10.

Lease

The Company has operating lease for offices in the United States and China with remaining lease term of approximately

4.6

years and

year, respectively. The operating lease in China includes option to extend the leases that have

not

been included in the calculation of the Company’s lease liabilities and ROU assets. Total lease expenses were

$142

and

$210

for the

three

and

six

months ended

June 30, 2018

and were

$195

and

$397

for the

three

and

six

months ended

June 30, 2019,

respectively.

Supplemental balance sheet information related to leases was as follows:

	As of June 30,
	2019
	$

Operating lease ROU asset		2,855

Current portion of operating lease liabilities		535
Operating lease liabilities		2,264
Total lease liabilities		2,799

Maturities of operating lease liabilities are as follows:

	$

Six months ending December 31, 2019		249
Year ending December 31, 2020		780
Year ending December 31, 2021		786
Year ending December 31, 2022		789
Year ending December 31, 2023		793
Total lease payments		3,397
Less imputed interest		(598	)

Present value of lease liabilities		2,799

Other supplemental information related to leases is summarized below:

	Six months ended
	June 30, 2019
	$

Operating cash flows used in operating lease		434

	As of June 30,
	2019

Weighted average remaining lease term (years)		3.81
Weighted average discount rate		9.05	%

The Company adopted the Lease ASUs effective

January 1, 2019

and did

not

restate prior periods. The undiscounted future minimum payments under non-cancelable operating leases as of

December 31, 2018,

prior to the adoption of the Lease ASUs was as follows: