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Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination.

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Amount of liability recognized arising from contingent consideration in a business combination.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Fair Value of Financial Instruments (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Liabilities, Fair Value Disclosure [Abstract]
Warrant liability	$ 28,195		$ 6,265
Contingent consideration	10,527,910
Total	13,042,948
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Outstanding as at beginning	0
Initial recognition in connection with acquisition of Harper & Jones	3,421,516
Stock price guarantee per consulting agreement	67,000
Change in fair value	7,039,394
Outstanding as of September 30, 2021	10,527,910		0
Warrant Liability
Outstanding as of December 31, 2020	6,265	$ 7,700	7,700
Warrants granted			918	$ 7,700
Change in fair value	21,930	$ (1,792)	(2,353)
Outstanding as of September 30, 2021	28,195		6,265	$ 7,700
Level 2
Liabilities, Fair Value Disclosure [Abstract]
Warrant liability	28,195
Total	28,195
Level 3
Liabilities, Fair Value Disclosure [Abstract]
Warrant liability			$ 6,265
Contingent consideration	10,527,910
Total	$ 13,014,753