FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurement

The following tables represent the financial instruments measured at fair value on a recurring basis on the financial statements of the Company and the valuation approach applied to each class of financial instruments at December 31 (see Note 2, Summary of Significant Accounting Policies for further information):

	2022
	(in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash and cash equivalents:
Money market funds	$	7,194	$	—	$	—	$	7,194
Total cash and cash equivalents	7,194		—		—		7,194
Equity investments:
Mutual funds	928		—		—		928
Total equity investments	928		—		—		928
Debt securities available-for-sale:
Certificates of deposit	—		2,541		—		2,541
US Treasury securities	3,009		—		—		3,009
Commercial paper	—		424		—		424
Corporate notes and bonds	—		3,754		—		3,754
Total debt securities available-for-sale	3,009		6,719		—		9,728
Total assets measured at fair value	$	11,131	$	6,719	$	—	$	17,850

	2021
	(in thousands)
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Cash and cash equivalents:
Money market funds	$	5,563	$	—	$	—	$	5,563
Commercial paper	—		200		—		200
Total cash and cash equivalents	5,563		200		—		5,763
Equity investments:
Mutual funds	841		—		—		841
Total equity investments	841		—		—		841
Debt securities available-for-sale:
Certificates of deposit	—		1,351		—		1,351
US Treasury securities	250		—		—		250
Commercial paper	—		8,046		—		8,046
Corporate notes and bonds	—		13,232		—		13,232
Total debt securities available-for-sale	250		22,629		—		22,879
Total assets measured at fair value	$	6,654	$	22,829	$	—	$	29,483