Loans (Narrative) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2019 USD ($) contract	Mar. 31, 2018 contract	Dec. 31, 2018 USD ($)
Financing Receivable, Recorded Investment [Line Items]
Loans to related parties	$ 9,500		$ 9,600
Loans and Leases Receivable, Related Parties, Advances	0
Repayments on related party loans	$ 99
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| contract	1	0
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 3,240,000		3,220,000
Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 86,100		$ 82,000

Federal Reserve Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged

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- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

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- Definition

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

+ References

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- Definition

Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.

+ References

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