Domestic and Foreign Revenues (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Entity Wide Revenue Major Customer [Line Items] | ||
Revenues from operations | $ 22,402 | $ 20,891 |
Domestic [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
Revenues from operations | 16,090 | 14,893 |
Foreign [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
Revenues from operations | $ 6,313 | 5,998 |
Foreign [Member] | Sales Revenue, Segment [Member] | Customer Concentration Risk [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
Portion of foreign sales | 10.00% | |
Malaysia [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
Revenues from operations | $ 3,038 | 3,240 |
All other foreign countries [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
Revenues from operations | $ 3,275 | $ 2,758 |