Property and Equipment

6 Months Ended

Jun. 30, 2020

Property, Plant and Equipment [Abstract]

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



	As of June 30, 2020			As of December 31, 2019
Computer equipment and software	$	211,516		$	203,242
Leasehold improvements	62,797			64,180
Furniture and fixtures	15,354			15,496
Machinery and equipment	465			465
Total property and equipment	290,132			283,383
Less: accumulated depreciation	(202,727		)	(189,571		)
Total property and equipment, net	$	87,405		$	93,812

Depreciation and amortization expense related to property, equipment and demonstration units during the three months ended June 30, 2020 and 2019 was $9.2 million and $9.4 million, respectively. Depreciation and amortization expense related to property, equipment and demonstration units during the six months ended June 30, 2020 and 2019 was $18.2 million and $18.5 million, respectively.

During the three months ended June 30, 2020 and 2019, we capitalized $5.2 million and $6.1 million, respectively, of software development costs primarily related to our platform and cloud subscription offerings. Amortization expense related to capitalized software development costs during the three months ended June 30, 2020 and 2019 were $4.7 million and $4.0 million, respectively.

During the six months ended June 30, 2020 and 2019, we capitalized $11.0 million and $11.6 million, respectively, of software development costs primarily related to our platform and cloud subscription offerings. Amortization expense related to capitalized software development costs during the six months ended June 30, 2020 and 2019 were $9.2 million and $7.5 million, respectively.

Refer to Note 6 Restructuring Charges regarding fixed assets write-offs.