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Dividends (Tables) | 12 Months Ended
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Sep. 30, 2017
Other Liabilities Disclosure [Abstract] |
Summary of Dividends Declared by Board of directors | The Company’s Board of Directors declared the following dividends during the fiscal years ended September 30, 2017, 2016 and 2015:
Declaration Date |  | Dividends Per Ordinary Share |  |  | Record Date |  | Total Amount |  |  | Payment Date
August 2, 2017 |  | $ | 0.220 |  |  | September 29, 2017 |  | $ | 31,736 |  |  | October 23, 2017
May 9, 2017 |  | $ | 0.220 |  |  | June 30, 2017 |  | $ | 31,981 |  |  | July 14, 2017
February 1, 2017 |  | $ | 0.220 |  |  | March 31, 2017 |  | $ | 32,223 |  |  | April 14, 2017
November 8, 2016 |  | $ | 0.195 |  |  | December 30, 2016 |  | $ | 28,606 |  |  | January 13, 2017
July 26, 2016 |  | $ | 0.195 |  |  | September 30, 2016 |  | $ | 28,693 |  |  | October 21, 2016
May 4, 2016 |  | $ | 0.195 |  |  | June 30, 2016 |  | $ | 28,836 |  |  | July 15, 2016
February 2, 2016 |  | $ | 0.195 |  |  | March 31, 2016 |  | $ | 29,206 |  |  | April 15, 2016
November 10, 2015 |  | $ | 0.170 |  |  | December 31, 2015 |  | $ | 25,565 |  |  | January 15, 2016
July 29, 2015 |  | $ | 0.170 |  |  | September 30, 2015 |  | $ | 25,697 |  |  | October 16, 2015
April 29, 2015 |  | $ | 0.170 |  |  | June 30, 2015 |  | $ | 26,127 |  |  | July 17, 2015
January 27, 2015 |  | $ | 0.170 |  |  | March 31, 2015 |  | $ | 26,286 |  |  | April 16, 2015
November 4, 2014 |  | $ | 0.155 |  |  | December 31, 2014 |  | $ | 24,086 |  |  | January 16, 2015

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- Definition Tabular disclosure of information related to dividends declared, including paid and unpaid dividends. + References No definition available. + Details
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