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Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2019 | Mar. 31, 2018
Net Sales | $ 889,000 | $ 19,452,000 | $ 24,305,000 | $ 1,837,000 | $ 2,604,000 | $ 21,462,000 | $ 32,802,000 | $ 3,940,000 | $ 46,482,998 | $ 60,808,050
Classic Karaoke Machines [Member] |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 25,100,000 | 38,800,000
Download Karaoke Machines [Member] |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 13,000,000 | 14,100,000
SMC Kids Toys [Member] |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | 4,200,000 | 4,600,000
Music and Accessories [Member] |  |  |  |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  |  |  | $ 4,200,000 | $ 3,300,000

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- Definition 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. + References 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 + Details
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