Investments (Tables)

3 Months Ended

Mar. 31, 2024

Investments

Schedule of marketable securities

	March 31, 2024				December 31, 2023
	Amortized		Market		Amortized		Market
	Cost		Value		Cost		Value
	(Dollars in thousands)
Marketable securities:
Current	$	—	$	—	$	215	$	215
Due from one through five years		3,524		3,567		3,518		3,592
Due from six through ten years		2,836		2,800		2,836		2,830
Total	$	6,360	$	6,367	$	6,569	$	6,637

Schedule of unrealized gains and losses on marketable securities

	March 31, 2024				December 31, 2023
	Unrealized		Unrealized		Unrealized		Unrealized
	Gains		Losses		Gains		Losses
	(Dollars in thousands)
Marketable securities	$	99	$	(92)	$	118	$	(50)