Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, plant and equipment, net consisted of the following as of the dates indicated (in thousands):


	December 31,
	2019		2018
Building and improvements	$	—	$	33,277
Capitalized internal-use software development costs	44,194		35,201
Furniture and fixtures	3,861		3,557
Computers and computer equipment	14,836		11,676
Leasehold improvements	8,393		5,084
Finance lease right-of-use assets	1,005		—
	72,289		88,795
Less: Accumulated depreciation and amortization	(52,554)		(44,576)
Property, plant and equipment, net	$	19,735	$	44,219

In connection with the adoption of ASC 842, the Company derecognized the building and improvements asset of $33.3 million as of January 1, 2019, which was initially recorded as a result of build-to-suit lease accounting and reclassified a portion of that balance, $1.4 million, to leasehold improvements. This amount reflects the lessee-owned assets of the construction project and is being depreciated over the remaining lease term.

Included in property, plant and equipment, net are finance lease right-of-use assets with a carrying amount of $0.4 million as of December 31, 2019.

The Company recorded the following amounts related to depreciation of fixed assets and capitalized internal-use software development costs during the periods indicated (in thousands):


	Year Ended December 31,
	2019		2018		2017
Depreciation expense	$	5,950	$	5,201	$	4,073
Capitalized internal-use software development costs	8,993		7,809		6,725
Amortization of capitalized internal-use software development costs	7,562		6,240		5,102

Stock-based compensation expense included in capitalized internal-use software development costs was $1.3 million for the year ended December 31, 2019 and $0.6 million for each of the years ended December 31, 2018 and 2017.