Notes Payable (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2011	Apr. 30, 2011
Notes Payable	$ 759	$ 2,197	$ 1,712	$ 400
Convertible Note Payable Due To Tatum 1 [Member]
Notes Payable		28	28
Convertible Note Payable To Value Corp Inc 1 [Member]
Notes Payable		10	8
Convertible Note Payable Due To Ron Tate 1 [Member]
Notes Payable		31
Convertible Note Payable To James Rodgers 1 [Member]
Notes Payable		108
Convertible Note Payable To Gregory Qualls 1 [Member]
Notes Payable		17
Related Party Convertible Note Payable To Ray Purdon 1 [Member]
Notes Payable		86	86
Related Party Convertible Note Payable To Ray Purdon 2 [Member]
Notes Payable			80
Related Party Convertible Note Payable To Ray Purdon 3 [Member]
Notes Payable		53	53
Related Party Convertible Note Payable To Ray Purdon 4 [Member]
Notes Payable		248	348
Related Party Convertible Note Payable To Ray Purdon 5 [Member]
Notes Payable			151
Related Party Convertible Note Payable To Ray Purdon 6 [Member]
Notes Payable		25	25
Related Party Convertible Promissory Note Payable To Saratoga Capital Partners Llc 1 [Member]
Notes Payable		400	400
Related Party Convertible Promissory Note Payable To Saratoga Capital Partners Llc2 [Member]
Notes Payable		13
Related Party Convertible Note Payable To Ron Tate and Hailey Hollenbeck [Member]
Notes Payable		14
Related Party Convertible Convertible Note Payable To Otto Law Group 1 [Member]
Notes Payable		63
Related Party Promissory Notes Note payable to Baer (formerly Sausalito) 1
Notes Payable		106	106
Related Party Promissory Notes Promissory Note Payable To Grandview Capital 1 [Member]
Notes Payable		15	15
Related Party Promissory Notes Promissory Note Payable To Otto Capital Llc 1 [Member]
Notes Payable		15	15
Related Party Promissory Notes Promissory Note Payable To David M Otto 1 [Member]
Notes Payable		20	20
Related Party Promissory Notes Promissory Note Payable To Otto Capital Llc 2 [Member]
Notes Payable		1	1
Related Party Promissory Notes Promissory Note Payable To David M Otto 2 [Member]
Notes Payable		7	7
Related Party Promissory Notes Promissory Note Payable To Otto Capital Llc 3 [Member]
Notes Payable		2	2
Related Party Promissory Notes Promissory Note Payable To Martin Davis Law Group Pllc 1 [Member]
Notes Payable		289	289
Related Party Promissory Notes Note Payable To Saratoga Capital Partners Llc 1 [Member]
Notes Payable		3	3
Note Payable To Sausalito Capital Partners I Llc 1 [Member]
Notes Payable		400
Note Payable To Jack Walkley 1 [Member]
Notes Payable		25	0
Note Payable To Otto Capital Llc 1 [Member]
Notes Payable		4
Note Payable To Otto Capital Llc 2 [Member]
Notes Payable		4
Note Payable To Otto Capital Llc 3 [Member]
Notes Payable		4
Note Payable To Jack Walkley 2 [Member]
Notes Payable		25	0
Note Payable To Peter Cangany 1 [Member]
Notes Payable		3
Note Payable To Mark Cagany [Member]
Notes Payable		100
Convertible Note Payable To Value Corp, Inc 2 [Member]
Notes Payable		1
Note Payable To Otto Capital Llc 4 [Member]
Notes Payable		3
Related Party Promissory Notes Note Payable To Saratoga Capital Partners Llc 2 [Member]
Notes Payable		10	10
Related Party Promissory Notes Note Payable To Saratoga Capital Partners Llc 3 [Member]
Notes Payable		5	5
Promissory Note Payable To David M. Otto 1 [Member]
Notes Payable		8	8
Related Party Promissory Note Payable To Saratoga Capital Partners Llc [Member]
Notes Payable		15	10
Related Party Promissory Note Payable To Laurence Shelver [Member]
Notes Payable		53	42
Related Party Promissory Note Payable To Laurence Shelver1 [Member]
Notes Payable		$ 10

GeoBio Energy, Inc. 10-K