Consolidated Statements of Stockholders' Deficit - USD ($)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss, Net
Common stock, shares outstanding, beginning at Dec. 31, 2019		5,918,733
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock issued		30,730
Common stock, shares outstanding, ending at Dec. 31, 2020	5,949,463	5,949,463
Beginning Balance, amount at Dec. 31, 2019	$ (14,908,149)	$ 5,919	$ 111,727,888	$ (124,748,696)	$ (1,893,260)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,082,726			1,082,726
Restricted stock issued		30	(30)
Share-based compensation	15,755		15,755
Accretion of Series A redeemable convertible preferred stock	(552,551)		(552,551)
Dividends on Series A redeemable convertible preferred stock	(1,083,892)		(1,083,892)
Foreign currency translation	(68,854)				(68,854)
Net minimum pension liability	(25,847)				(25,847)
Ending Balance, amount at Dec. 31, 2020	$ (15,540,812)	$ 5,949	110,107,170	(123,665,970)	(1,987,961)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock issued		36,063
Common stock, shares outstanding, ending at Dec. 31, 2021	7,082,276	7,082,276
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 203,332			203,332
Stock Issued During Period, Shares, New Issues	3,666,064	1,096,750
Sale of common stock in public offering, net of underwriting discounts and offering costs		$ 1,097	3,664,967
Restricted stock issued	$ 0	36	(36)
Share-based compensation	21,178		21,178
Accretion of Series A redeemable convertible preferred stock	(299,969)		(299,969)
Dividends on Series A redeemable convertible preferred stock	(1,143,697)		(1,143,697)
Foreign currency translation	114,675				114,675
Net minimum pension liability	13,246				13,246
Ending Balance, amount at Dec. 31, 2021	$ (12,965,983)	$ 7,082	$ 112,349,613	$ (123,462,638)	$ (1,860,040)