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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data (Unaudited) | Quarterly Financial Data (Unaudited): The following is a summary of quarterly results of operations for the years ended December 31, 2019 and 2018:
| 2019 Quarter Ended |  |  |  |  |  |  |  | 2018 Quarter Ended |  |  |  |  |  |
| Dec 31 |  | Sep 30 |  | Jun 30 |  | Mar 31 |  | Dec 31 |  | Sep 30 |  | Jun 30 |  | Mar 31
Revenues | $ | 241,841 |  |  | $ | 231,127 |  |  | $ | 227,972 |  |  | $ | 226,522 |  |  | $ | 246,874 |  |  | $ | 242,198 |  |  | $ | 234,545 |  |  | $ | 236,734 |
Net income (loss) attributable to the Company | $ | 26,891 |  |  | $ | 46,371 |  |  | $ | 15,734 |  |  | $ | 7,824 |  |  | $ | 11,749 |  |  | $ | 74,028 |  |  | $ | 7,816 |  |  | $ | (33,573) |
Net income (loss) attributable to common stockholders per share-basic | $ | 0.19 |  |  | $ | 0.33 |  |  | $ | 0.11 |  |  | $ | 0.05 |  |  | $ | 0.08 |  |  | $ | 0.52 |  |  | $ | 0.05 |  |  | $ | (0.24) |
Net income (loss) attributable to common stockholders per share-diluted | $ | 0.19 |  |  | $ | 0.33 |  |  | $ | 0.11 |  |  | $ | 0.05 |  |  | $ | 0.08 |  |  | $ | 0.52 |  |  | $ | 0.05 |  |  | $ | (0.24) |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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