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Summary of Significant Accounting Policies:Property and Equipment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | $ 1,064,339 |  | $ 1,064,339 |  | $ 1,059,533
Less accumulated depreciation |  | (577,115) |  | (577,115) |  | (493,741)
Property and equipment, net |  | 487,224 |  | 487,224 |  | 565,792
Land [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | 38,888 | [1] | 38,888 | [1] | 38,606
Buildings [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross | [2] | 164,878 | [1] | $ 164,878 | [1] | 144,404
Buildings [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 20 years |  |
Buildings [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 40 years |  |
Improvements [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | 49,509 | [1] | $ 49,509 | [1] | 55,267
Improvements [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 10 years |  |
Improvements [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 15 years |  |
Mobile equipment, information technology, and office furniture [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | 150,712 | [1] | $ 150,712 | [1] | 138,245
Mobile equipment, information technology, and office furniture [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 3 years |  |
Mobile equipment, information technology, and office furniture [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 7 years |  |
Machinery and equipment [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | 629,337 | [1] | $ 629,337 | [1] | 659,708
Machinery and equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 7 years |  |
Machinery and equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  | 12 years |  |
Construction in Progress [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Property and equipment, gross |  | 31,015 | [1] | $ 31,015 | [1] | $ 23,303
Wood Products [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Accelerated depreciation |  | $ 55,000 |  |  |  |
[1] | The following activity impacted property and equipment during 2018:•On November 2, 2018, we closed on the sale of two lumber mills and a particleboard plant, and related property and equipment, located in Northeast Oregon. For more information, see Note 7, Sale of Manufacturing Facilities.•We recorded $55.0 million of accelerated depreciation to fully depreciate the curtailed LVL production assets at our Roxboro, North Carolina facility during fourth quarter 2018. For more information, see Note 6, Curtailment of Manufacturing Facility.•As of December 31, 2018, property and equipment at our hardwood plywood facility in Moncure, North Carolina, has been classified as assets held for sale and excluded from these property and equipment balances. For more information, see Note 7, Sale of Manufacturing Facilities.
[2] | Capital lease assets are included in the "Buildings" asset class.

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