Selected Quarterly Financial Data (Unaudited) (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Quarterly Financial Information [Line Items] | ||||||||||
| Total Revenue | $ 8,991 | $ 5,173 | $ 6,815 | $ 5,903 | $ 7,543 | $ 2,520 | $ 4,404 | $ 2,778 | $ 26,882 | $ 17,245 |
| Operating expenses | (41,213) | (33,378) | (32,213) | (40,075) | (30,622) | (31,799) | (25,495) | (19,125) | (119,997) | (89,796) |
| Other expense | (2,410) | (3,030) | (3,394) | (1,969) | (1,728) | (3,067) | (1,674) | (1,248) | ||
| Gain from disposal of National | 2,333 | 0 | 0 | 0 | 2,333 | 0 | ||||
| Gain (loss) from discontinued operations | (7,116) | 2,648 | (6,924) | (2,077) | (1,212) | (3,961) | (184) | 3,034 | (11,136) | (2,323) |
| Non-controlling interests | 14,535 | 11,949 | 14,105 | 17,200 | 15,605 | 9,191 | 5,584 | 2,580 | (57,789) | (32,960) |
| Net loss attributable to common stockholders | $ (24,880) | $ (16,638) | $ (21,611) | $ (21,018) | $ (10,413) | $ (27,116) | $ (17,365) | $ (11,982) | $ (84,147) | $ (66,876) |
| Basic and diluted net loss per common share | $ (0.55) | $ (0.37) | $ (0.50) | $ (0.49) | $ (0.25) | $ (0.67) | $ (0.43) | $ (0.30) | $ (1.94) | $ (1.61) |
| X | ||||||||||
- Definition Amount after tax of gain (loss) from disposal of national No definition available.
|
| X | ||||||||||
- Definition Represent non operating income expense including interest income expense net. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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/disclosureRef
|
| X | ||||||||||
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
|
| X | ||||||||||
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|