Note 4 - Long-term Debt	3 Months Ended
Mar. 31, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	(4) Long-Term Debt We maintain a credit agreement that provides for an unsecured committed credit facility with an aggregate principal amount of $30.0 million which matures in August 2023. At March 31, 2021, there was no outstanding principal balance on the facility. As of that date, we had outstanding standby letters of credit to guarantee settlement of self-insurance claims of $17.0 million and remaining borrowing availability of $13.0 million. At December 31, 2020, there was also no outstanding principal balance on the facility. As of that date, we also had outstanding standby letters of credit of $17.0 million on the facility. This facility bears interest at a variable rate based on the London Interbank Offered Rate or the lender’s Prime Rate, in each case plus/minus applicable margins. The interest rate for the facility that would apply to outstanding principal balances was 0.78% at March 31, 2021. Our credit facility prohibits us from paying, in any fiscal year, stock redemptions and dividends in excess of 25% of our net income from the prior fiscal year. A waiver allowing stock redemptions and dividends in excess of the 25% limitation in a total amount of up to $60 million in 2020 was obtained from the lender in November 2020. This facility also contains restrictive covenants which, among other matters, require us to maintain compliance with cash flow leverage and fixed charge coverage ratios. We were in compliance with all covenants at March 31, 2021 and December 31, 2020.

Note 4 - Long-term Debt

3 Months Ended

Mar. 31, 2021

(4) Long-Term Debt

We maintain a credit agreement that provides for an unsecured committed credit facility with an aggregate principal amount of $30.0 million which matures in August 2023. At March 31, 2021, there was no outstanding principal balance on the facility. As of that date, we had outstanding standby letters of credit to guarantee settlement of self-insurance claims of $17.0 million and remaining borrowing availability of $13.0 million. At December 31, 2020, there was also no outstanding principal balance on the facility. As of that date, we also had outstanding standby letters of credit of $17.0 million on the facility. This facility bears interest at a variable rate based on the London Interbank Offered Rate or the lender’s Prime Rate, in each case plus/minus applicable margins. The interest rate for the facility that would apply to outstanding principal balances was 0.78% at March 31, 2021.

Our credit facility prohibits us from paying, in any fiscal year, stock redemptions and dividends in excess of 25% of our net income from the prior fiscal year. A waiver allowing stock redemptions and dividends in excess of the 25% limitation in a total amount of up to $60 million in 2020 was obtained from the lender in November 2020. This facility also contains restrictive covenants which, among other matters, require us to maintain compliance with cash flow leverage and fixed charge coverage ratios. We were in compliance with all covenants at March 31, 2021 and December 31, 2020.