12. Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Lease cost

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Operating lease cost	$	143	$	134	$	287	$	268
Short-term lease cost		—		6		2		10
Variable lease cost		32		31		63		63
Total lease cost	$	175	$	171	$	352	$	341

Supplemental cash flow information related to leases

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows (fixed payments)	$	122	$	118	$	243	$	236
Operating cash flows (liability reduction)		83		78		164		156
ROU assets obtained in exchange for lease obligations:
Operating leases		26		—		35		2,840

Other information related to operating leases

	June 30, 2020
Weighted average remaining lease term (in years)		6.60
Weighted average discount rate		5.50	%

Maturity of lease liabilities

	June 30, 2020
Remaining six months of 2020	$	281
2021		560
2022		447
2023		456
2024		464
Thereafter		1,193
Total payments		3,401
Less: imputed interest		558
Total liability	$	2,843