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Quarterly Results of Operations (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Results of Operations (Unaudited) [Abstract] |
Quarterly Results Of Operations |
| For the Three Months Ended |  |
| March 31, |  | June 30, | September 30, | December 31, |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ | 3,965 |  | $ | 4,310 |  | $ | 4,638 |  | $ | 4,344 |  |
Total expenses |  | 3,697 |  |  | 3,889 |  |  | 4,888 |  |  | 3,863 |  |
Net income (loss) |  | 252 |  |  | 363 |  |  | (161 | ) |  | 431 |  |
Earnings (loss) per common share – basic: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | 1.23 |  |  | 1.80 |  |  | (0.81 | ) |  | 2.18 |  |
Earnings (loss) per common share – diluted: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | 1.22 |  |  | 1.79 |  |  | (0.83 | ) |  | 2.15 |  |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ | 3,609 |  | $ | 4,020 |  | $ | 4,264 |  | $ | 4,531 |  |
Total expenses |  | 3,174 |  |  | 3,569 |  |  | 3,732 |  |  | 4,064 |  |
Net income (loss) |  | 367 |  |  | 385 |  |  | 490 |  |  | 399 |  |
Earnings (loss) per common share – basic: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | 1.68 |  |  | 1.76 |  |  | 2.27 |  |  | 1.89 |  |
Earnings (loss) per common share – diluted: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | 1.64 |  |  | 1.70 |  |  | 2.24 |  |  | 1.80 |  |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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