Annual report pursuant to Section 13 and 15(d)

Segment Reporting - Schedule of Revenue by Major Customers by Reporting Segments (Details)

v3.19.1
Segment Reporting - Schedule of Revenue by Major Customers by Reporting Segments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenues $ 49,539 $ 49,769
Treatment [Member]    
Revenues 36,271 37,750
Services [Member]    
Revenues 13,268 12,019
Domestic Government [Member]    
Revenues 34,811 37,019
Domestic Government [Member] | Treatment [Member]    
Revenues 25,181 27,956
Domestic Government [Member] | Services [Member]    
Revenues $ 9,630 $ 9,063