General form of registration statement for all companies including face-amount certificate companies

Summary of Significant Accounting Policies - Summary of Significant Customers and Vendors (Details) (Sounds Concept, Inc.)

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Summary of Significant Accounting Policies - Summary of Significant Customers and Vendors (Details) (Sounds Concept, Inc.) - Sound Concepts, Inc. [Member]
 11 Months Ended 12 Months Ended
Nov. 30, 2018
Nov. 30, 2017
Dec. 31, 2017
Dec. 31, 2016
Customers [Member]        
Revenue 12% and 11% of revenue, or 23% of revenue in the aggregate 17%, 16% and 11% of revenue, or 44% of revenue in the aggregate 17%, 17% and 11% of revenue, or 45% of revenue in the aggregate 38% and 12% of revenue, or 50% of revenue in the aggregate
Accounts receivable 13% and 15% of accounts receivable, or 28% of accounts receivable in the aggregate 13% and 11% of accounts receivable, or 24% of accounts receivable in the aggregate 24%, 13% and 13% of accounts receivable, or 50% of accounts receivable in the aggregate 38% and 10% of accounts receivable, or 48% of accounts receivable in the aggregate
Vendors [Member]        
Purchase 11% of purchase from one vendor None over 10% None over 10% 15% of purchase from one vendor
Accounts payable 13% and 12% of accounts payable, or 25% of accounts payable in the aggregate 12% and 11% of of accounts payable, or 23% of accounts payable in the aggregate 14% of accounts payable to one vendor 21%, 16% and 11% of accounts payable, or 48% of accounts payable in the aggregate