Note 4 - Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 18, 2023 shares	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2022 USD ($)	Mar. 31, 2023 USD ($)	Jan. 17, 2023 shares	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Retained Earnings (Accumulated Deficit)		$ (56,262)		$ (56,262)					$ (53,525)
Accounts Receivable, Allowance for Credit Loss		3,715	$ 2,454	3,715	$ 2,454	$ 4,070			3,760	$ 2,245	$ 2,236
Financing Receivable, Allowance for Credit Loss		$ 1,187	617	$ 1,187	617	850			$ 617	0	0
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001		$ 0.001					$ 0.001
Common Stock, Shares Authorized (in shares) | shares	20,000,000	20,000,000		20,000,000			100,000,000		20,000,000
Stock Issued During Period, Fractional Shares, Reverse Stock Splits (in shares) | shares	0
Common Stock, Shares, Issued (in shares) | shares	7,174,506	7,204,506		7,204,506			35,827,677		7,174,506
Contract with Customer, Performance Obligation Satisfied in Previous Period		$ 0	$ 0	$ 0	$ 0
Operating Lease, Right-of-Use Asset		1,498		1,498					$ 1,761
Operating Lease, Liability		1,626		1,626
Other Current Assets [Member]
Operating Lease, Right-of-Use Asset		1,500		1,500
Other Current Liabilities [Member]
Operating Lease, Liability		$ 1,630		$ 1,630
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	5
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings (Accumulated Deficit)								$ (190)
Accounts Receivable, Allowance for Credit Loss						0		40	36	0	0
Financing Receivable, Allowance for Credit Loss						$ 0		$ 150	$ 155	$ 0	$ 0