QUARTERLY FINANCIAL DATA (UNAUDITED) (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	[1]	Dec. 31, 2017	[1]
Selected quarterly financial data [Abstract]
Net sales	$ 20,469,136		$ 16,310,887		$ 17,196,815		$ 20,941,322		$ 24,637,506	$ 18,878,263	$ 19,187,222	$ 20,500,578
Gross Profit	11,495,688		8,848,648		9,370,446		12,244,670		14,122,510	11,895,883	12,233,492	12,689,060	$ 24,922,552	$ 36,818,435	$ 41,959,452		$ 50,940,945		$ 49,085,661
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		$ 2,478,444
Net income (loss) per common share [Abstract]
Basic (in dollars per share)	$ (0.09)		$ (0.19)		$ (0.10)		$ 0.17		$ 0.12	$ 0.07	$ 0.13	$ 0.16	$ 0.29	$ 0.36	$ (0.21)		$ 0.48		$ 0.27
Diluted (in dollars per share)	$ (0.09)	[3]	$ (0.19)	[3]	$ (0.10)	[3]	$ 0.17	[3]	$ 0.12	$ 0.07	$ 0.13	$ 0.16	$ 0.29	$ 0.36	$ (0.21)		$ 0.48		$ 0.27
Weighted average number of common shares outstanding [Abstract]
Basic (in shares)	9,020,187		8,932,246		8,933,648		9,009,752		9,143,746	9,154,215	9,180,076	9,264,446	9,222,028	9,199,173	8,973,246	[2]	9,185,203		9,242,092
Diluted (in shares)	9,020,187		8,932,246		8,933,648		9,011,107		9,144,020	9,160,022	9,182,527	9,264,604	9,223,086	9,201,577	8,973,246	[2]	9,205,008		9,245,537
Shares excluded from diluted EPS (in shares)	8,387		2,704		2,290

[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.

[3] For the three months ended June 30, 2019, September 31, 2019 and December 31, 2019, there were 2,290, 2,704 and 8,387 shares, respectively, excluded from the diluted EPS calculation because the impact of their assumed exercise would be anti-dilutive due to a net loss in those periods.