Summary of Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($)	3 Months Ended	6 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Sales	$ 20,081,842	$ 24,304,945	$ 24,890,882	$ 26,141,456
Classic Karaoke Machines [Member]
Net Sales	11,737,193	15,496,872	15,893,233	16,507,383
Download Karaoke Machines [Member]
Net Sales	4,005,488	5,792,683	4,146,488	6,003,683
SMC Kids Toys [Member]
Net Sales	418,716	1,466,087	558,716	1,593,087
Music and Accessories [Member]
Net Sales	$ 3,920,445	$ 1,549,303	$ 4,292,445	$ 2,037,303

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration