Stockholders' Equity - Summary of Noncontrolling Interest Balances (Detail) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
$ 944,262
|
$ 530,586
|
| Distribution to noncontrolling interests |
|
|
(11,771)
|
(4,382)
|
| Acquisition of Post Rock |
|
|
|
205,100
|
| Buyout of noncontrolling interest |
|
|
|
(95,047)
|
| Contribution from noncontrolling interests |
|
|
|
191,251
|
| Other |
|
|
(103)
|
|
| Net loss |
$ (7,037)
|
$ (5,927)
|
(24,838)
|
(16,747)
|
| Other comprehensive loss, net of tax |
|
|
(865)
|
(49)
|
| Ending balance |
906,685
|
810,712
|
906,685
|
810,712
|
| Capital [Member] |
|
|
|
|
| Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
972,241
|
529,539
|
| Distribution to noncontrolling interests |
|
|
(11,771)
|
(4,382)
|
| Acquisition of Post Rock |
|
|
|
205,100
|
| Buyout of noncontrolling interest |
|
|
|
(88,747)
|
| Contribution from noncontrolling interests |
|
|
|
191,251
|
| Other |
|
|
(103)
|
|
| Net loss |
|
|
0
|
0
|
| Other comprehensive loss, net of tax |
|
|
0
|
0
|
| Ending balance |
960,367
|
832,761
|
960,367
|
832,761
|
| Accumulated Income (Loss) [Member] |
|
|
|
|
| Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
(27,426)
|
9,892
|
| Distribution to noncontrolling interests |
|
|
0
|
0
|
| Acquisition of Post Rock |
|
|
|
0
|
| Buyout of noncontrolling interest |
|
|
|
(14,244)
|
| Contribution from noncontrolling interests |
|
|
|
0
|
| Other |
|
|
0
|
|
| Net loss |
|
|
(24,838)
|
(16,747)
|
| Other comprehensive loss, net of tax |
|
|
0
|
0
|
| Ending balance |
(52,264)
|
(21,099)
|
(52,264)
|
(21,099)
|
| Accumulated Other Comprehensive Income [Member] |
|
|
|
|
| Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
(553)
|
(8,845)
|
| Distribution to noncontrolling interests |
|
|
0
|
0
|
| Acquisition of Post Rock |
|
|
|
0
|
| Buyout of noncontrolling interest |
|
|
|
7,944
|
| Contribution from noncontrolling interests |
|
|
|
0
|
| Other |
|
|
0
|
|
| Net loss |
|
|
0
|
0
|
| Other comprehensive loss, net of tax |
|
|
(865)
|
(49)
|
| Ending balance |
$ (1,418)
|
$ (950)
|
$ (1,418)
|
$ (950)
|