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Common Stock, Long-Term Incentive Compensation Plan (Details)
12 Months Ended
Dec. 31, 2015
shares
2010 Long-Term Incentive Compensation Plan [Member] | Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares of common stock granted and immediately vested under the 2010 LTIP (in shares) 9,611