Note 1 - General (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Restrictions on Cash and Cash Equivalents [Table Text Block]

	December 31, 2022		December 31, 2021
	(In thousands)
Cash and cash equivalents	$	13,331	$	24,739
Restricted cash		25		25
Total cash, cash equivalents and restricted cash	$	13,356	$	24,764

Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity [Table Text Block]

	Operating lease payments			Expected sublease receipts
	(In thousands)
2023	$	607		$	556
2024		613			573
2025		619			590
2026		207			199
2027		—			—
2028		—			—
Thereafter		—			—
Total future minimum lease payments		2,046			1,918
Less imputed interest		(368	)
Total operating lease liabilities	$	1,678