Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Prepaid and Other Current Assets

	At December 31,
	2018		2017
Prepaid insurance	$	100	$	115
Prepaid expenses	94		91
Prepaid rent	4		4
Short-term deposits	825		386
Debt acquisition costs - short-term	71		—
Total prepaid and other current assets	$	1,094	596