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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Jan. 01, 2018
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Revenue recognized under the percentage-of-completion method |  | 28.00% | 25.80% |  |
Advertising costs |  | $ 4,900,000 | $ 5,100,000 | $ 4,700,000 |
Research and development cost |  | 2,900,000 | 2,200,000 | 900,000 |
Net cash provided by operating activities |  | 70,070,000 | 123,987,000 | 87,221,000 |
Net cash (used in) provided by financing activities |  | (2,598,000) | 1,348,000 | (721,000) |
Selling, General and Administrative Expense |  | $ (143,448,000) | $ (161,099,000) | $ (133,381,000) |
Minimum | Land, Buildings and Improvements |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Estimated useful lives |  | 15 years |  |  |
Minimum | Machinery and Equipment |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Estimated useful lives |  | 3 years |  |  |
Maximum | Land, Buildings and Improvements |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Estimated useful lives |  | 40 years |  |  |
Maximum | Machinery and Equipment |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Estimated useful lives |  | 20 years |  |  |
Residential Products | Home Improvement Retail Company | Accounts Receivable |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Concentrations of credit risk |  | 13.60% | 13.70% |  |
Residential Products | Home Improvement Retail Company | Net sales |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Concentrations of credit risk |  | 12.00% | 11.00% | 11.00% |
First quarter 2015 Sale Leaseback |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Sale price | $ 26,400,000 |  |  |  |
Period of lease | 5 years |  |  |  |
Net present value of future minimum lease payments | $ 5,800,000 |  |  |  |
Deferred gain on sale | 13,100,000 |  |  |  |
Gain above minimum lease payments fair value | 7,400,000 |  |  |  |
Minimum lease payment for first year | 1,378,000,000 |  |  |  |
Minimum lease payments year 2 | 1,378,000,000 |  |  |  |
Minimum lease payments year 3 | 1,378,000,000 |  |  |  |
Minimum lease payments year 4 | 1,378,000,000 |  |  |  |
Minimum lease payments year 5 | $ 1,378,000,000 |  |  |  |
Accounting Standards Update 2016-09 |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Net cash provided by operating activities |  |  | $ 1,249,000 | $ 537,000 |
Net cash (used in) provided by financing activities |  |  | 1,249,000 | 573,000 |
Accounting Standards Update 2016-09 | Additional Paid-In Capital |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | 254,000 |  |
Subsequent Event | Accounting Standards Update 2014-09 |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  |  | $ 750,000
Pro Forma | Accounting Standards Update 2017-07 |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |
Selling, General and Administrative Expense |  |  | 524,000 | 647,000 |
Other Expenses |  |  | $ 524,000 | $ 647,000 |

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