Note 14 - Commitments and Contingent Liabilities (Tables)

3 Months Ended

Mar. 31, 2021

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	$	79,476	$	53,053	$	26,423	$	—	$	—
Environmental		398		398		—		—		—
Other		91,282		91,282		—		—		—
Total Letters of Credit	$	171,156	$	144,733	$	26,423	$	—	$	—
Surety Bonds:
Employee-Related	$	83,524	$	71,024	$	12,500	$	—	$	—
Environmental		538,320		507,367		30,953		—		—
Other		4,255		3,977		278		—		—
Total Surety Bonds	$	626,099	$	582,368	$	43,731	$	—	$	—
Guarantees:
Other	$	7,306	$	6,377	$	398	$	398	$	133