Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Summary of Long-Term Debt

Long-term debt was comprised of the following:

	As of December 31
	2020		2019
Total credit facility	$	300,000	$	300,000
Balance outstanding	$	54,600	$	99,700
Standby letters of credit	$	1,740	$	1,800
Amount available, subject to covenant restrictions	$	243,660	$	198,500
Weighted-average interest rate		1.92%		3.25%
Commitment fee percentage per annum		0.23%		0.23%