CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($)	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Statement of Cash Flows [Abstract]
Purchase of equity method investment	$ 350,000	$ 350,000

The amount of purchase of equity method investment.

No definition available.

Name:	SIEB_PurchaseOfEquityMethodInvestment
Namespace Prefix:	SIEB_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration