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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) - Schedule of Quarterly Results (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Selected Quarterly Financial Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total closing revenue | $ 781,613 |  | $ 669,956 |  | $ 597,801 |  | $ 518,712 |  | $ 698,918 |  | $ 556,776 |  | $ 505,604 |  | $ 408,345 |  | $ 2,568,082 |  | $ 2,169,643 |  | $ 1,814,659 |
Total closing gross profit | 152,075 |  | 126,244 |  | 114,749 |  | 95,641 |  | 140,281 |  | 110,761 |  | 110,003 |  | 91,572 |  | 488,709 |  | 452,617 |  | 396,418 |
Earnings before income taxes | 76,085 |  | 46,668 |  | 41,414 |  | 25,297 |  | 66,393 |  | 47,030 |  | 55,236 |  | 39,758 |  | 189,464 |  | 208,417 |  | 177,672 |
Net earnings | $ 52,897 |  | $ 30,308 |  | $ 29,133 |  | $ 16,400 |  | $ 49,208 |  | $ 32,577 |  | $ 35,079 |  | $ 25,377 |  | $ 128,738 |  | $ 142,241 |  | $ 124,464 |
Per Share Data: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share (in dollars per share) | $ 1.33 | [1] | $ 0.76 | [1] | $ 0.73 | [1] | $ 0.42 | [1] | $ 1.26 | [1] | $ 0.83 | [1] | $ 0.90 | [1] | $ 0.66 | [1] | $ 3.25 |  | $ 3.65 |  | $ 3.45 |
Diluted earnings per share (in dollars per share) | $ 1.26 | [1] | $ 0.73 | [1] | $ 0.70 | [1] | $ 0.40 | [1] | $ 1.19 | [1] | $ 0.79 | [1] | $ 0.85 | [1] | $ 0.62 | [1] | $ 3.09 | [2] | $ 3.46 | [2] | $ 3.25 | [2]
[1] | Due to the computation of earnings per share, the sum of the quarterly amounts may not equal the full-year results.
[2] | In accordance with ASC 260-10, Earnings Per Share, ("ASC 260-10") we calculate the dilutive effect of convertible securities using the "if-converted" method.

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