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Consolidated Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Schedule of quarterly consolidated financial data | CONSOLIDATED QUARTERLY FINANCIAL DATA (dollars in thousands, except per share data) (unaudited) (not covered by Report of Independent Registered Public Accounting Firm)
|  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |  |  | Year |
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 354,365 |  |  | $ | 365,450 |  |  | $ | 374,247 |  |  | $ | 397,529 |  |  | $ | 1,491,591 |
Depreciation and amortization expense |  | 137,517 |  |  | 150,426 |  |  | 149,424 |  |  | 156,594 |  |  | 593,961 |
Interest expense |  | 70,020 |  |  | 72,488 |  |  | 73,410 |  |  | 75,073 |  |  | 290,991 |
Other expenses |  | 42,861 |  |  | 54,143 |  |  | 52,139 |  |  | 52,269 |  |  | 201,412 |
Net income |  | 111,230 |  |  | 95,420 |  |  | 101,275 |  |  | 129,553 |  |  | 437,478 |
Net income available to common stockholders |  | 110,942 |  |  | 95,194 |  |  | 101,049 |  |  | 129,297 |  |  | 436,482 |
Net income per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted |  | 0.37 |  |  | 0.31 |  |  | 0.32 |  |  | 0.39 |  |  | 1.38 |
Dividends paid per common share |  | 0.6720 |  |  | 0.6780 |  |  | 0.6795 |  |  | 0.6810 |  |  | 2.7105 |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ | 318,295 |  |  | $ | 328,886 |  |  | $ | 338,081 |  |  | $ | 342,576 |  |  | $ | 1,327,838 |
Depreciation and amortization expense |  | 131,103 |  |  | 133,999 |  |  | 136,967 |  |  | 137,711 |  |  | 539,780 |
Interest expense |  | 59,415 |  |  | 66,628 |  |  | 69,342 |  |  | 70,635 |  |  | 266,020 |
Other expenses |  | 47,680 |  |  | 39,349 |  |  | 40,302 |  |  | 54,752 |  |  | 182,083 |
Net income |  | 83,315 |  |  | 96,697 |  |  | 99,283 |  |  | 85,303 |  |  | 364,598 |
Net income available to common stockholders |  | 83,163 |  |  | 96,380 |  |  | 98,999 |  |  | 85,072 |  |  | 363,614 |
Net income per common share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted |  | 0.29 |  |  | 0.34 |  |  | 0.34 |  |  | 0.29 |  |  | 1.26 |
Dividends paid per common share |  | 0.6505 |  |  | 0.6585 |  |  | 0.6600 |  |  | 0.6615 |  |  | 2.6305 |

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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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