Annual report pursuant to Section 13 and 15(d)

Share-Based Awards and Cash-Based Awards - Summary of Compensation Expense Related to Share-Based Awards and Cash-Based Awards (Details)

v3.6.0.2
Share-Based Awards and Cash-Based Awards - Summary of Compensation Expense Related to Share-Based Awards and Cash-Based Awards (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]      
Share-based compensation charged to operating income $ 11,013 $ 10,242 $ 14,744
Total charged to operating income 11,013 10,373 24,979
General And Administrative Expense      
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]      
Share-based compensation charged to operating income $ 11,013 10,242 14,744
Cash-based incentive compensation charged to operating income [1]   (233) 6,950
Lease Operating Expense      
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]      
Cash-based incentive compensation charged to operating income   $ 364 $ 3,285
[1] Adjustments to true up estimates to actual payments resulted in net credit balances to expense for 2015.