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Summary of Significant Accounting Policies:Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,107,257		$ 1,064,339
Less accumulated depreciation	(630,308)		(577,115)
Property and equipment, net	476,949	$ 465,492	487,224
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	39,304		38,888
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 140,008		164,878	[1]
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	$ 61,187		49,509
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	$ 165,445		150,712
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	$ 666,467		629,337
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	$ 34,846		$ 31,015
[1] As of December 31, 2018, capital lease assets were included in the "Buildings" asset class. For additional information related to leases, see Note 11, Leases

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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