Share-Based Compensation (Details Textual)	9 Months Ended
	Jun. 30, 2012
Share-based Compensation (Textual) [Abstract]
Share-based compensation number of plans maintained	3
2001 Plan [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Options vested at the grant date	50.00%
Options vested on the one-year anniversary of the grant date	50.00%
Expiration period, from grant date	10 years
Shares available for grant	0
2002 directors stock option plan [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Shares available for grant	0
2002 directors plan prior to September 30, 2007 [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Options vested at the grant date	50.00%
Options vested on the one-year anniversary of the grant date	50.00%
Expiration period, from grant date	10 years
2002 directors plan in November 2007 [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Options vested on the one-year anniversary of the grant date	50.00%
Options vested on the two-year anniversary of the grant date	50.00%
Expiration period, from grant date	10 years
2008 Plan [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Expiration period, from grant date	10 years
Shares available for grant	315,483
Common stock authorized	800,000
Maximum shares of common stock able to be granted pursuant to awards of restricted stock and restricted stock units	400,000
Number of annual installments	3