|
Stock-Based Compensation - Summary of Stock-based Compensation Expense (Detail) (USD $)
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Time-based Restricted Stock Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
$ 7,000,000 |
$ 8,300,000 |
$ 4,200,000 |
| Modified Time-based Restricted Stock Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
2,500,000 |
|
|
| Liability Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
0 |
|
900,000 |
| Management Retention Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
900,000 |
1,400,000 |
2,300,000 |
| Restricted Stock Sales [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
|
200,000 |
|
| Selling, General and Administrative Expenses [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
10,552,000 |
9,979,000 |
7,328,000 |
| Selling, General and Administrative Expenses [Member] | Time-based Restricted Stock Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
7,037,000 |
8,346,000 |
4,192,000 |
| Selling, General and Administrative Expenses [Member] | Modified Time-based Restricted Stock Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
2,469,000 |
|
|
| Selling, General and Administrative Expenses [Member] | Restricted Stock Units- Under 2014 Omnibus Plan [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
100,000 |
|
|
| Selling, General and Administrative Expenses [Member] | Liability Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
50,000 |
46,000 |
861,000 |
| Selling, General and Administrative Expenses [Member] | Management Retention Awards [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
896,000 |
1,416,000 |
2,275,000 |
| Selling, General and Administrative Expenses [Member] | Restricted Stock Sales [Member] | Parent Guarantor [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
| Stock-based compensation expense |
|
$ 171,000 |
|