Other Current Assets (Tables)

9 Months Ended

Sep. 30, 2019

Other Current Assets Disclosure [Abstract]

Schedule of Other Current Assets [Table Text Block]

	As of  September 30,  2019		As of December 31, 2018
Prepaid expenses	$	259	$	241
Sales and use taxes	246		180
Other	155		183
Other current assets	$	660	$	604