Restatement Correction for Fair Value Option Election (Narrative) (Details)	3 Months Ended
Mar. 31, 2021 USD ($)
Accounting Changes and Error Corrections [Abstract]
Increase in fair value of convertible promissory note	$ 152,197

Increase in the fair value of the convertible promissory note.

No definition available.

Name:	susg_IncreaseInFairValueOfConvertiblePromissoryNote
Namespace Prefix:	susg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration