Derivatives (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Gross Amount Recognized in Consolidated Balance Sheets	$ 2,977
Gross Amounts Offset in Consolidated Balance Sheets	0
Net Amount Presented in the Consolidated Balance Sheets	2,977
Financial Instruments	0
Cash Collateral	(2,940)
Net Amount	37
Interest Rate Cap [Member]
Gross Amount Recognized in Consolidated Balance Sheets	10	40
Gross Amounts Offset in Consolidated Balance Sheets	0	0
Net Amount Presented in the Consolidated Balance Sheets	10	40
Financial Instruments	0	0
Cash Collateral	0	0
Net Amount	10	40
Interest Rate Swap [Member]
Gross Amount Recognized in Consolidated Balance Sheets	2,967
Gross Amounts Offset in Consolidated Balance Sheets	0
Net Amount Presented in the Consolidated Balance Sheets	2,967
Financial Instruments	0
Cash Collateral	(2,940)
Net Amount	$ 27