Property and Equipment (Tables)

12 Months Ended

Dec. 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.

	December 31,			December 31,
	2018			2017
Office furniture and fixtures	$	1,626		$	1,551
Software		3,686			3,068
Equipment		4,814			4,390
Leasehold improvements		1,721			1,720
Gross property and equipment		11,847			10,729
Less accumulated depreciation and amortization		(7,892	)		(6,493	)
Property and equipment, net	$	3,955		$	4,236

Future Minimum Lease Payments under Non-Cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases are as follows:

	Operating
Year ending December 31:	Leases
2019	$	1,055
2020		899
2021		838
2022		862
2023		867
Thereafter		218
Total minimum lease payments	$	4,739

Operating Leases Rent Expense

Rent expense on the operating leases was as follows:

	Year Ended		Year Ended
	December 31,		December 31,
	2018		2017
Rent expense	$	1,104	$	1,194