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Selected Quarterly Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Data (Unaudited) | Selected Quarterly Data (Unaudited)
| 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 |
| 2017
($ in thousands, except per share data) | Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
Revenues | $ | 128,024 |  |  | $ | 123,675 |  |  | $ | 94,132 |  |  | $ | 79,776 |
Operating Income (Loss) | 28,015 |  |  | 16,789 |  |  | 3,184 |  |  | 10,047 |
Net Income (Loss) | 5,643 |  |  | 20,523 |  |  | 28 |  |  | 13,745 |
Net Income (Loss) Attributable to Common Stockholders | 3,414 |  |  | 16,708 |  |  | (2,389 | ) |  | 10,943 |
Earnings (loss) per share—Basic | $ | 0.48 |  |  | $ | 2.32 |  |  | $ | (0.34 | ) |  | $ | 1.67 |
Earnings (loss) per share—Diluted | $ | 0.46 |  |  | $ | 2.21 |  |  | $ | (0.34 | ) |  | $ | 1.62 |

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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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