Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Components of Lease Costs

The components of lease costs, which were included in our condensed consolidated statements of operations, were as follows (in thousands):

	Three Months Ended June 30, 2019		Six Months Ended June 30, 2019
Lease costs
Operating lease cost	$	496	$	995
Short-term lease cost(1)	220		548
Sublease income	(145)		(290)
Total	$	571	$	1,253

⁽¹⁾ Short-term lease cost included $0.2 million related to a short-term lease that expired in March 2019.

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities as of June 30, 2019 and lease commitments under noncancellable operating leases as of December 31, 2018 were as follows (in thousands):

	June 30, 2019		December 31, 2018
2019 (remaining 6 months and 12 months, respectively)	$	1,164	$	1,777
2020	1,788		1,788
2021	1,839		1,839
2022	1,894		1,894
2023	1,951		1,951
Thereafter	7,111		7,296
Total lease payments	15,747		$	16,545
Less imputed interest	(3,159)
Total operating lease liabilities	$	12,588

	June 30, 2019
Current portion of operating lease liabilities	$	1,402
Operating lease liabilities, net of current portion	11,186
Total lease liabilities	$	12,588