Quarterly report pursuant to Section 13 or 15(d)

Stock Repurchase Program (Narrative) (Details)

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Stock Repurchase Program (Narrative) (Details)
86 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2014
Jan. 17, 2007
Mar. 31, 2014
Annually [Member]
Mar. 31, 2014
Annually per Individual [Member]
Mar. 31, 2014
Private Repurchase [Member]
Mar. 31, 2013
Private Repurchase [Member]
Mar. 31, 2014
Private Repurchase [Member]
Mar. 31, 2013
Private Repurchase [Member]
Mar. 31, 2014
Open Market Repurchase [Member]
Mar. 31, 2013
Open Market Repurchase [Member]
Mar. 31, 2014
Open Market Repurchase [Member]
Mar. 31, 2013
Open Market Repurchase [Member]
Equity, Class of Treasury Stock [Line Items]                        
Number of shares authorized to be repurchased 3,000,000 1,000,000 450,000 50,000                
Stock repurchased during period, shares 2,015,954       1,500 18,125 1,500 43,125 0 10,000 0 10,000
Remaining number of shares authorized to be repurchased 984,046