CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Net sales	$ 3,656,163	$ 4,103,887	$ 8,300,968	$ 8,478,862
Cost of sales	2,182,547	2,696,333	5,291,959	5,788,449
Gross profit	1,473,616	1,407,554	3,009,009	2,690,413
Selling, general and administrative	739,585	910,038	1,627,763	1,714,245
Income from operations	734,031	497,516	1,381,246	976,168
Other income	6,822	1,255	7,568	1,066
Interest expense	(183,268)	(244,179)	(376,478)	(516,301)
Interest income	2	14	7	24
Total other expense, net	(176,444)	(242,910)	(368,903)	(515,211)
Income before income taxes	557,587	254,606	1,012,343	460,957
Income tax expense	11,505		20,958
Net income	546,082	254,606	991,385	460,957
Other comprehensive income, before tax:
Foreign currency translation adjustments	(281)	1,413	(1,223)	1,352
Other comprehensive income, before tax	(281)	1,413	(1,223)	1,352
Other comprehensive income, net of tax	(281)	1,413	(1,223)	1,352
Comprehensive income	$ 545,801	$ 256,019	$ 990,162	$ 462,309
Net income per share (basic) (in dollars per share)	$ 0.02	$ 0.01	$ 0.04	$ 0.02
Net income per share (diluted) (in dollars per share)	$ 0.02	$ 0.01	$ 0.04	$ 0.02
Weighted average number of shares outstanding (basic) (in shares)	27,324,593	26,113,433	27,324,593	25,460,435
Weighted average number of shares outstanding (diluted) (in shares)	28,020,795	26,257,402	27,936,098	25,503,542