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v3.19.3.a.u2

Nature of Operations and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2019
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Interest costs charged to expense | $ 368 | $ 364 | $ 321 | $ 252 | $ 338 | $ 334 | $ 289 | $ 207 | $ 1,305 | $ 1,168 | $ 1,184 |
Plus: Interest cost capitalized |  |  |  |  |  |  |  |  | 575 | 562 | 293 |
Total |  |  |  |  |  |  |  |  | 1,880 | 1,730 | $ 1,477 |
Debt instrument, fair value disclosure | 42,534 |  |  |  | 32,018 |  |  |  | 42,534 | 32,018 |  |
Long-term debt, including current maturities | 41,060 |  |  |  | 32,014 |  |  |  | 41,060 | 32,014 |  |
Operating lease right-of-use assets, net | 6,490 |  |  |  | $ 0 |  |  |  | 6,490 | $ 0 |  |
Total operating lease liability | $ 6,511 |  |  |  |  |  |  |  | $ 6,511 |  |  |
ASU 2016-02 |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Operating lease right-of-use assets, net |  |  |  |  |  |  |  |  |  |  |  | $ 6,598
Total operating lease liability |  |  |  |  |  |  |  |  |  |  |  | $ 6,952
Minimum | Commodity Contract |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Length of time hedged in commodity hedge |  |  |  |  |  |  |  |  | 1 month |  |  |
Maximum | Commodity Contract |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Length of time hedged in commodity hedge |  |  |  |  |  |  |  |  | 24 months |  |  |
Building and improvements | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 10 years |  |  |
Building and improvements | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 30 years |  |  |
Machinery and equipment | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 3 years |  |  |
Machinery and equipment | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 10 years |  |  |
Office furniture and equipment | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 5 years |  |  |
Office furniture and equipment | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 10 years |  |  |
Computer equipment and software | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 3 years |  |  |
Computer equipment and software | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 5 years |  |  |
Motor vehicles |  |  |  |  |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 5 years |  |  |

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