Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Summary of Lease Expenses

	March 31, 2019
Lease expenses:
Operating lease expenses	$	784
Variable lease expenses		307
Total lease expenses	$	1,091

Summary of Other Information

	March 31, 2019
Other information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	10
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	$	81
Finance leases	$	134
Weighted-average remaining lease term:
Operating leases	8.5 years
Finance leases	2.0 years
Weighted-average remaining discount rate:
Operating leases		10.0	%
Finance leases		9.2	%

Future Minimum Annual Obligations under Finance and Operating Lease Commitments

Lease Maturities:
	Operating Leases			Finance Leases			Total
Remaining in 2019	$	2,363		$	55		$	2,418
2020		3,231			74			3,305
2021		3,247			18			3,265
2022		3,333		—				3,333
2023		3,433		—				3,433
2024		3,536		—				3,536
Thereafter		10,284		—				10,284
Total minimum lease payments		29,427			147			29,574
Imputed interest		(9,957	)		(13	)		(9,970	)
Total		19,470			134			19,604
Less: leases, current		(3,171	)		(74	)		(3,245	)
Leases, net of current	$	16,299		$	60		$	16,359