Business Segments (Detail Textuals) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($) Segment	Dec. 31, 2018 USD ($) Segment
Segment Reporting Information [Line Items]
Total identifiable assets	$ 43,948	$ 41,685
Number of operating segments | Segment	2	2
Operating Segments | ATG
Segment Reporting Information [Line Items]
Total identifiable assets	$ 33,521	$ 31,639
Operating Segments | CPG
Segment Reporting Information [Line Items]
Total identifiable assets	$ 10,427	$ 10,046