Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plan Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details)

v3.5.0.2
Equity Incentive Plan Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details) - $ / shares
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,746,610 1,160,683    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 7.37 $ 10.49    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2,900,156 2,386,903 2,290,609 2,002,406
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period 1,095,888 720,712    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value $ 10.35 $ 10.46    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 41,175 55,474    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value $ 8.77 $ 10.19    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 8.59 $ 10.36 $ 10.36 $ 10.32