Derivative Instruments (Derivative Assets Offset in The Consolidated Balance Sheets) (Details) - Interest Rate Swap $ in Thousands	Jun. 30, 2018 USD ($)
Customer Counterparties Loan Interest Rate Swap Assets [Member] \| Non-hedging interest rate derivatives:
Offsetting Assets [Line Items]
Gross amounts of recognized assets	$ 1,819
Net Amounts of Assets presented in the Statement of Financial Position	1,819
Fair Value of collateral	1,819
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	1,819
Net Amount	0
Financial Institution Counterparties Loan Interest Rate Swap Asset [Member] \| Non-hedging interest rate derivatives:
Offsetting Assets [Line Items]
Gross amounts of recognized assets	23,314
Net Amounts of Assets presented in the Statement of Financial Position	23,314
Fair Value of collateral	0
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	0
Net Amount	23,314
Financial Institution Counterparties Loan Interest Rate Swap Asset [Member] \| Derivatives designated as hedges of fair value:
Offsetting Assets [Line Items]
Gross amounts of recognized assets	115
Net Amounts of Assets presented in the Statement of Financial Position	115
Fair Value of collateral	69
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	69
Net Amount	$ 46

Fair value of securities received as collateral against derivative assets.

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