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Organization - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended |  | 0 Months Ended |  |
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Feb. 10, 2014 | Sep. 30, 2014 Segment | Dec. 31, 2013 | Sep. 30, 2014 Revenue [Member] Residential Construction Sales [Member] | Sep. 30, 2013 Revenue [Member] Residential Construction Sales [Member] | Sep. 30, 2014 Revenue [Member] Residential Construction Sales [Member] | Sep. 30, 2013 Revenue [Member] Residential Construction Sales [Member] | Sep. 30, 2014 Revenue [Member] Commercial Construction Sales [Member] | Sep. 30, 2013 Revenue [Member] Commercial Construction Sales [Member] | Sep. 30, 2014 Revenue [Member] Commercial Construction Sales [Member] | Sep. 30, 2013 Revenue [Member] Commercial Construction Sales [Member] | Feb. 19, 2014 IPO [Member] | Feb. 19, 2014 IPO [Member] Revolving Credit Facility [Member] | Jun. 17, 2014 Secondary Public Offering [Member] | Jun. 17, 2014 Secondary Public Offering [Member] | Jun. 17, 2014 Secondary Public Offering [Member] Selling Stockholder [Member] | Jun. 17, 2014 Secondary Public Offering [Member] Underwriters Option To Purchase Additional Shares [Member] | Feb. 10, 2014 Shares Prior to Stock Split [Member] | Feb. 10, 2014 Stock Split [Member] | Sep. 30, 2014 UNITED STATES Location
Basis Of Presentation And Organization [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of locations the company operates |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100
Number of operating segment |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segment |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenues percentage |  |  |  | 89.10% | 89.50% | 88.80% | 88.80% | 10.90% | 10.50% | 11.20% | 11.20% |  |  |  |  |  |  |  |  |
Stock split description | 19.5-for-one |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock split ratio | 19.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares issued |  | 31,839,087 | 16,183,901 |  |  |  |  |  |  |  |  | 8,567,500 |  |  |  |  |  | 1,129,944 | 22,033,901 |
Common stock, shares outstanding |  | 31,839,087 | 16,183,901 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,129,944 | 22,033,901 |
Proceeds from issuance of IPO |  | $ 87,645 |  |  |  |  |  |  |  |  |  | $ 87,645 |  |  |  |  |  |  |  |
Payment to redeem redeemable preferred stock |  | 75,735 |  |  |  |  |  |  |  |  |  | 75,735 |  |  |  |  |  |  |  |
Proceeds from IPO used to pay underwriting fees |  |  |  |  |  |  |  |  |  |  |  | 6,597 |  |  |  |  |  |  |  |
Payment of revolving credit facility |  |  |  |  |  |  |  |  |  |  |  |  | 11,910 |  |  |  |  |  |  |
Common stock, price per share |  |  |  |  |  |  |  |  |  |  |  | $ 11.00 |  |  |  |  |  |  |  |
Secondary Public Offering, Shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,314,196 |  | 8,100,000 | 1,214,196 |  |  |
Secondary Public Offering, Share Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12.50 |  |  |  |  |
Proceeds from secondary public offering of common stock, net of costs |  | $ 14,418 |  |  |  |  |  |  |  |  |  |  |  | $ 14,418 |  |  |  |  |  |

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