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v3.19.3.a.u2

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019 | Jan. 01, 2018 | Jan. 01, 2017
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |
Advertising costs | $ 5,900 | $ 5,200 | $ 4,900 |  |  |
Retained earnings | $ 405,668 | $ 338,995 |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | $ 1,582 | $ 274 | $ 0
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 | 13.00% | 14.00% |  |  |  |
Residential Products | Home Improvement Retail Company | Net sales |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |
Concentrations of credit risk | 12.00% | 12.00% | 12.00% |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |
Retained earnings |  |  |  |  | 274 |
Retained Earnings |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | 1,582 | $ 624 | $ 254
Retained Earnings | Accounting Standards Update 2016-02 |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | $ 1,600 |  |

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