Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Additional Information (Detail)

v3.7.0.1
Share-Based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation expense for vested shares employees and directors | $ $ 17,800
Total grant date fair value | $ 21,165
Settlement of Bonuses Accrued at December 31, 2016 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Share-based compensation expense for vested shares employees and directors | $ $ 2,000
Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Weighted average grant date fair value per share | $ / shares $ 12.62
Final Investment Decision ("FID Awards") [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total grant date fair value | $ $ 65,300
Awards outstanding 5,200,000
2016 Omnibus Compensation Incentive Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of common stock authorized for issuance 40,000,000
Maximum number of common shares granted to an employee 10,000,000
2016 Omnibus Compensation Incentive Plan [Member] | Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares granted 3,900,000
2016 Omnibus Incentive Plan ("Legacy Plan") [Member] | Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares granted 14,900,000