Borrowing Arrangements (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2019 |
Dec. 31, 2018 |
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Debt Instrument [Line Items] | |||||||||||
Other borrowings | $ 26,064 | $ 36,810 | |||||||||
Federal Home Loan Bank borrowings | 823,757 | 719,065 | |||||||||
Other borrowings: | |||||||||||
Debt Instrument [Line Items] | |||||||||||
Other borrowings | 26,064 | 36,810 | |||||||||
Average amount outstanding during the period | [1] | 15,653 | 10,880 | ||||||||
Maximum amount outstanding during the period | [2] | $ 28,354 | $ 36,810 | ||||||||
Weighted average interest rate during the period | [3] | 1.70% | 1.40% | ||||||||
Interest rate at end of the period | [4] | 2.00% | 2.10% | ||||||||
Federal Home Loan Bank borrowings: | |||||||||||
Debt Instrument [Line Items] | |||||||||||
Federal Home Loan Bank borrowings | $ 823,757 | $ 719,065 | |||||||||
Average amount outstanding during the period | [1] | 785,901 | 720,785 | ||||||||
Maximum amount outstanding during the period | [2] | $ 1,004,997 | $ 957,231 | ||||||||
Weighted average interest rate during the period | [3] | 2.10% | 1.80% | ||||||||
Interest rate at end of the period | [4] | 2.40% | 2.30% | ||||||||
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