| Component: (Network and Table) | |
|---|---|
| Network | 00400 - Statement - Statements of Cash Flows (http://www.granitefallsenergy.com/role/StatementStatementsOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0001181749 (http://www.sec.gov/CIK) | 
| Statement of Cash Flows [Abstract] | Period [Axis] | ||
|---|---|---|---|
2015-11-01 - 2016-10-31  | 2014-11-01 - 2015-10-31  | 2013-11-01 - 2014-10-31  | |
Statement of Cash Flows [Abstract]  | |||
Cash Flows from Operating Activities  | |||
Net income  | 11,228,262    | 16,946,833    | 59,090,503    | 
Adjustments to reconcile net income to net cash provided by operations:  | |||
Depreciation and amortization  | |||
Change in fair value of commodity derivative instruments  | (  | (  | (  | 
Loss on sale of equipment and other  | |||
Settlement of debt premium  | (953,086)   | ||
Change in operating assets and liabilities  | |||
Restricted cash  | (  | ||
Commodity derivative instruments  | (  | ||
Accounts receivable  | (  | (  | |
Inventory  | (  | (  | |
Prepaid expenses and other current assets  | (  | ||
Accounts payable  | (  | ||
Accrued expenses  | |||
Net Cash Provided by Operating Activities  | |||
Cash Flows from Investing Activities  | |||
Payments for capital expenditures  | (  | (  | (  | 
Proceeds from sale or disposal of assets  | |||
Net Cash Used in Investing Activities  | (  | (  | (  | 
Cash Flows from Financing Activities  | |||
Proceeds from long-term debt  | |||
Payments on long-term debt  | (  | (  | (  | 
Issuance of (payments on) subsidiary convertible subordinated debt  | |||
Proceeds from checks drawn in excess of bank balance  | |||
Distributions to non-controlling interests  | (  | (  | |
Member distributions paid  | (  | (  | (  | 
Net Cash Used in Financing Activities  | (  | (  | (  | 
Net Increase (Decrease) in Cash  | (  | ||
Cash - Beginning of Period  | 12,696,536    | ||
Cash - End of Period  | 13,797,857    | 12,696,536    | 27,209,010    | 
Supplemental Cash Flow Information  | |||
Cash paid during the period for:  | |||
Interest Expense  | |||
Supplemental Disclosure of Noncash Investing, Operating and Financing Activities  | |||
Conversion of subsidiary subordinated convertible notes  | |||
Cancellation of accrued distribution to noncontrolling interest  | 84,807    | ||
Capital expenditures and construction in process included in accounts payable  | |||