Derivative Instruments (Derivative Assets Offset in The Consolidated Balance Sheets) (Details) - Not Designated as Hedging Instrument [Member] - Interest Rate Swap [Member] $ in Thousands	Jun. 30, 2015 USD ($)
Offsetting Assets [Line Items]
Gross amounts of recognized assets	$ 6,602
Net Amounts of Assets presented in the Statement of Financial Position	6,602
Fair Value of collateral	6,602
Total Gross amounts not offset in the statement of financial position including applicable netting agreement and fair value of collateral	6,602
Net Amount	$ 0