MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2022

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-sale Securities

The following is a summary of available-for-sale securities at December 31:

($ in thousands)		2022				2021
Marketable Securities:	Fair Value Hierarchy	Cost		Estimated Fair Value		Cost		Estimated Fair Value
Certificates of deposit
with unrecognized losses for less than 12 months		$	—	$	—	$	401	$	400
with unrecognized gains		—		—		—		—
Total Certificates of deposit	Level 1	—		—		401		400
U.S. Treasury and agency notes
with unrecognized losses for less than 12 months		13,916		13,832		1,360		1,358
with unrecognized losses for more than 12 months		500		499		—		—
with unrecognized gains		1,250		1,251		—		—
Total U.S. Treasury and agency notes	Level 2	15,666		15,582		1,360		1,358
Corporate notes
with unrecognized losses for less than 12 months		17,236		17,112		9,231		9,225
with unrecognized losses for more than 12 months		251		250		—		—
with unrecognized gains		499		500		—		—
Total Corporate notes	Level 2	17,986		17,862		9,231		9,225
		$	33,652	$	33,444	$	10,992	$	10,983

Summary of Maturities, at Par, of Marketable Securities by Year

The following tables summarize the maturities, at par, of marketable securities by year ($ in thousands):

December 31, 2022	2023		2024		Total
U.S. Treasury and agency notes	$	15,225	$	500	$	15,725
Corporate notes	17,470		500		17,970
	$	32,695	$	1,000	$	33,695

December 31, 2021	2022		2023		Total
Certificates of deposit	$	400	$	—	$	400
U.S. Treasury and agency notes	855		500		1,355
Corporate notes	8,925		250		9,175
	$	10,180	$	750	$	10,930