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Supplementary Financial Data Supplementary Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2019
Supplementary Financial Data [Abstract] |
Supplemental Financial Data [Table Text Block] | The following tables set forth our selected consolidated financial and operating data for the quarterly periods indicated.
| March 31, 2019 | June 30, 2019 | September 30, 2019 | December 31, 2019
(In thousands, except per share amounts) | (Unaudited) | (Unaudited) | (Unaudited) | (Unaudited)
Revenue | $ | 481,109 |  | $ | 623,686 |  | $ | 653,345 |  | $ | 742,150 |
Gross margin (a) | $ | 92,642 |  | $ | 119,829 |  | $ | 134,181 |  | $ | 142,775 |
Net income to common shareholders (a) | $ | 17,723 |  | $ | 30,246 |  | $ | 37,838 |  | $ | 41,780 |
Earnings per common share: (c) |  |  |  |  |  |  |  |
Basic | $ | 0.64 |  | $ | 1.10 |  | $ | 1.35 |  | $ | 1.48 |
Diluted | $ | 0.63 |  | $ | 1.08 |  | $ | 1.32 |  | $ | 1.44 |
Weighted average common shares outstanding: |  |  |  |  |  |  |  |
Basic | 27,498 |  | 27,599 |  | 27,981 |  | 28,297 |
Diluted | 27,970 |  | 28,090 |  | 28,598 |  | 29,049 |
| March 31, 2018 | June 30, 2018 | September 30, 2018 | December 31, 2018
(In thousands, except per share amounts) | (Unaudited) | (Unaudited) | (Unaudited) | (Unaudited)
Revenue | $ | 437,857 |  | $ | 558,098 |  | $ | 567,842 |  | $ | 722,485 |
Gross margin (b) | $ | 89,155 |  | $ | 108,762 |  | $ | 115,813 |  | $ | 130,039 |
Net income to common shareholders (b) | $ | 18,063 |  | $ | 27,911 |  | $ | 29,282 |  | $ | 32,407 |
Earnings per common share: (c) |  |  |  |  |  |  |  |
Basic | $ | 0.64 |  | $ | 0.98 |  | $ | 1.03 |  | $ | 1.17 |
Diluted | $ | 0.60 |  | $ | 0.96 |  | $ | 1.01 |  | $ | 1.15 |
Weighted average common shares outstanding: |  |  |  |  |  |  |  |
Basic | 28,124 |  | 28,571 |  | 28,469 |  | 27,774 |
Diluted | 30,544 |  | 29,101 |  | 28,906 |  | 28,181 |
(a) | Gross margin and net income to common shareholders include $0.4 million, $0.1 million and $0.1 million of charges related to acquisition-related charges taken during 2019 as a result of our acquisition of Pinnacle Homes in Detroit, Michigan on March 1, 2018 (as more fully discussed in Note 12 to our Consolidated Financial Statements) taken during the first, second and third quarters of 2019, respectively, and $5.0 million of impairment charges taken during the fourth quarter of 2019.
(b) | Gross margin and net income to common shareholders include $0.9 million, $3.0 million, $0.7 million and $0.6 million of charges related to acquisition-related charges taken during 2018 as a result of our acquisition of Pinnacle Homes on March 1, 2018 taken during the first, second, third and fourth quarters of 2018, respectively, and $5.8 million of impairment charges taken during the fourth quarter of 2018.
(c) Due to rounding, the sum of quarterly results may not equal the total for the year. Additionally, quarterly and year-to-date computations of per share amounts are made independently.

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