Borrowings and Related Interest (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Subordinated Debt	$ 36,083	$ 36,083
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Loans pledged as collateral to secure FHLB advances	871,200	847,300,000
Additional Borrowing Capacity	$ 790,300	$ 762,000
Weighted average period remaining maturity of FHLB advances	28.0	26.6
Interest payable	$ 192	$ 176
Minimum amount of qualifying collateral	110.00%
Repurchase agreement
Debt Instrument [Line Items]
Interest payable	$ 609	$ 785

Weighted average maturity (weighted by amount of the agreement) of FHLB advances.

No definition available.

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- Definition

Minimum amount of qualifying collateral of the fair value of outstanding advances.

+ References

No definition available.

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- Definition

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

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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- Definition

Amount before allowance of mortgage loans on existing land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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