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Restrictions on Cash and Cash Equivalents	12 Months Ended
Restrictions on Cash and Cash Equivalents	Sep. 30, 2018
Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Cash Equivalents	Restrictions on Cash and Cash Equivalents The Company is required to maintain reserve balances in cash and on deposit with the Federal Reserve based on a percentage of transactional deposits. The total requirement was approximately $53.7 million and $26.9 million at September 30, 2018 and 2017, respectively.