Income Per Share - Schedule of Reconciliation of the Numerator and Denominator Used in the Computation of Basic and Diluted Income Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Basic and diluted income: |
|
|
|
|
| Income from continuing operations |
$ 9,439
|
$ 9,053
|
$ 57,237
|
$ 19,940
|
| Gain on disposition of assets |
17,960
|
5,991
|
39,221
|
66,291
|
| Less: income attributable to unvested restricted stock |
(192)
|
(132)
|
(430)
|
(566)
|
| Income used in basic and diluted income per share from continuing operations |
27,207
|
14,912
|
96,028
|
85,665
|
| (Loss) income from discontinued operations |
0
|
(41)
|
0
|
680
|
| Net income attributable to common stockholders used in basic and diluted income per share |
$ 27,207
|
$ 14,871
|
$ 96,028
|
$ 86,345
|
| Basic weighted average shares of common stock outstanding: |
|
|
|
|
| Weighted average shares of common stock outstanding (in shares) |
480,326,857
|
441,512,930
|
457,992,378
|
430,650,925
|
| Less: unvested weighted average shares of restricted stock (in shares) |
(772,495)
|
(1,307,582)
|
(728,852)
|
(1,263,218)
|
| Weighted average shares of common stock outstanding used in basic income per share (in shares) |
479,554,362
|
440,205,348
|
457,263,526
|
429,387,707
|
| Net income per share attributable to common stockholders—basic (in USD per share) |
$ 0.06
|
$ 0.03
|
$ 0.21
|
$ 0.20
|
| Dilutive weighted average shares of common stock outstanding: |
|
|
|
|
| Convertible debt (in shares) |
972,054
|
0
|
0
|
0
|
| Weighted average shares of common stock outstanding used in dilutive income per share (in shares) |
480,598,610
|
440,353,965
|
457,301,623
|
429,738,776
|
| Net income per share attributable to common stockholders—diluted (in USD per share) |
$ 0.06
|
$ 0.03
|
$ 0.21
|
$ 0.20
|
| Potentially dilutive shares of common stock |
|
|
|
|
| Potentially dilutive shares (in shares) |
181,667
|
271,462
|
121,230
|
393,164
|
| Unvested shares of restricted stock |
|
|
|
|
| Potentially dilutive shares of common stock |
|
|
|
|
| Potentially dilutive shares (in shares) |
181,667
|
271,462
|
121,230
|
393,164
|
| Unvested performance shares |
|
|
|
|
| Dilutive weighted average shares of common stock outstanding: |
|
|
|
|
| Dilutive weighted average share of common stock (in shares) |
67,506
|
147,098
|
33,938
|
347,055
|
| Stock options |
|
|
|
|
| Dilutive weighted average shares of common stock outstanding: |
|
|
|
|
| Dilutive weighted average share of common stock (in shares) |
4,688
|
1,519
|
4,159
|
4,014
|