Note 13 - Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Guarantor Obligations [Table Text Block]

	Amount of Commitment Expiration per Period
	Total Amounts Committed		Less Than 1 Year		1-3 Years		3-5 Years		Beyond 5 Years
Letters of Credit:
Employee-Related	$	58,835	$	58,835	$	—	$	—	$	—
Environmental		398		398		—		—		—
Other		134,074		134,074		—		—		—
Total Letters of Credit	$	193,307	$	193,307	$	—	$	—	$	—
Surety Bonds:
Employee-Related	$	81,524	$	63,989	$	17,535	$	—	$	—
Environmental		535,303		501,335		33,968		—		—
Other		4,315		3,483		832		—		—
Total Surety Bonds	$	621,142	$	568,807	$	52,335	$	—	$	—