Annual report pursuant to Section 13 and 15(d)

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

v3.19.1
Permit and Other Intangible Assets - Schedule of Intangible Assets (Details) (Parenthetical)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]    
Finite-lived intangible asset, useful life 10 years 10 years