Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Offsetting of Derivative Assets and Liabilities) (Details)

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Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities (Offsetting of Derivative Assets and Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Jun. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Derivatives - Assets, Gross Amounts of Recognized Assets $ 1,185 $ 4,016
Derivatives - Assets, Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Derivatives - Assets, Net Amount Presented in the Consolidated Balance Sheets 1,185 4,016
Derivatives - Assets, Financial Instruments (1,139) (1,520)
Derivatives - Assets, Cash Collateral Received 0 0
Derivatives - Assets, Net Amount 46 2,496
Derivatives - Liabilities, Gross Amounts of Recognized Assets (1,445) (2,173)
Derivatives - Liabilities, Gross Amounts Offset in the Consolidated Balance Sheets 0 0
Derivatives - Liabilities, Net Amount Presented in the Consolidated Balance Sheets (1,445) (2,173)
Derivatives - Liabilities, Financial Instruments 1,139 1,520
Derivatives - Liabilities, Cash Collateral Received 0 0
Derivatives - Liabilities, Net Amount $ (306) $ (653)