Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Commitment and Contingencies

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Commitment and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Commitment and Contingencies [Line Items]
Weighted average remaining lease term	8 years 10 months 24 days
Weighted average discount rate	2.00%
Operating lease payments	$ 1,488
Right-of-use assets obtained in exchange for lease liabilities	2,083
Loans in process	1,312,282	$ 1,201,341
Allowance for loan losses	132,513	131,534	$ 131,165	$ 129,257
Unfunded Loan Commitment
Commitment and Contingencies [Line Items]
Allowance for loan losses	7,500	6,900
Loans and Leases Receivable
Commitment and Contingencies [Line Items]
Loans in process	$ 2,639,733	$ 2,379,089