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Significant Accounting Policies Derivative Instruments (Details)
12 Months Ended
Dec. 31, 2013
Derivative Instruments [Abstract]  
Effective Fair Value Hedge, Fair Value Adjustment of Interest Rate Swap to Cumulative Change in Fair Value of Hedged Item, Minimum 80.00%
Effective Fair Value Hedge, Fair Value Adjustment of Interest Rate Swap to Cumulative Change in Fair Value of Hedged Item, Maximum 120.00%