Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

Note F — Property, Plant, and Equipment, Net

Property, plant, and equipment, net were comprised of the following:

	As of December 31,
(in thousands)	2019		2018
Land	$	634	$	644
Buildings(1)		4,110		24,558
Furniture and fixtures		13,835		13,121
Machinery and equipment		25,438		27,452
Equipment leased to third parties under operating leases		29,217		30,093
Leasehold improvements		131,617		111,247
Computers and software		75,540		69,173
Total property, plant, and equipment, gross		280,391		276,288
Less: accumulated depreciation and amortization		(196,334)		(186,799)
Total property, plant, and equipment, net	$	84,057	$	89,489

(1) As discussed in Note A - “Organization and Summary of Significant Accounting Policies”, the new lease standard resulted in the removal of assets associated with build-to-suit leases.

Total depreciation expense was approximately $30.6 million, $29.7 million, and $29.7 million for the years ended December 31, 2019, 2018, and 2017, respectively.

The following table summarizes our investment in equipment leased to third parties under operating leases:

	As of December 31,
(in thousands)	2019		2018
Program equipment	$	29,217	$	30,093
Less: Accumulated depreciation		(12,972)		(14,712)
Net book value	$	16,245	$	15,381