Property And Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property And Equipment

Property and equipment as of December 31, 2017 and 2016 consist of the following (in thousands):

	2017			2016
Machinery and equipment	$	307,244		$	301,367
Land, buildings and improvements	78,522			73,709
Furniture and fixtures	10,264			10,100
Leasehold improvements	9,947			12,054
	405,977			397,230
Less allowance for depreciation	(325,961		)	(321,871		)
	$	80,016		$	75,359

Machinery and equipment includes demonstration equipment recorded as fixed assets and depreciated to their estimated recoverable values over their estimated useful lives. These demonstration units are placed in provider locations for longer periods of time and thus classified as property and equipment.