RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS, Description of Restatement Adjustments (Details) - USD ($)	3 Months Ended									6 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018		Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Description of Restatement Adjustments [Abstract]
Increase (decrease) to income tax expense for correction																$ 1,300,000
Common Stock [Abstract]
Common stock, shares issued (in shares)	10,446,563			10,354,563	10,353,155	[1]	10,336,717	10,336,717	10,336,717	10,336,717	10,336,717	10,446,563		10,353,155	[1]	10,320,069	[1]
Treasury stock, shares (in shares)	1,424,376			1,420,539	1,292,594	[1]	1,182,509	1,182,502	1,121,607	1,182,502	1,182,509	1,424,376		1,292,594	[1]	1,049,207	[1]
Increase (Decrease) in Net Income [Abstract]
Cost of sales				$ (8,696,652)			$ (6,982,380)	$ (6,953,730)	$ (7,811,518)	$ (14,765,248)	$ (21,747,628)	$ (32,958,708)		$ (32,262,624)	[1]	$ (33,334,934)	[1]
Net sales				20,941,322			18,878,263	19,187,222	20,500,578	39,687,800	58,566,063	74,918,160		83,203,569	[1]	82,420,595	[1]
Operating expenses				(10,031,653)			(10,995,989)	(10,651,386)	(10,634,923)	(21,286,309)	(32,282,298)	(43,555,826)		(44,692,265)	[1]	(42,708,942)	[1]
Impairment expense												1,001,835		285,477	[1]	0	[1]
Other expense				(109,618)			40,846	131,842	153,378	285,220	326,066	40,225		553,573	[1]	167,112	[1]
Total adjustments before tax				2,213,017			899,894	1,582,106	2,054,137	3,636,243	4,536,137	(2,598,209)		5,963,203	[1]	6,376,719	[1]
Income tax expense from adjustments				551,205			251,329	478,023	626,217	1,104,240	1,355,569	(690,463)		1,813,454	[1]	3,859,832	[1]
Net income (loss)	$ (829,473)	$ (1,718,452)	$ (875,667)	1,519,811	$ 1,115,265		608,701	1,157,743	1,516,656	2,674,399	3,283,100	(1,903,781)	[2]	4,398,365	[1]	2,478,444	[1]
Increase to Retained Earnings [Abstract]
Retained earnings	$ 62,210,781			65,634,371	64,476,378	[1]	63,361,113	62,752,412	61,594,670	62,752,412	63,361,113	$ 62,210,781		64,476,378	[1]	60,078,013	[1]
Restatement Adjustment [Member]
Common Stock [Abstract]
Common stock, shares issued (in shares)	(993,623)											(993,623)
Treasury stock, shares (in shares)	(993,623)											(993,623)
Increase (Decrease) in Net Income [Abstract]
Cost of sales				(362,805)			57,886	(894,405)	(365,562)	(1,259,967)	(1,202,081)			255,372		(3,127,495)
Net sales				156,670			(8,836)	9,455	211,660	221,115	212,279			105,382		99,327
Operating expenses				1,249,724			535,400	485,575	439,078	924,653	1,460,053			2,059,463		2,163,065
Impairment expense														285,477
Other expense				(142,659)			0	85,101	114,506	199,607	199,607			373,382		40,255
Total adjustments before tax				1,043,589			584,450	(399,375)	285,176	(114,199)	470,251			2,134,740		(865,103)
Income tax expense from adjustments				250,082			(145,785)	(31,925)	156,645	124,720	(21,065)			73,585		1,148,459
Net income (loss)				650,848			730,235	(282,349)	243,037	(39,312)	690,923			2,434,537		(1,973,307)
Increase to Retained Earnings [Abstract]
Retained earnings				$ (554,243)	(1,240,383)		$ (2,983,997)	$ (3,714,232)	$ (3,431,882)	$ (3,714,232)	$ (2,983,997)			(1,240,383)		(3,843,231)
Restatement Adjustment [Member] | Inventory adjustments [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														255,372		(3,127,495)
Restatement Adjustment [Member] | FIFO Adjustment [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														843,598		(88,548)
Increase to Retained Earnings [Abstract]
Retained earnings					(786,690)									(786,690)
Restatement Adjustment [Member] | Freight-in, Warehousing and Handling Expenditures, Factory Labor and Overhead, and Freight-out [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														503,078		(619,172)
Increase to Retained Earnings [Abstract]
Retained earnings					(442,150)									(442,150)
Restatement Adjustment [Member] | Inventor Reserve [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														980,000		0
Increase to Retained Earnings [Abstract]
Retained earnings					980,000									980,000
Restatement Adjustment [Member] | Warehouse and Handling Reclass [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														(2,195,119)		(2,175,881)
Operating expenses														2,195,119		2,175,881
Restatement Adjustment [Member] | Sales Returns, Gift Cards and Class Fees [Member]
Increase (Decrease) in Net Income [Abstract]
Net sales														105,382		99,327
Restatement Adjustment [Member] | Sales Returns [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														104,105		(19,999)
Increase to Retained Earnings [Abstract]
Retained earnings					(172,494)									(172,494)
Restatement Adjustment [Member] | Operating Expenses [Member]
Increase (Decrease) in Net Income [Abstract]
Operating expenses														2,059,463		2,163,065
Impairment expense														(285,477)		0
Other expense														373,382		40,255
Restatement Adjustment [Member] | Reclass to Impairment Expense [Member]
Increase (Decrease) in Net Income [Abstract]
Operating expenses														285,477		0
Restatement Adjustment [Member] | Accrued Expenses [Member]
Increase (Decrease) in Net Income [Abstract]
Operating expenses														(377,912)		51,375
Restatement Adjustment [Member] | PTO Accrual [Member]
Increase (Decrease) in Net Income [Abstract]
Operating expenses														(16,930)		(38,647)
Restatement Adjustment [Member] | Adjustments Before Tax [Member]
Increase (Decrease) in Net Income [Abstract]
Total adjustments before tax														2,508,122		(824,848)
Restatement Adjustment [Member] | Income Tax Expense (Benefit) From Adjustments [Member]
Increase (Decrease) in Net Income [Abstract]
Income tax expense from adjustments														73,585		1,148,459
Increase to Retained Earnings [Abstract]
Retained earnings					33,823									33,823
Restatement Adjustment [Member] | Other [Member]
Increase (Decrease) in Net Income [Abstract]
Cost of sales														19,710		(223,895)
Operating expenses														(26,291)		(25,544)
Restatement Adjustment [Member] | Accruals and Other [Member]
Increase to Retained Earnings [Abstract]
Retained earnings					$ (852,872)									(852,872)
Restatement Adjustment [Member] | Restatement Income Taxes [Member]
Description of Restatement Adjustments [Abstract]
Increase (decrease) to income tax expense														600,000		(200,000)
Increase (decrease) to income tax expense for correction														(500,000)		1,300,000
Increase (decrease) to income tax expense for correction of smaller adjustments														(400,000)		(900,000)
Increase (decrease) to income tax expense for correction of income earned from wholly-owned foreign subsidiaries														$ (100,000)		(200,000)
Interest expense related to other corrections																$ (200,000)

[1] As described in Note 2 to these Consolidated Financial Statements, we have restated the Consolidated Financial Statements.

[2] For the year ended December 31, 2019, there were 9,203 shares excluded from the diluted EPS calculation because the impact of their assumed vesting would be anti-dilutive due to a net loss in that period.