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Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended			3 Months Ended			12 Months Ended
	May 03, 2023	Apr. 17, 2023	Jun. 12, 2018	Jun. 08, 2018	Feb. 28, 2023	Nov. 30, 2022	May 31, 2022	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2022	Feb. 28, 2022	Feb. 07, 2022	Mar. 08, 2021	Mar. 11, 2013
Equity (Textual)
Dividends on preferred stock								$ 157		$ 370
Unrecognized compensation cost								$ 2,900
Weighted-average period								1 year 2 months 12 days
Deferred stock units granted												290,000
Dividends on common stock								$ 0.075		$ 0.075
Cash dividend paid								$ 0.075		$ 0.075
Redemption of preferred stock								$ 1,000
Board of Directors [Member]
Equity (Textual)
Preferred stock, liquidation preference per share													$ 8.5
Preferred Stock, Liquidation Preference, Value													$ 1,000
Employee [Member] | Lumo Finland Grant [Member]
Equity (Textual)
Percentage of ownership						5.10%
Employee [Member] | Lumo Sweden [Member]
Equity (Textual)
Percentage of ownership						2.30%
Dividend Paid [Member]
Equity (Textual)
Preferred stock dividend rate											$ 0.5301
Dividends on preferred stock											$ 500
Preferred Stock [Member]
Equity (Textual)
Preferred stock, dividends per share								$ 0.1594
Redemption of preferred stock, shares								(117,000)
Redemption of preferred stock								$ 1,000
Preferred Stock [Member] | Stock Repurchase Program [Member]
Equity (Textual)
Redemption of preferred stock, shares								117,647
Redemption of preferred stock								$ 1,000
Preferred Stock [Member] | GRE [Member]
Equity (Textual)
Preferred stock, dividends per share											$ 0.5301
Preferred Stock [Member] | Subsequent Event [Member]
Equity (Textual)
Price per share		$ 8.5
Preferred stock, dividends per share		$ 0.6895
Paid date of declared dividend		May 15, 2023
Record date of declared dividend		May 05, 2023
Redemption of preferred stock, shares		117,647
Redemption of preferred stock		$ 1,000
Redemption Date		May 15, 2023
Preferred Stock [Member] | Subsequent Event [Member] | Board of Directors [Member]
Equity (Textual)
Preferred stock dividend redeemable	$ 2,000
Redemption Date	Jun. 13, 2022
Common Stock
Equity (Textual)
Number of common stock shares issued							72,657
Warrant [Member]
Equity (Textual)
Stock Repurchased and Retired During Period, Shares							136,987
Class B common stock [Member]
Equity (Textual)
Number of shares repurchased, shares								0		0
Number of stock authorized to be repurchased															7,000,000
Remaining number of shares available for repurchase								4,700,000
Warrants to purchase shares								1,048,218
Warrants exercise price per share								$ 4.77
Treasury Stock, Common, Shares								2,700,000			2,700,000
Treasury stock cost								$ 19,175,000			$ 19,000
Weighted average cost per share								$ 7.05			$ 7.03
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings					290,000	123,302			290,000
Description of vested period						May 2023 and up to May 2025
Class B common stock [Member] | 2021 Plan
Equity (Textual)
Maximum number of shares reserved for the grant of awards														1,000,000
Class B common stock [Member] | Howard S. Jonas [Member]
Equity (Textual)
Warrants to purchase shares				1,048,218
Warrants exercise price per share				$ 4.77
Amount of warrants aggregate exercise price				$ 5,000
Class B common stock [Member] | Investor [Member]
Equity (Textual)
Amount of aggregate sales price			$ 1,000
Warrants to purchase shares			209,644
Warrants exercise price per share			$ 4.77
Amount of warrants aggregate exercise price			$ 1,000
Class B common stock [Member] | Common Stock
Equity (Textual)
Stockholders grant of options purchase								33,000		9,000
Class B common stock [Member] | Warrant [Member]
Equity (Textual)
Common stock warrants exercised							209,644
Class A Common Stock and Class B Common Stock [Member] | Subsequent Event [Member]
Equity (Textual)
Paid date of declared dividend	May 31, 2023
Record date of declared dividend	May 20, 2023
Dividends on common stock	$ 0.075

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