Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2018

Property Plant And Equipment [Abstract]

Depreciation and Amortization on Property and Equipment Using the Straight-Line Method

Depreciation on property and equipment is calculated using the straight-line method over the estimated useful lives of the assets, generally two to ten years. Leasehold improvements are amortized using the straight-line method over the shorter of the estimated useful life or the lease term.

	March 31,			December 31,
	2018			2017
Office furniture and fixtures	$	1,558		$	1,551
Software		3,227			3,068
Equipment		4,473			4,390
Leasehold improvements		1,718			1,720
Gross property and equipment		10,976			10,729
Less accumulated depreciation and amortization		(6,873	)		(6,493	)
Property and equipment, net	$	4,103		$	4,236