Green Plains Partners LP (Narrative) (Details) gal in Billions		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019 item shares gal
Subsidiary, Sale of Stock [Line Items]
Number Of Ethanol Storage Facilities		32
Number Of Ethanol Plants		13
Number Of Fuel Terminal Facilities		7
Number of non-operational ethanol plant		1
Number Of Leased Railcars		2,630
Parent Company [Member]
Subsidiary, Sale of Stock [Line Items]
Number of gallons of ethanol produced per year | gal		1.1
Limited Partner [Member] | IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Ownership interest, percentage		49.00%
Ownership interest, public, percentage		49.00%
Limited Partner [Member] | IPO [Member] | Parent Company [Member]
Subsidiary, Sale of Stock [Line Items]
Ownership interest, percentage	49.00%	49.00%
Limited Partner [Member] | Common Stock [Member] | IPO [Member] | Parent Company [Member]
Subsidiary, Sale of Stock [Line Items]
Number of units issued as part of the transaction | shares		11,586,548
General Partner [Member] | IPO [Member] | Parent Company [Member]
Subsidiary, Sale of Stock [Line Items]
Ownership interest, percentage	2.00%	2.00%
Green Plains Partners LP [Member] | IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Ethanol storage and throughput agreement		10 years
Rail transportation services agreement		10 years
Trucking transportation agreement		1 year