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Unaudited Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2017
Condensed Income Statements, Captions [Line Items] |
Schedule of Quarterly Financial Information |
| 3/31/2017 |  | 6/30/2017 |  | 9/30/2017 |  | 12/31/2017
Total gross revenues | $ | 96,099 |  |  | $ | 95,684 |  |  | $ | 97,689 |  |  | $ | 102,169 |
Net income | $ | 42,220 |  |  | $ | 7,365 |  |  | $ | 5,596 |  |  | $ | 31,448 |
Net income attributable to common shareholders | $ | 40,397 |  |  | $ | 5,519 |  |  | $ | 3,916 |  |  | $ | 29,235 |
Net income attributable to common shareholders - basic per share | $ | 0.17 |  |  | $ | 0.02 |  |  | $ | 0.02 |  |  | $ | 0.12 |
Net income attributable to common shareholders - diluted per share | $ | 0.17 |  |  | $ | 0.02 |  |  | $ | 0.02 |  |  | $ | 0.12 |
| 3/31/2016 |  | 6/30/2016 |  | 9/30/2016 |  | 12/31/2016
Total gross revenues | $ | 111,277 |  |  | $ | 116,912 |  |  | $ | 105,981 |  |  | $ | 95,326 |
Net income (loss) | $ | 50,453 |  |  | $ | 56,680 |  |  | $ | (27,612 | ) |  | $ | 16,929 |
Net income (loss) attributable to common shareholders | $ | 47,781 |  |  | $ | 53,875 |  |  | $ | (26,975 | ) |  | $ | 14,391 |
Net income (loss) attributable to common shareholders - basic per share | $ | 0.21 |  |  | $ | 0.23 |  |  | $ | (0.12 | ) |  | $ | 0.06 |
Net income (loss) attributable to common shareholders - diluted per share | $ | 0.20 |  |  | $ | 0.23 |  |  | $ | (0.12 | ) |  | $ | 0.06 |
LCIF [Member] |
Condensed Income Statements, Captions [Line Items] |
Schedule of Quarterly Financial Information |
|  | 3/31/2017 |  | 6/30/2017 |  | 9/30/2017 |  | 12/31/2017
Total gross revenues |  | $ | 19,281 |  |  | $ | 20,646 |  |  | $ | 21,242 |  |  | $ | 21,604 |
Net income (loss) |  | $ | (470 | ) |  | $ | (8 | ) |  | $ | (4,422 | ) |  | $ | 8,459 |
Net income (loss) per unit |  | $ | (0.01 | ) |  | $ | — |  |  | $ | (0.05 | ) |  | $ | 0.11 |
|  | 3/31/2016 |  | 6/30/2016 |  | 9/30/2016 |  | 12/31/2016
Total gross revenues |  | $ | 34,100 |  |  | $ | 40,772 |  |  | $ | 30,558 |  |  | $ | 18,739 |
Net income (loss) |  | $ | 18,027 |  |  | $ | 22,754 |  |  | $ | (61,579 | ) |  | $ | 16,877 |
Net income (loss) per unit |  | $ | 0.22 |  |  | $ | 0.27 |  |  | $ | (0.74 | ) |  | $ | 0.20 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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