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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Event Interest Rate Swap Agreement On July 22, 2021, we entered into a new fixed-rate interest rate swap agreement to change the LIBOR-based component of the interest rate on a portion of our variable rate debt to a fixed rate of 1.291%. The interest rate swap has a notional amount of $60.0 million and a maturity date of July 31, 2024. The objective of the interest rate swap is to eliminate the variability of cash flows in interest payments on the first $60.0 million of variable rate debt attributable to changes in benchmark one-month LIBOR interest rates. The hedged risk is the interest rate risk exposure to changes in interest payments, attributable to changes in benchmark one-month LIBOR interest rates over the interest rate swap term. The changes in cash flows of the interest rate swap are expected to exactly offset changes in cash flows of the variable rate debt. We designated the interest rate swap as a cash flow hedge at inception.