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Restricted Available-for-Sale Investments (Tables)

3 Months Ended

Mar. 31, 2025

Investments, Debt and Equity Securities [Abstract]

Reconciliation of Restricted AFS Investments


		March 31, 2025
Dollars in thousands		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Estimated Fair Value
Restricted investments		$	21,904			$	—			$	(217	)		$	21,687


		December 31, 2024
Dollars in thousands		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Estimated Fair Value
Restricted investments		$	21,633			$	92			$	(13	)		$	21,712

The following tables include the gross unrealized losses and estimated fair values of restricted AFS investments that were in a continuous unrealized loss position, for which no allowance for credit loss has been recorded, as of the periods indicated:

Summary of Gross Unrealized Losses And Estimated Fair Values of Restricted AFS Investments


		March 31, 2025
		Less than 12 Months								12 Months or Longer								Total
Dollars in thousands		Estimated Fair Value				Gross Unrealized Losses				Estimated Fair Value				Gross Unrealized Losses				Estimated Fair Value				Gross Unrealized Losses
Restricted investments		$	21,687			$	(217	)		$	—			$	—			$	21,687			$	(217	)


		December 31, 2024
		Less than 12 Months								12 Months or Longer								Total
Dollars in thousands		Estimated Fair Value				Gross Unrealized Losses				Estimated Fair Value				Gross Unrealized Losses				Estimated Fair Value				Gross Unrealized Losses
Restricted investments		$	2,205			$	(13	)		$	—			$	—			$	2,205			$	(13	)

Summary of Amortized Cost And Estimated Fair Values of Restricted AFS Investments by Contractual Maturity


		March 31, 2025
Dollars in thousands		Amortized Cost				Estimated Fair Value
Due in one year		$	19,663			$	19,473
Due within one year to five years			2,241				2,214
Due within five years to ten years			—				—
Due after ten years			—				—
Total		$	21,904			$	21,687