Description of Company and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Property and Equipment Useful Life

Depreciation is generally provided over the following estimated useful service lives:

Land improvements	10 - 20 years
Buildings	15 - 45 years
Machinery and equipment	3 - 20 years

Depreciation expense was recorded as follows:

(amounts in thousands)	2019		2018		2017
Cost of sales	$	84,449	$	85,357	$	78,975
Selling, general and administrative	9,882		8,699		7,835
Total depreciation expense	$	94,331	$	94,056	$	86,810

(amounts in thousands)	2019			2018
Land improvements	$	34,211		$	34,060
Buildings	502,315			501,659
Machinery and equipment	1,369,174			1,306,555
Total depreciable assets	1,905,700			1,842,274
Accumulated depreciation	(1,188,209		)	(1,138,898		)
	717,491			703,376
Land	69,262			69,188
Construction in progress	77,622			70,839
Total property and equipment, net	$	864,375		$	843,403

Schedule of Finite-Lived Intangible Assets Useful Life

Definite lived intangible assets are amortized based on the pattern of economic benefit over the following estimated useful lives:

Trademarks and trade names	3 - 40 years
Software	1 - 15 years
Licenses and rights	2 - 14 years
Customer relationships	1 - 16 years
Patents	3 - 25 years

Changes in the carrying amount of intangible assets were as follows for the periods indicated:

(amounts in thousands)
Balance as of December 31, 2017	$	166,313
Acquisitions	70,057
Acquisition remeasurements	(1,363		)
Additions, (net of $172 write-offs)	24,553
Amortization	(22,208		)
Currency translation	(11,799		)
Balance as of December 31, 2018	$	225,553
Acquisitions	17,702
Acquisition remeasurements	5,735
Additions, (net of $112 write-offs)	33,796
Amortization	(30,956		)
Currency translation	(1,503		)
Balance as of December 31, 2019	$	250,327

The cost and accumulated amortization values of our intangible assets were as follows as of December 31:

	2019
(amounts in thousands)	Cost		Accumulated Amortization			Net Book Value
Customer relationships and agreements	$	151,540	$	(57,326	)	$	94,214
Software	92,821		(18,222		)	74,599
Trademarks and trade names	58,088		(7,512		)	50,576
Patents, licenses and rights	45,392		(14,454		)	30,938
Total amortizable intangibles	$	347,841	$	(97,514	)	$	250,327

	2018
(amounts in thousands)	Cost		Accumulated Amortization			Net Book Value
Customer relationships and agreements	$	134,999	$	(45,418	)	$	89,581
Software	62,147		(14,053		)	48,094
Trademarks and trade names	57,513		(5,050		)	52,463
Patents, licenses and rights	47,804		(12,389		)	35,415
Total amortizable intangibles	$	302,463	$	(76,910	)	$	225,553