Property and Equipment:

9 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

Property and Equipment [Text Block]

Property and Equipment

Property and equipment consisted of the following (in thousands): 

	September 30, 2021		December 31, 2020
Machinery and equipment	$	310,651	$	291,331
Land, building and building improvements	242,786		241,199
Molds	60,380		60,381
Computer equipment and software	99,781		98,311
Furniture and fixtures	7,686		7,767
Instruments placed with customers(1)	96,499		90,383
Construction in progress	61,890		53,724
Total property and equipment, cost	879,673		843,096
Accumulated depreciation	(421,632)		(376,468)
Property and equipment, net	$	458,041	$	466,628

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(1) Instruments placed with customers consist of drug-delivery and monitoring systems placed with customers under operating leases.

    Depreciation expense was $16.4 million and $49.1 million for the three and nine months ended September 30, 2021, respectively, as compared to $15.6 million and $46.7 million for the three and nine months ended September 30, 2020, respectively.