3. Property and Equipment, Net

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


	December 31,
	2018			2017
Computer equipment	$	2,459		$	1,917
Software		6,419			4,238
Furniture and fixtures		1,053			791
Leasehold improvements		818			466

		10,749			7,412
Less: Accumulated depreciation and amortization		(6,268	)		(5,283	)

	$	4,481		$	2,129

Depreciation and amortization expense was $1.3 million and $1.4 million for the years ended December 31, 2018 and 2017, respectively. The Company capitalized costs associated with the development of internal use software of $2.5 million and $0.7 million included in the Software line item above and recorded related amortization expense of $0.6 million and $0.5 million (included in depreciation and amortization expense) during the years ended December 31, 2018 and 2017, respectively. The remaining net book value of capitalized software costs was $2.9 million and $1.0 million as of December 31, 2018 and 2017, respectively.