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Selected Quarterly Data (Unaudited) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Data (Unaudited) | Selected Quarterly Data (Unaudited)
| 2016
| Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
($ in thousands, except share data) |  |  |  |  |  |  |
Revenues | $ | 79,850 |  |  | $ | 82,324 |  |  | $ | 80,085 |  |  | $ | 80,295 |
Operating Income | 12,783 |  |  | 16,538 |  |  | 8,743 |  |  | 12,750 |
Net Income Attributable to Common Stockholders | 12,426 |  |  | 15,625 |  |  | 8,088 |  |  | 12,363 |
Earnings (loss) per share—Basic | $ | 1.94 |  |  | $ | 2.04 |  |  | $ | 0.99 |  |  | $ | 1.48 |
Earnings (loss) per share—Diluted | $ | 1.87 |  |  | $ | 1.99 |  |  | $ | 0.97 |  |  | $ | 1.45 |
| 2015
| Fourth Quarter |  | Third Quarter |  | Second Quarter |  | First Quarter
($ in thousands, except share data) |  |  |  |  |  |  |
Revenues | $ | 86,115 |  |  | $ | 92,375 |  |  | $ | 99,656 |  |  | $ | 103,831 |
Operating Income | 16,506 |  |  | 23,112 |  |  | 16,208 |  |  | 24,542 |
Net Income (Loss) Attributable to Common Stockholders | 6,636 |  |  | (649 | ) |  | 9,777 |  |  | 19,342 |
Earnings per share—Basic | $ | 0.78 |  |  | $ | (0.07 | ) |  | $ | 1.10 |  |  | $ | 2.16 |
Earnings per share—Diluted | $ | 0.76 |  |  | $ | (0.07 | ) |  | $ | 1.08 |  |  | $ | 2.11 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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