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Capital Transactions (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 29, 2013 | Aug. 08, 2013 | May 30, 2013 | May 08, 2013 | Mar. 28, 2013 | Mar. 06, 2013 | Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Dividends |  |  |  |  |  |  |  |  |  |
Dividend paid |  | $ 25,627 | $ 1,587 |  | $ 1,583 |  |  |  |  |
Cash dividend per common share (in dollars per share) | $ 0.10 |  |  | $ 0.10 |  | $ 0.10 | $ 1.60 | $ 0.05 | $ 1.80 | $ 0.10
Special one-time cash dividend per common share (in dollars per share) |  | $ 1.50 |  |  |  |  |  |  |  |
Share Repurchase Program |  |  |  |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  | 10,000 |  |  |  |  |  |  |  |
Period over which stock repurchase program to be implemented |  | 2 years |  |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  | 108 |  |  |
Average Price Paid per Share (in dollars per share) |  |  |  |  |  |  | $ 18.06 |  |  |
Program Balance Used for Repurchases |  |  |  |  |  |  | $ 1,945 |  |  |

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