Derivative Instruments (Derivative Assets Offset in The Consolidated Balance Sheets) (Details) - Not Designated as Hedging Instrument [Member] - Interest Rate Swap [Member] $ in Thousands	Sep. 30, 2016 USD ($)
Offsetting Assets [Line Items]
Gross amounts of recognized assets	$ 27,459
Net Amounts of Assets presented in the Statement of Financial Position	27,459
Fair Value of collateral	27,459
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	27,459
Net Amount	$ 0