Borrowings (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of borrowings

A summary of the Company’s borrowings, including capital lease obligations, is as follows:

	At December 31,
Short-term debt:	2016		2015
NAU Promissory Note	$	—	$	—
Current portion of long-term debt		45		27
Total short-term debt	$	45	$	27
Long-term debt:
Capital lease obligations	$	51	$	72
Other unsecured promissory notes		132		400
Other promissory notes		—		5
Total		183		477
Less: current portion of long-term debt		45		27
Total long-term debt	$	138	$	450