RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS, Consolidated Statements of Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended						6 Months Ended
	Jun. 30, 2019		Mar. 31, 2019	Jun. 30, 2018		Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 17,196,815			$ 19,187,222	[1]		$ 38,138,137	$ 39,687,800	[1]
Cost of sales	7,826,369			6,953,730	[1]		16,523,021	14,765,248	[1]
Gross profit	9,370,446			12,233,492	[1]		21,615,116	24,922,552	[1]
Operating expenses	10,617,824			10,651,386	[1]		20,649,477	21,286,309	[1]
Income (loss) from operations	(1,247,378)			1,582,106	[1]		965,639	3,636,243	[1]
Other (income) expense [Abstract]
Interest expense	0			78,182	[1]		32,383	142,824	[1]
Other, net	(54,125)			(131,842)	[1]		55,493	(285,220)	[1]
Total other (income) expense	(54,125)			(53,660)	[1]		87,876	(142,396)	[1]
Income (loss) before income taxes	(1,193,253)			1,635,766	[1]		877,763	3,778,639	[1]
Provision (benefit) for income taxes	(317,586)			478,023	[1]		233,619	1,104,240	[1]
Net income (loss)	(875,667)	[2]	$ 1,519,811	1,157,743	[1]	$ 1,516,656	644,144	2,674,399	[1]
Foreign currency translation adjustments, net of tax	87,333		$ 314,493	(284,774)	[1]	$ (58,992)	401,826	(343,766)	[1]
Comprehensive income (loss)	$ (788,334)			$ 872,969	[1]		$ 1,045,970	$ 2,330,633	[1]
Net income (loss) per common share [Abstract]
Basic (in dollars per share)	$ (0.10)			$ 0.13	[1]		$ 0.07	$ 0.29	[1]
Diluted (in dollars per share)	$ (0.10)			$ 0.13	[1]		$ 0.07	$ 0.29	[1]
Weighted average number of shares outstanding [Abstract]
Basic (in shares)	8,933,648	[2]		9,180,076	[1]		8,971,490	9,222,028	[1]
Diluted (in shares)	8,933,648	[2]		9,182,527	[1]		8,975,000	9,223,086	[1]
As Reported [Member]
Income Statement [Abstract]
Net sales				$ 19,177,767				$ 39,466,685
Cost of sales				6,059,325				13,505,281
Gross profit				13,118,442				25,961,404
Operating expenses				11,136,961				22,210,962
Income (loss) from operations				1,981,481				3,750,442
Other (income) expense [Abstract]
Interest expense				78,182				142,824
Other, net				(46,741)				(85,613)
Total other (income) expense				31,441				57,211
Income (loss) before income taxes				1,950,040				3,693,231
Provision (benefit) for income taxes				509,948				979,520
Net income (loss)				1,440,092				2,713,711
Foreign currency translation adjustments, net of tax				(294,598)				(272,807)
Comprehensive income (loss)				$ 1,145,494				$ 2,440,904
Net income (loss) per common share [Abstract]
Basic (in dollars per share)				$ 0.15				$ 0.29
Diluted (in dollars per share)				$ 0.15				$ 0.29
Weighted average number of shares outstanding [Abstract]
Basic (in shares)				9,180,076				9,222,028
Diluted (in shares)				9,180,727				9,222,533
Adjustments [Member]
Income Statement [Abstract]
Net sales				$ 9,455				$ 221,115
Cost of sales				894,405				1,259,967
Gross profit				(884,950)				(1,038,852)
Operating expenses				(485,575)				(924,653)
Income (loss) from operations				(399,375)				(114,199)
Other (income) expense [Abstract]
Interest expense				0				0
Other, net				(85,101)				(199,607)
Total other (income) expense				(85,101)				(199,607)
Income (loss) before income taxes				(314,274)				85,408
Provision (benefit) for income taxes				(31,925)				124,720
Net income (loss)				(282,349)				(39,312)
Foreign currency translation adjustments, net of tax				9,824				(70,959)
Comprehensive income (loss)				$ (272,525)				$ (110,271)
Net income (loss) per common share [Abstract]
Basic (in dollars per share)				$ (0.02)				$ 0.01
Diluted (in dollars per share)				$ (0.02)				$ 0.01
Weighted average number of shares outstanding [Abstract]
Basic (in shares)				9,180,076				9,222,028
Diluted (in shares)				9,182,527				9,223,086

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

[2] For the three months ended June 30, 2019, there were 2,290 shares excluded from the diluted EPS calculation because the impact of their assumed vesting would be anti-dilutive due to a net loss in those periods.