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, 2015 USD ($)
Offsetting Assets [Line Items]
Gross amounts of recognized assets	$ 14,099
Net Amounts of Assets presented in the Statement of Financial Position	14,099
Fair Value of collateral	14,099
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	14,099
Net Amount	$ 0