Derivative Instruments (Derivative Liabilities Offset in The consolidated Balance Sheets) (Details) - Non-hedging interest rate derivatives: - Interest Rate Swap $ in Thousands	Jun. 30, 2018 USD ($)
Customer Counterparties Loan Interest Rate Swap Liabilities [Member]
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	$ 23,114
Derivative liabilities	23,114
Fair Value of collateral	23,114
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	23,114
Net Amount	0
Financial Institution Counterparties Loan Interest Rate Swap Liabilities [Member]
Offsetting Liabilities [Line Items]
Gross amounts of recognized liabilities	1,819
Derivative liabilities	1,819
Fair Value of collateral	13,962
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	13,962
Net Amount	$ 0

Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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