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Stock Compensation - Restricted Stock and Performance Share Grants - Performance Share Grants (Details)
6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Performance share grants
Dec. 31, 2013
Performance share grants
Jun. 30, 2014
Performance share grants
Minimum
Jun. 30, 2014
Performance share grants
Maximum
Jun. 30, 2014
Time Based Grants [Member]
Dec. 31, 2013
Time Based Grants [Member]
Jun. 30, 2014
Restricted Stock and Performance Shares [Member]
Dec. 31, 2013
Restricted Stock and Performance Shares [Member]
Dec. 31, 2012
Restricted Stock and Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 152,418 177,044     94,309 88,657      
Below threshold performance 0                
Threshold and target performance     79,961 152,418          
Maximum performance       250,517          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number             246,727 265,701 688,041