$ 153	$ 159
Derivative instruments	77,330	11,699
Total financial assets	669,174	627,302
Liabilities:
Derivative instruments	164,850	400,459
Money market and deposit accounts
Assets:
Cash and cash equivalents	587,615	611,071
Certificates of deposit
Assets:
Cash and cash equivalents	4,076	4,373
Level 1
Assets:
Publicly traded equity securities	153	159
Derivative instruments	0	0
Total financial assets	587,768	611,230
Liabilities:
Derivative instruments	0	0
Level 1 | Money market and deposit accounts
Assets:
Cash and cash equivalents	587,615	611,071
Level 1 | Certificates of deposit
Assets:
Cash and cash equivalents	0	0
Level 2
Assets:
Publicly traded equity securities	0	0
Derivative instruments	77,330	11,699
Total financial assets	81,406	16,072
Liabilities:
Derivative instruments	164,850	400,459
Level 2 | Money market and deposit accounts
Assets:
Cash and cash equivalents	0	0
Level 2 | Certificates of deposit
Assets:
Cash and cash equivalents	$ 4,076	$ 4,373