Note 12 - Commitments and Contingent Liabilities (Tables)

6 Months Ended

Jun. 30, 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	$	51,760	$	51,760	$	—	$	—	$	—
Environmental		398		398		—		—		—
Other		136,574		136,574		—		—		—
Total Letters of Credit	$	188,732	$	188,732	$	—	$	—	$	—
Surety Bonds:
Employee-Related	$	81,524	$	81,524	$	—	$	—	$	—
Environmental		535,491		484,318		51,173		—		—
Other		4,394		2,986		1,408		—		—
Total Surety Bonds	$	621,409	$	568,828	$	52,581	$	—	$	—