Property and Equipment

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT

Property and equipment and accumulated depreciation and amortization were as follows:


	December 31, 2022			December 31, 2021
Property and equipment
Software and capitalized software costs	$	270,645		$	199,470
Buildings		177,765			172,807
Computer equipment		133,715			102,509
Rental clocks		35,846			30,313
Furniture, fixtures and equipment		28,414			24,971
Other		17,321			16,397
		663,706			546,467
Less: accumulated depreciation and amortization		(331,340	)		(242,652	)
		332,366			303,815
Construction in progress		36,286			11,342
Land		33,796			33,796
Property and equipment, net	$	402,448		$	348,953

We capitalize computer software development costs related to software developed for internal use in accordance with ASC 350-40. For the years ended December 31, 2022 and 2021, we capitalized $66.4 million and $52.9 million, respectively, of computer software development costs related to software developed for internal use.

Rental clocks included in property and equipment, net represent time clocks issued to clients under month-to-month operating leases. As such, these items are transferred from inventory to property and equipment and depreciated over their estimated useful lives.

We capitalize interest incurred for indebtedness related to construction in progress. For the years ended December 31, 2022, 2021 and 2020, we incurred interest costs of $3.4 million, $1.4 million and $1.5 million, respectively. For the years ended December 31, 2022, 2021 and 2020, interest cost of $0.9 million, $1.4 million and $1.5 million, respectively, was capitalized. Included in the construction in progress balance at December 31, 2022 and 2021 is $2.0 million and $0.1 million in retainage, respectively.

Depreciation and amortization expense for property and equipment, net was $88.7 million, $64.7 million and $53.2 million for the years ended December 31, 2022, 2021 and 2020, respectively.