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Segment Information (Details) | 6 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 USD ($) segment | Sep. 30, 2017 USD ($) reporting_unit segment | Apr. 03, 2017 USD ($) | Dec. 31, 2016 USD ($)
Business Acquisition [Line Items] |  |  |  |
Number of reportable segments | segment | 2 | 2 |  |
Number of operating segments | segment |  | 2 |  |
Number of reporting units | reporting_unit |  | 2 |  |
Goodwill | $ 85,277,000 | $ 85,277,000 |  | $ 54,820,000
Tealstone |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business combination, pro forma information, revenue of acquiree since acquisition date, actual | 92,900,000 |  |  |
Business combination, pro forma information, earnings or loss of acquiree since acquisition date, actual | $ 13,200,000 |  |  |
Goodwill |  |  | $ 30,500,000.0 |
Residential Construction |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Revenue recognition, contract term |  | 1 month |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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