Accounts Receivable (Details Textual)	9 Months Ended
Sep. 30, 2020
Receivables [Abstract]
Percentage of late fee on past due receivables	1.50%

The percentage of late fee per month charged by the company on past due receivables.

No definition available.

Name:	sdsp_PercentageOfLateFeeOnPastDueReceivables
Namespace Prefix:	sdsp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration