Property and Equipment:

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment [Abstract]

Property and Equipment [Text Block]

Property and Equipment

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

	March 31, 2018			December 31, 2017
Machinery and equipment	$	236,234		$	220,999
Land, building and building improvements	207,922			206,846
Molds	56,431			56,253
Computer equipment and software	45,652			44,408
Furniture and fixtures	7,651			7,361
Instruments placed with customers*	15,521			15,812
Construction in progress	64,068			57,144
Total property and equipment, cost	633,479			608,823
Accumulated depreciation	(225,897		)	(210,139		)
Property and equipment, net	$	407,582		$	398,684

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*Instruments placed with customers consist of drug-delivery and monitoring systems placed with customer under operating leases.

Depreciation expense was $14.2 million and $8.2 million for the three months ended March 31, 2018 and 2017, respectively.