Note 16 - Commitments and Contingencies (Details Textual) - USD ($)	Mar. 31, 2020	Dec. 31, 2021	Sep. 01, 2020	Jul. 31, 2020	Sep. 01, 2019
Self Insurance Auto Liability Claims Threshold Amount			$ 2,000,000.0		$ 1,000,000.0
Self Insurance Auto Liability Claims Threshold Amount			$ 2,000,000.0		$ 1,000,000.0
Minimum [Member]
Self Insurance Liability Claims, Exceeding Amount Reserve Threshold		$ 2,000,000.0
Settlement Of Collective And Class Action Lawsuit [Member]
Loss Contingency Accrual, Ending Balance				$ 16,500,000
Litigation Settlement, Amount Awarded to Other Party	$ 421,000