Note 9 - Debt - Principal Payments Due on Term Loan (Details) - Loans Payable [Member] $ in Thousands	Jun. 30, 2021 USD ($)
Remainder of 2021	$ 0
2022	4,125
2023	22,688
2024	30,937
2025	57,750
2026	49,500
Total	$ 165,000

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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