Consolidated Quarterly Financial Data - Schedule of Consolidated Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 08, 2017 |
Sep. 15, 2017 |
Jun. 15, 2017 |
Mar. 15, 2017 |
Dec. 15, 2016 |
Sep. 15, 2016 |
Jun. 15, 2016 |
Mar. 15, 2016 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Quarterly Financial Information Disclosure [Abstract] | |||||||||||||||||||
| Total revenues | $ 107,370 | $ 108,721 | $ 108,670 | $ 106,497 | $ 109,781 | $ 109,541 | $ 110,008 | $ 106,010 | $ 431,258 | $ 435,340 | $ 402,706 | ||||||||
| Depreciation and amortization | 43,052 | 43,318 | 43,441 | 43,875 | 43,534 | 43,820 | 42,759 | 42,923 | 173,686 | 173,036 | 166,478 | ||||||||
| Interest | 27,589 | 29,948 | 28,051 | 27,806 | 27,887 | 28,662 | 29,676 | 32,465 | 113,394 | 118,690 | 139,183 | ||||||||
| Other expenses | 19,515 | 40,514 | 40,329 | 46,669 | 52,317 | 35,741 | 31,379 | 26,767 | 147,027 | 146,204 | |||||||||
| (Loss) gain on debt extinguishment | (1,190) | 1,792 | 7 | (30) | (77) | (8,016) | 14,777 | (5,079) | 579 | 1,605 | (2,375) | ||||||||
| Gain on disposition of assets | 20,712 | 10,089 | 6,884 | 5,013 | 8,397 | 11,517 | 5,635 | 4,074 | 42,698 | 29,623 | |||||||||
| (Loss) income from continuing operations | 36,736 | 6,822 | 3,740 | (6,870) | (5,637) | 4,819 | 26,606 | 2,850 | 40,428 | 28,638 | (32,701) | ||||||||
| Income (loss) from discontinued operations | (945) | (1,500) | 19,466 | 19,699 | 6,625 | 22,580 | 19,353 | 20,250 | 36,720 | 68,808 | 125,913 | ||||||||
| Dividends paid to preferred stockholders | 2,530 | 0 | 0 | 0 | 2,530 | 0 | 0 | ||||||||||||
| Net income attributable to common stockholders/ after preferred distributions | $ 33,261 | $ 5,322 | $ 23,206 | $ 12,829 | $ 988 | $ 27,399 | $ 45,959 | $ 23,100 | $ 74,618 | $ 97,446 | $ 93,212 | ||||||||
| Net income per share attributable to common stockholders and partners: | |||||||||||||||||||
| Basic (in dollars per share) | $ 0.07 | $ 0.01 | $ 0.05 | $ 0.03 | $ 0.00 | $ 0.06 | $ 0.10 | $ 0.05 | $ 0.16 | $ 0.21 | $ 0.21 | ||||||||
| Diluted (in dollars per share) | 0.07 | 0.01 | 0.05 | 0.03 | 0.00 | 0.06 | 0.10 | 0.05 | 0.16 | 0.21 | $ 0.21 | ||||||||
| Dividends declared per common share and partnership unit (in dollars per share) | $ 0.18 | $ 0.18 | $ 0.18 | $ 0.18 | $ 0.18 | $ 0.175 | $ 0.175 | $ 0.175 | $ 0.18000 | $ 0.18000 | $ 0.18000 | $ 0.18000 | $ 0.18000 | $ 0.175 | $ 0.175 | $ 0.175 | $ 0.72 | $ 0.705 | |