Note 14 - Debt (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

			Years Ended December 31,
	Interest Rate	Maturity Date	2021			2020
2021 Bonds	1.5%	January 2042	$	66,486		$	—
SBA Loans	1.0%	April 2025		320			1,006
Equipment	4% to 5%	February 2022 to December 2024		156			248
				66,962			1,254
Less current portion				(158	)		(807	)
Long-term portion			$	66,804		$	447

Schedule of Maturities of Long-term Debt [Table Text Block]

Year Ending December 31,	Amount
2022	$	158
2023		159
2024		66,616
2025		29
	$	66,962

Schedule of Debt [Table Text Block]

	Principal Amount of 2020 Notes			Principal Amount of 2020/21 Notes			Debt Discount			Debt Issue Costs			Total Notes			2020 Notes Embedded Derivative			Total 2020 Notes and 2020/21 Notes Embedded Derivative
Balance, December 31, 2019	$	14,053		$	—		$	(123	)	$	(30	)	$	13,900		$	—		$	13,900
Amortization of debt discount		—			—			405			—			405			—			405
Amortization of debt issue costs		—			—			—			30			30			—			30
Paid-in-kind interest		47			269			—			—			316			—			316
Exchange of 2020 Notes for 2020/21 Notes		(14,100	)		14,100			—			—			—			—			—
Conversion of 2020/21 Notes into common Stock		—			(14,651	)		—			—			(14,651	)		—			(14,651	)
Original issue discount paid with 2020/21 Notes		—			282			(282	)		—			—			—			—
Fair value of 2020/21 embedded derivative liability upon issuance		—			—			—			—			—			2,848			2,848
Increase in fair value of 2020/21 Notes embedded derivative liability prior to conversion of 2020/21 Notes		—			—			—			—			—			5,759			5,759
Decrease in fair value of 2020/21 Notes embedded derivative liability upon conversion to common stock		—			—			—			—			—			(8,607	)		(8,607	)
Balance, December 31,2020	$	—		$	—		$	—		$	—		$	—		$	—		$	—