Property and Equipment

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property and Equipment

3. PROPERTY AND EQUIPMENT

Property and equipment and accumulated depreciation and amortization were as follows (dollars in thousands):

	Year Ended December 31,
	2016			2015
Property and equipment
Buildings	$	48,250		$	28,154
Software and capitalized software costs		23,879			13,959
Computer equipment		18,987			11,346
Rental clocks		10,669			8,750
Furniture, fixtures and equipment		6,695			5,464
Leasehold improvements		680			358
Vehicles		—			421
		109,160			68,452
Less: accumulated depreciation and amortization		(35,833	)		(24,894	)
		73,327			43,558
Land		8,993			8,993
Construction in progress		14,528			6,307
Property and equipment, net	$	96,848		$	58,858

Included in the construction in progress balance at December 31, 2016 and 2015 is $1.1 and $0.4 million in retainage, respectively.

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 useful estimated lives.

Depreciation and amortization expense for property and equipment, net was $12.0 million, $7.8 million and $5.5 million for the years ended December 31, 2016, 2015 and 2014, respectively.