The amount of related back-end fees and prepayment premium being converted together with the original debt in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

No definition available.

Note 7 - Borrowings (Details Textual)		6 Months Ended	12 Months Ended
Note 7 - Borrowings (Details Textual)	Feb. 14, 2018 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 02, 2020 USD ($)	Sep. 22, 2015 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity								$ 50,000,000
Debt Conversion, Original Debt, Amount						$ 42,794,000
Debt Instrument, Redemption Initial Prepayment Premium Percentage								5.00%
Debt Instrument, Redemption Annual Decline in Prepayment Premium Percentage								1.00%
Debt Instrument, Redemption Prepayment Premium Percentage after Fifth Year								0.00%
Debt Instrument, Financing Fee Percentage								1.50%
Debt Instrument, Final Facility Fee Percentage	15.00%							15.00%
Debt Instrument, Covenant Compliance Cash and Certain Cash Equivalents Minimum	$ 3,500,000							$ 5,000,000
Debt Instrument, Covenant Compliance Prepayment Multiplier for Revenue Shortfall								2
Debt Instrument, Covenant Compliance Target Minimum Revenue, Next Twelve Months	15,000,000						$ 10,000,000
Debt Instrument, Covenant, Compliance Target Minimum Revenue Second Year	20,000,000						12,000,000
Debt Instrument, Covenant Compliance Target Minimum Revenue Third Year	25,000,000						$ 15,000,000
Interest Expense, Total					1,480,000	5,692,000
CRG [Member] \| Loan Agreement [Member]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total					588,000	757,000		$ 1,300,000
Amortization of Debt Discount (Premium)					169,000	117,000
Interest Expense, Total					$ 1,500,000	$ 5,400,000
CRG [Member] \| Loan Agreement [Member] \| Forecast [Member]
Debt Instrument, Periodic Payment, Principal		$ 1,400,000
Debt Instrument, Periodic Payment, Total		$ 2,700,000	$ 2,700,000	$ 5,500,000
CRG [Member] \| Loan Agreement [Member] \| Series A Preferred Stock Purchase Agreement with CRG [Member]
Debt Conversion, Original Debt, Amount	38,000,000
Debt Conversion, Fees and Prepayment Premium Amount	$ 3,800,000
Debt Instrument, Interest Rate, Stated Percentage								12.50%
CRG [Member] \| Loan Agreement [Member] \| First Tranche, Borrowed on September 22, 2015 [Member]
Debt Instrument, Face Amount								$ 30,000,000
CRG [Member] \| Loan Agreement [Member] \| Second Tranche, Borrowed on June 15, 2016 [Member]
Debt Instrument, Face Amount								$ 10,000,000