Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Future Minimum Lease Payments under Operating Leases

Future minimum lease payments under operating leases that have initial noncancelable lease terms in excess of one year were as follows (in thousands):

	December 31,
	2020			2019
2021	$	40,224		$	33,374
2022		33,543			25,911
2023		28,012			23,098
2024		23,578			19,162
2025		21,261			15,330
Thereafter		96,491			92,991
Total lease payments		243,109			209,866
Less: imputed interest		(46,863	)		(43,085	)
Operating lease liabilities	$	196,246		$	166,781

Lease Cost

The following table summarizes lease costs (in thousands):

	Year Ended December 31,
	2020			2019
Operating lease cost	$	43,810		$	39,064
Variable lease cost		1,550			2,326
Short-term lease cost		25,387			31,340
Sublease income		(1,143	)		(420	)
Total lease cost	$	69,604		$	72,310

Operating Leases, Weighted Average Discount Rate and Remaining Lease Term

The following table summarizes other supplemental information about the Company’s operating leases:

	December 31,
	2020			2019
Weighted average discount rate		4.1	%		4.0	%
Weighted average remaining lease term	10 years			11 years