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Selected Quarterly Data (Unaudited) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Data (Unaudited) | Selected Quarterly Data (Unaudited)
| 2019
($ in thousands, except per share data) | Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
Revenues | $ | 146,084 |  |  | $ | 145,955 |  |  | $ | 140,489 |  |  | $ | 130,718 |
Operating Income (Loss) | 37,796 |  |  | 35,787 |  |  | 30,128 |  |  | 20,999 |
Net Income (Loss) | 29,782 |  |  | 25,359 |  |  | 27,899 |  |  | 22,468 |
Net Income (Loss) Attributable to Common Stockholders | 20,808 |  |  | 22,000 |  |  | 24,842 |  |  | 19,662 |
Earnings (loss) per share—Basic | $ | 3.02 |  |  | $ | 3.17 |  |  | $ | 3.55 |  |  | $ | 2.80 |
Earnings (loss) per share—Diluted | $ | 2.83 |  |  | $ | 2.95 |  |  | $ | 3.26 |  |  | $ | 2.61 |
| 2018
($ in thousands, except per share data) | Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
Revenues | $ | 138,065 |  |  | $ | 152,210 |  |  | $ | 132,932 |  |  | $ | 129,028 |
Operating Income (Loss) | 29,228 |  |  | 33,946 |  |  | 27,308 |  |  | 22,617 |
Net Income (Loss) | 1,093 |  |  | 27,931 |  |  | 23,229 |  |  | 23,827 |
Net Income (Loss) Attributable to Common Stockholders | 77 |  |  | 24,913 |  |  | 20,986 |  |  | 21,216 |
Earnings (loss) per share—Basic | $ | 0.01 |  |  | $ | 3.47 |  |  | $ | 2.91 |  |  | $ | 2.95 |
Earnings (loss) per share—Diluted | $ | 0.01 |  |  | $ | 3.19 |  |  | $ | 2.75 |  |  | $ | 2.77 |

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- References No definition available. + Details
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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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