Reconciliation of Income and Number of Shares Used to Calculate Basic and Diluted Earnings per Share (EPS) - Summary of Reconciliation of Income and Number of Shares Used to Calculate Basic and Diluted Earnings per Share (EPS) (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Earnings Per Share [Abstract] | |||||||||||
| EPS, income | $ (48,929,000) | $ (46,228,000) | $ (39,822,000) | $ (95,835,000) | $ (35,646,000) | $ (48,620,000) | $ (14,029,000) | $ 3,222,000 | $ (230,814,000) | $ (95,073,000) | $ 23,451,000 |
| Basic EPS, shares | 124,130,004 | 122,562,187 | 121,186,464 | ||||||||
| Basic earnings (loss) per share: | $ (0.39) | $ (0.37) | $ (0.32) | $ (0.78) | $ (0.29) | $ (0.40) | $ (0.11) | $ 0.03 | $ (1.86) | $ (0.78) | $ 0.19 |
| Stock options and restricted stock, shares | 0 | 0 | 1,890,184 | ||||||||
| Stock options and restricted stock, per share amount | 0.00 | 0.00 | $ 0.00 | $ 0.00 | $ 0.00 | ||||||
| Diluted EPS, shares | 124,130,004 | 122,562,187 | 123,076,648 | ||||||||
| Diluted earnings (loss) per share: | $ (0.39) | $ (0.37) | $ (0.32) | $ (0.78) | $ (0.29) | $ (0.40) | $ (0.11) | $ 0.03 | $ (1.86) | $ (0.78) | $ 0.19 |
| X | ||||||||||
- Definition Stock options and restricted stock represents contracts that gives the holder the right, but not the obligation, either to purchase or to sell a certain number of shares of stock at a predetermined price for a specified period of time and shares that an entity has not yet issued because the agreed-upon consideration, such as employee services, has not yet been received, respectively. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
|
| X | ||||||||||
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|