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Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Dec. 13, 2017	May 26, 2016
Debt Instrument
Long-term Debt, Fair Value	$ 159,701	$ 160,376
150M Senior Notes
Debt Instrument
Debt Instrument, Maturity Date	Dec. 15, 2027
Interest rate (percentage)			6.25%
Debt Instrument, Interest Rate, Effective Percentage	6.25%
Long-term Debt, Fair Value	$ 150,000	150,000
BB&T Term Note Payable
Debt Instrument
Debt Instrument, Maturity Date	May 26, 2031
Interest rate (percentage)				1.65%
Debt Instrument, Interest Rate, Effective Percentage	1.81%
Long-term Debt, Fair Value	$ 3,524	3,611
Florida State Board of Administration
Debt Instrument
Debt Instrument, Maturity Date	Jul. 01, 2026
Interest rate (percentage)	0.93%
Long-term Debt, Fair Value	$ 6,177	$ 6,765

X

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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