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Note 8 - Debt - Debt Outstanding (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Finance lease liabilities		$ 0.1	$ 0.1
Unamortized debt issuance costs		0.0	(3.1)
Total debt		269.2	308.5
Less: current portion of long-term debt(a)	[1]	(3.2)	(10.9)
Long-term debt		266.0	297.6
Secured Debt [Member]
Long-term debt, gross		1.1	1.5
Senior Unsecured Notes [Member]
Long-term debt, gross		0.0	300.0
The 2021 Credit Agreement [Member] | Term Loan [Member]
Long-term debt, gross		100.0	0.0
The 2021 Credit Agreement [Member] | Revolving Credit Facility [Member]
Long-term debt, gross		$ 168.0	$ 10.0
[1] As of June 30, 2021, the Company is required to repay $2.5 million in outstanding credit facility borrowings, $0.6 million of current maturities of secured borrowings and $0.1 million of current maturities of finance lease liabilities over the next 12 months.

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