11. Impairment of Fixed Assets (Details Narrative) (USD $)	Jun. 30, 2012
Impairment Of Fixed Assets Details Narrative
Write off remaining unamortized carrying value of development costs	$ 433,000

Write off remaining unamortized carrying value of development costs.

No definition available.

Name:	SIEB_WriteOffRemainingUnamortizedCarryingValueOfDevelopmentCosts
Namespace Prefix:	SIEB_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant