Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended		12 Months Ended			77 Months Ended
	Jan. 20, 2022	Aug. 09, 2021	May 18, 2021	Mar. 01, 2021	May 31, 2021	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Additional Paid in Capital							$ 1,069,573	$ 740,889		$ 740,889
Retained Earnings (Accumulated Deficit)							(15,199)	39,375		39,375
Long-term Debt, Excluding Current Maturities							514,006	$ 287,299		$ 287,299
Issuance of common stock							$ 355,978
Common stock, par value							$ 0.001	$ 0.001		$ 0.001
Stock Repurchase Program, Authorized Amount							$ 200,000
Treasury stock, shares							8,244,456	11,813,161		11,813,161
Treasury Stock, Value							$ 91,626	$ 131,287		$ 131,287
Treasury Stock, Shares Acquired							880,979			7,396,936
Treasury Stock, Value, Acquired, Cost Method							$ 11,500	11,479	$ 61,646	$ 92,800
Accumulated other comprehensive loss							(12,310)	(2,172)		(2,172)
Subsequent Event [Member] | Green Plains Partners LP [Member]
Quarterly cash distribution per unit declared	$ 0.44
Common Stock [Member]
Issuance of common stock		$ 164,900		$ 191,100			$ 15
Issuance of common stock, shares		5,462,500		8,751,500			14,214,000
Common stock, par value		$ 0.001		$ 0.001
Issuance of common stock, price per share		$ 32.00		$ 23.00
Warrants [Member]
Number of shares of common stock reserved for exercise of warrants							2,550,000
Number of common stock reserved for exercise of warrants, exercisable							2,275,000
Remaining warrants number							275,000
Remaining warrants, contingent upon certain earn-out provisions							219,445
Remaining warrants, contingent upon certain earn-out provisions, exercisable							55,555
Exercise Price							$ 22.00
Restatement Adjustment [Member]
Additional Paid in Capital								(49,500)		(49,500)
Retained Earnings (Accumulated Deficit)								11,400		11,400
Long-term Debt, Excluding Current Maturities								38,100		38,100
Debt Principal Offset								39,400		39,400
Debt Issuance Costs, Net								1,300		1,300
Deferred tax liability								$ 9,200		$ 9,200
Exercise Price One [Member] | Warrants [Member]
Number of shares of common stock reserved for exercise of warrants							275,000
Expiration Date							Dec. 08, 2025
Exercise Price Two [Member] | Warrants [Member]
Number of shares of common stock reserved for exercise of warrants							275,000
Expiration Date							Feb. 09, 2026
Exercise Price Three [Member] | Warrants [Member]
Number of shares of common stock reserved for exercise of warrants							2,000,000
Expiration Date							Apr. 28, 2026
Convertible Notes [Member] | 4.00% Convertible Notes Due 2024 [Member]
Interest rate, stated percentage								4.00%		4.00%
Corporate Activities [Member]
Debt Issuance Costs, Net							$ 1,200
Corporate Activities [Member] | Convertible Notes [Member] | 4.00% Convertible Notes Due 2024 [Member]
Debt Issuance Costs, Net							$ 1,200
Interest rate, stated percentage			4.00%			4.00%	4.00%		4.00%
Common stock for conversion, shares			3,568,705		3,568,705	64.1540
Debt conversion amount			$ 51,000		$ 51,000
Implied price per share			$ 26.80