Annual report pursuant to Section 13 and 15(d)

Permit and Other Intangible Assets - Schedule of Intangible Assets (Details)

v3.8.0.1
Permit and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]      
Balance   $ 8,474 $ 16,761
PCB permit amortized [1]   (55) (55)
Permit in progress   56
Permit impairment for M&EC subsidiary (8,288)
Balance $ 8,419 $ 8,419 $ 8,474
[1] Amortization for the one definite-lived permit capitalized in 2009. This permit is being amortized over a ten year period in accordance with its estimated useful life. Net carrying value of this permit was approximately $62,000 and $117,000 as of December 31, 2017 and 2016, respectively.