Equity Incentive Plans (Details)	Sep. 30, 2012
Option Approval	18,575,000
Options Outstanding	13,100,508
Options Available For Future Grant	2,117,957
Options Outstanding and Options Available, Total	15,218,465
Amended and Restated Stock Option Plan 2002 [Member]
Option Approval	3,200,000
Options Outstanding	2,753,710
Options Available For Future Grant	446,290
Options Outstanding and Options Available, Total	3,200,000
Stock Option Plan 2006 [Member]
Option Approval	2,500,000
Options Outstanding	2,149,000
Options Available For Future Grant	351,000
Options Outstanding and Options Available, Total	2,500,000
Stock Option Plan 2009 [Member]
Option Approval	1,500,000
Options Outstanding	1,179,333
Options Available For Future Grant	320,667
Options Outstanding and Options Available, Total	1,500,000
Stock Option Plan 2010 [Member]
Option Approval	3,500,000
Options Outstanding	2,500,000
Options Available For Future Grant	1,000,000
Options Outstanding and Options Available, Total	3,500,000
Key Personnel Option Grants [Member]
Option Approval	7,875,000
Options Outstanding	4,518,465
Options Available For Future Grant	0
Options Outstanding and Options Available, Total	4,518,465
Board Of Directors [Member]
Option Approval	7,875,000
Board Of Directors [Member] | Amended and Restated Stock Option Plan 2002 [Member]
Option Approval	0
Board Of Directors [Member] | Stock Option Plan 2006 [Member]
Option Approval	0
Board Of Directors [Member] | Stock Option Plan 2009 [Member]
Option Approval	0
Board Of Directors [Member] | Stock Option Plan 2010 [Member]
Option Approval	0
Board Of Directors [Member] | Key Personnel Option Grants [Member]
Option Approval	7,875,000
Board Of Directors and Shareholders [Member]
Option Approval	10,700,000
Board Of Directors and Shareholders [Member] | Amended and Restated Stock Option Plan 2002 [Member]
Option Approval	3,200,000
Board Of Directors and Shareholders [Member] | Stock Option Plan 2006 [Member]
Option Approval	2,500,000
Board Of Directors and Shareholders [Member] | Stock Option Plan 2009 [Member]
Option Approval	1,500,000
Board Of Directors and Shareholders [Member] | Stock Option Plan 2010 [Member]
Option Approval	3,500,000
Board Of Directors and Shareholders [Member] | Key Personnel Option Grants [Member]
Option Approval	0