Derivative Instrument and Hedging Activity (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Description of Derivative Liabilities
Derivative instruments	$ 767	$ 816
Interest rate swap
Description of Derivative Liabilities
Gross amounts of recognized liabilities	767	816
Derivative instruments	767	816
Interest rate swap \| Financial Instruments
Description of Derivative Liabilities
Gross amounts not offset in the balance sheet	$ 767	$ 816

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of after one year or beyond the normal operating cycle, if longer, net of the effects of master netting arrangements.

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+ Details