Consolidated Statements of Operations (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenues:      
Rentals $ 574,456 $ 404,402 $ 266,567
Interest income on loans receivable 7,239 5,928 5,696
Earned income from direct financing leases 3,343 1,572 0
Tenant reimbursement income 13,085 5,637 0
Interest income and other 4,748 1,928 852
Total revenues 602,871 419,467 273,115
Expenses:      
General and administrative 44,252 35,146 36,252
Finance restructuring charges 13,022 717 0
Merger costs 0 56,644 0
Property costs 23,383 11,760 5,176
Real estate acquisition costs 3,631 1,718 1,054
Interest 220,070 179,267 156,220
Depreciation and amortization 247,966 164,054 104,984
Impairments (recoveries) 36,019 (185) 8,918
Total expenses 588,343 449,121 312,604
Income (loss) from continuing operations before other expense and income tax expense 14,528 (29,654) (39,489)
Other expense:      
Loss on debt extinguishment (64,750) (2,405) (32,522)
Total other expense (64,750) (2,405) (32,522)
Loss from continuing operations before income tax expense (50,222) (32,059) (72,011)
Income tax expense 673 1,113 504
Loss from continuing operations (50,895) (33,172) (72,515)
Discontinued operations:      
Income (loss) from discontinued operations 3,368 (2,077) (369)
Gain (loss) on dispositions of assets 488 36,926 (3,349)
Income (loss) from discontinued operations 3,856 34,849 (3,718)
(Loss) income before dispositions of assets (47,039) 1,677 (76,233)
Gain on dispositions of assets 13,240 0 0
Net (loss) income (33,799) 1,677 (76,233)
Less: preferred dividends 0 0 (63)
Net (loss) income attributable to common stockholders $ (33,799) $ 1,677 $ (76,296)
Net (loss) income per share of common stock—basic and diluted:      
Continuing operations (in dollars per share) $ (0.10) $ (0.14) $ (0.92)
Discontinued operations (in dollars per share) $ 0.01 $ 0.14 $ (0.05)
Net (loss) income per share attributable to common stockholders - basic and diluted (in dollars per share) $ (0.09) $ 0.00 $ (0.97)
Weighted average common shares outstanding:      
Basic and diluted (in shares) 386,809,746 255,020,565 78,625,102