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Property, Plant and Equipment (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | $ 563,745 | $ 550,922 |
Less accumulated depreciation and amortization |  | 318,388 | 299,907 |
Property Plant and Equipment Excluding Capital Projects in Progress |  | 245,357 | 251,015 |
Capital projects in progress |  | 9,240 | 22,005 |
Property, plant and equipment, net |  | 254,597 | 273,020 |
Fully Depreciated Property, Plant and Equipment, Original Cost |  | 196,800 | 189,900 |
Proceeds from Sale of Property Held-for-sale | $ 17,500 |  |  |
Depreciation |  | 33,300 | 27,300 | $ 21,600
Software Development [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | 39,100 | 20,500 |
Capital projects in progress |  | 3,600 | 12,200 |
Land [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | 30,034 | 33,087 |
Buildings and site improvements |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | 198,809 | 212,817 |
Leasehold Improvements [Member] |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | 4,826 | 4,684 |
Machinery and equipment |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |
Property, Plant and Equipment, Gross |  | $ 330,076 | $ 300,334 |

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- Definition Represents the aggregate of long-lived physical assets excluding capital projects in progress used in the normal conduct of business and not intended for resale. + References No definition available. + Details
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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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