PROPERTY, PLANT, AND EQUIPMENT, NET (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property, plant, and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. The useful lives are as follows:



Category		Useful Life (in years)
Leasehold improvements ⁽¹⁾		Various
Buildings		45-60
Building improvements		10-20
Office equipment		3-10
Software		3-10
Machinery and equipment		4-12

(1) Useful lives for leasehold improvements are amortized over the shorter of the economic lives or the term of the lease.

Information regarding the Company's property, plant and equipment is as follows (in thousands):



	December 31,
	2018			2017
Land	$	11,985		$	12,489
Leasehold improvements	59,604			54,995
Buildings	68,852			67,465
Office equipment	19,533			18,193
Software	43,436			40,378
Machinery and equipment	237,194			243,939
Construction-in-progress	52,730			32,481
Property, plant and equipment	493,334			469,940
Accumulated depreciation	(278,381		)	(269,310		)
Property, plant, and equipment, net	$	214,953		$	200,630