Note 18 - Commitments and Contingencies (Details Textual) - USD ($)		3 Months Ended
	Apr. 01, 2023	Mar. 31, 2022	Mar. 31, 2023	Dec. 31, 2022
Performance and Payment Bonds Outstanding Amount			$ 5,000,000.0
Letters of Credit Outstanding, Amount			1,500,000
Unsecured Promissory Note With Tidal Power Group [Member]
Payments for Additional Consideration		$ 28,852,844
Unsecured Promissory Note With Tidal Power Group [Member] | Subsequent Event [Member] | Maximum [Member]
Payments for Additional Consideration	$ 28,852,844
Unsecured Promissory Note With Tidal Power Group [Member] | Subsequent Event [Member] | Minimum [Member]
Payments for Additional Consideration	$ 17,635,228
Seller Financed Notes Payable - Front Line Power Acquisition [Member]
Debt Instrument, Fair Value Disclosure			44,785,000	$ 43,693,000
Syndicated Term Note [Member]
Debt Instrument, Fair Value Disclosure			$ 607,000	$ 536,000
Debt Instrument, Share Price Covenant (in dollars per share)			$ 6.00