Condensed Consolidated Statements of Changes in Stockholders' Equity (Deficit) (Unaudited) - USD ($)	October 2024 Reverse Stock Split [Member] Preferred Stock [Member]	October 2024 Reverse Stock Split [Member] Common Stock [Member]	October 2024 Reverse Stock Split [Member] Additional Paid-in Capital [Member]	October 2024 Reverse Stock Split [Member] AOCI Attributable to Parent [Member]	October 2024 Reverse Stock Split [Member] Retained Earnings [Member]	October 2024 Reverse Stock Split [Member]	February 2024 Reverse Stock Split [Member] Preferred Stock [Member]	February 2024 Reverse Stock Split [Member] Common Stock [Member]	February 2024 Reverse Stock Split [Member] Additional Paid-in Capital [Member]	February 2024 Reverse Stock Split [Member] AOCI Attributable to Parent [Member]	February 2024 Reverse Stock Split [Member] Retained Earnings [Member]	February 2024 Reverse Stock Split [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member] Preferred Stock [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member] Common Stock [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member] Additional Paid-in Capital [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member] AOCI Attributable to Parent [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member] Retained Earnings [Member]	Conversions of Series F Preferred Stock Into Common Stock [Member]	Series A Warrants [Member] Preferred Stock [Member]	Series A Warrants [Member] Common Stock [Member]	Series A Warrants [Member] Additional Paid-in Capital [Member]	Series A Warrants [Member] AOCI Attributable to Parent [Member]	Series A Warrants [Member] Retained Earnings [Member]	Series A Warrants [Member]	Series B Warrants [Member] Preferred Stock [Member]	Series B Warrants [Member] Common Stock [Member]	Series B Warrants [Member] Additional Paid-in Capital [Member]	Series B Warrants [Member] AOCI Attributable to Parent [Member]	Series B Warrants [Member] Retained Earnings [Member]	Series B Warrants [Member]	Series F Warrants [Member] Preferred Stock [Member]	Series F Warrants [Member] Common Stock [Member]	Series F Warrants [Member] Additional Paid-in Capital [Member]	Series F Warrants [Member] AOCI Attributable to Parent [Member]	Series F Warrants [Member] Retained Earnings [Member]	Series F Warrants [Member]	Conversion of Convertible Note Into Common Stock [Member] Preferred Stock [Member]	Conversion of Convertible Note Into Common Stock [Member] Common Stock [Member]	Conversion of Convertible Note Into Common Stock [Member] Additional Paid-in Capital [Member]	Conversion of Convertible Note Into Common Stock [Member] AOCI Attributable to Parent [Member]	Conversion of Convertible Note Into Common Stock [Member] Retained Earnings [Member]	Conversion of Convertible Note Into Common Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2023																																											6,075	140,520,163
Balance at Dec. 31, 2023																																											$ 6	$ 140,521	$ 176,033,817	$ 106,303	$ (165,583,091)	$ 10,697,556
Shares issued (in shares)																																											4,100	0
Issuance of Series F Preferred Stock and warrants, net of issuance costs																																											$ 4	$ 0	4,024,996	0	0	4,025,000
Converted (in shares)													(6,475)					(6,475)
Conversions to common stock													$ (6)		$ (181)
Conversions to common stock (in shares)														187,009																							0	1,597
Conversions to common stock														$ 187		$ 0	$ 0	$ 0																			$ 0	$ 2	$ 99,998	$ 0	$ 0	$ 100,000
Dividends on Series F Preferred Stock																																											$ 0	$ 0	(158,862)	0	0	(158,862)
Stock issued for warrant exercise (in shares)																																				16,590							0	16,590
Warrants exercised																																											$ 0	$ 17	497,684	0	0	497,701
Stock-based compensation expense																																											$ 0	$ 0	63,791	0	0	$ 63,791
Issuance of Restricted Common Stock (in shares)																																											0	687				687
Issuance of Restricted Common Stock																																											$ 0	$ 1	(1)	0	0	$ 0
Conversion of Convertible Note accrued interest into Common Stock (in shares)																																										1,597
Conversion of Promissory Note and accrued interest to shares of Common Stock																																																0
Deemed dividends on Series F Preferred Stock and Series F Warrants																																											0	0	6,707,687	0	(6,707,687)	0
Amended Series B warrants reclassified to stockholders' equity																																																0
Issuance costs for sale of preferred stock																																											0	0	(373,210)	0	0	(373,210)
Amortization of unrecognized periodic pension costs																																																0
Foreign currency cumulative translation adjustment																																											0	0	0	(12,146)	0	(12,146)
Net income (loss)																																											$ 0	$ 0	0	0	(12,705,049)	(12,705,049)
Balance (in shares) at Sep. 30, 2024																																											3,700	346,409
Balance at Sep. 30, 2024																																											$ 4	$ 347	191,134,488	94,157	(184,995,827)	6,233,169
Effect on existing shares due to Reverse Split (in shares)		(6,885,773)					0	(133,493,864)
Effect on existing shares due to Reverse Split		$ (6,886)	$ 6,886	$ 0	$ 0	$ 0	$ 0	$ (133,495)	$ 133,495	$ 0	$ 0	$ 0
Reduction of Conversion Price on Convertible note																																											$ 0	$ 0	4,098,388	0	0	4,098,388
Balance (in shares) at Jun. 30, 2024																																											4,295	13,838,705
Balance at Jun. 30, 2024																																											$ 4	$ 13,840	188,192,663	(46,192)	(180,085,841)	8,074,474
Shares issued (in shares)																																											1,000	0
Issuance of Series F Preferred Stock and warrants, net of issuance costs																																											$ 1	$ 0	999,999	0	0	1,000,000
Converted (in shares)													(1,595)					(1,595)
Conversions to common stock													$ (1)		(69)
Conversions to common stock (in shares)														69,635
Conversions to common stock														$ 70		0	0	$ 0
Dividends on Series F Preferred Stock																																											0	0	(47,879)	0	0	(47,879)
Stock-based compensation expense																																											0	0	16,675	0	0	$ 16,675
Issuance of Restricted Common Stock (in shares)																																																0
Conversion of Convertible Note accrued interest into Common Stock (in shares)																																										0
Deemed dividends on Series F Preferred Stock and Series F Warrants																																											0	0	1,450,232	0	(1,450,232)	$ 0
Issuance costs for sale of preferred stock																																											0	0	(100,233)	0	0	(100,233)
Amortization of unrecognized periodic pension costs																																																0
Foreign currency cumulative translation adjustment																																											0	0	0	140,349	0	140,349
Net income (loss)																																											$ 0	$ 0	0	0	(3,459,754)	(3,459,754)
Balance (in shares) at Sep. 30, 2024																																											3,700	346,409
Balance at Sep. 30, 2024																																											$ 4	$ 347	191,134,488	94,157	(184,995,827)	6,233,169
Effect on existing shares due to Reverse Split (in shares)	0	(13,561,931)
Effect on existing shares due to Reverse Split	$ 0	$ (13,563)	$ 13,563	$ 0	$ 0	$ 0
Reduction of Conversion Price on Convertible note																																											$ 0	$ 0	609,537	0	0	609,537
Balance (in shares) at Dec. 31, 2024																																											5,935	9,661,664
Balance at Dec. 31, 2024																																											$ 6	$ 9,662	212,715,967	(86,376)	(218,381,218)	(5,741,959)
Shares issued (in shares)																																											8,800	0
Issuance of Series F Preferred Stock and warrants, net of issuance costs																																											$ 9	$ 0	8,799,991	0	0	8,800,000
Converted (in shares)													(12,038)					(12,038)
Conversions to common stock													$ (12)		(11,489)
Conversions to common stock (in shares)														11,501,461
Conversions to common stock														$ 11,501		0	0	$ 0
Warrants exchanged for common stock (in shares)																																											0	148,908
Series F Warrants exchanged for shares of common stock																																											$ 0	$ 149	(149)	0	0	0
Dividends on Series F Preferred Stock																																											0	0	(155,800)	0	0	(155,800)
Stock issued for warrant exercise (in shares)																			0	63,017				63,017	0	10,089,612				10,089,612	0	3,622,918				3,622,918
Warrants exercised																			$ 0	$ 63	$ (63)			$ 0	$ 0	$ 10,090	$ 8,656,912	$ 0	$ 0	$ 8,667,002	$ 0	$ 3,623	$ 3,800,695	$ 0	$ 0	$ 3,804,318
Stock-based compensation expense																																											$ 0	$ 0	311,690	0	0	$ 311,690
Issuance of Restricted Common Stock (in shares)																																											0	156,615				156,615
Issuance of Restricted Common Stock																																											$ 0	$ 157	(157)	0	0	$ 0
Conversion of Convertible Note accrued interest into Common Stock (in shares)																																										1,490,495	0	1,490,495
Conversion of Promissory Note and accrued interest to shares of Common Stock																																											$ 0	$ 1,490	1,424,116	0	0	1,425,606
Deemed dividends on Series F Preferred Stock and Series F Warrants																																											0	0	4,942,669	0	(4,942,669)	0
Debt extinguishment loss on substantial modification to convertible debt																																											0	0	125,242	0	0	125,242
Amended Series B warrants reclassified to stockholders' equity																									$ 0	$ 0	7,766,000			$ 7,766,000																		7,766,000
Issuance costs for sale of preferred stock																																											0	0	(146,971)			(146,971)
Amortization of unrecognized periodic pension costs																																											0	0	0	100,188	0	100,188
Foreign currency cumulative translation adjustment																																											0	0	0	216,425	0	216,425
Net income (loss)																																											$ 0	$ 0	0		3,164,500	3,164,500
Balance (in shares) at Sep. 30, 2025																																											2,697	36,734,690
Balance at Sep. 30, 2025																																											$ 3	$ 36,735	248,228,653	230,237	(220,159,387)	28,336,241
Balance (in shares) at Jun. 30, 2025																																											2,675	21,802,649
Balance at Jun. 30, 2025																																											$ 3	$ 21,803	233,381,747	212,802	(217,335,698)	16,280,657
Shares issued (in shares)																																											4,300	0
Issuance of Series F Preferred Stock and warrants, net of issuance costs																																											$ 4	$ 0	4,299,996	0	0	4,300,000
Converted (in shares)													(4,278)					(4,278)
Conversions to common stock													$ (4)		$ (3,225)
Conversions to common stock (in shares)														3,228,799
Conversions to common stock														$ 3,229		$ 0	$ 0	$ 0
Warrants exchanged for common stock (in shares)																																											0	60,000
Series F Warrants exchanged for shares of common stock																																											$ 0	$ 60	(60)	0	0	0
Dividends on Series F Preferred Stock																																											0	0	(36,111)	0	0	(36,111)
Stock issued for warrant exercise (in shares)																			0	63,017					0	7,868,924				7,868,924	0	3,622,918				3,622,918
Warrants exercised																			$ 0	$ 63	$ (63)	$ 0	$ 0	$ 0	$ 0	$ 7,869	6,518,616	0	0	$ 6,526,485	$ 0	$ 3,623	$ 3,800,695	$ 0	$ 0	$ 3,804,318
Stock-based compensation expense																																											$ 0	$ 0	149,979	0	0	$ 149,979
Issuance of Restricted Common Stock (in shares)																																											0	78,000				78,000
Issuance of Restricted Common Stock																																											$ 0	$ 78	(78)	0	0	$ 0
Conversion of Convertible Note accrued interest into Common Stock (in shares)																																										10,383	0	10,383
Conversion of Promissory Note and accrued interest to shares of Common Stock																																											$ 0	$ 10	8,602	0	0	8,612
Deemed dividends on Series F Preferred Stock and Series F Warrants																																											0	0	208,526	0	(208,526)	0
Debt extinguishment loss on substantial modification to convertible debt																																											0	0	0	0	0	0
Amended Series B warrants reclassified to stockholders' equity																									$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Issuance costs for sale of preferred stock																																											0	0	(99,971)	0	0	(99,971)
Amortization of unrecognized periodic pension costs																																											0	0	0	(7,377)	0	(7,377)
Foreign currency cumulative translation adjustment																																											0	0	0	24,812	0	24,812
Net income (loss)																																											$ 0	$ 0	0	0	(2,615,163)	(2,615,163)
Balance (in shares) at Sep. 30, 2025																																											2,697	36,734,690
Balance at Sep. 30, 2025																																											$ 3	$ 36,735	$ 248,228,653	$ 230,237	$ (220,159,387)	$ 28,336,241