Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Details)

v3.8.0.1
Notes Payable (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Notes payable, current portion $ 382 $ 405
Notes payable, non-current portion 8,763 8,839
Thermo Fisher Financial Service [Member]    
Notes payable, current portion 100 128
Notes payable, non-current portion 11
Green Bank [Member]    
Notes payable, current portion 282 277
Notes payable, non-current portion $ 8,763 $ 8,828