Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation and Cash-Based Incentive Compensation - Summary of Share Activity Related to Restricted Stock Units (Details)

v3.2.0.727
Share-Based Compensation and Cash-Based Incentive Compensation - Summary of Share Activity Related to Restricted Stock Units (Details) - 6 months ended Jun. 30, 2015 - Restricted Stock Units (RSUs) - $ / shares
Total
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Nonvested, beginning of period 1,977,335
Vested (23,500)
Forfeited (71,890)
Nonvested, end of period 1,881,945
Weighted Average Grant Date Value, Beginning of period $ 15.29
Weighted Average Grant Date Fair Value, Vested 14.68
Weighted Average Grant Date Fair Value, Forfeited 15.15
Weighted Average Grant Date Value, End of period $ 15.30