Business Segments (Detail Textuals) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013 Segment	Dec. 31, 2012
Segment Reporting Information [Line Items]
Number of operating segments	2
Total identifiable assets	$ 30,406	$ 29,303
Operating Segments | Advanced Technology Group
Segment Reporting Information [Line Items]
Total identifiable assets	19,973	19,211
Operating Segments | Consumer Products Group
Segment Reporting Information [Line Items]
Total identifiable assets	$ 10,433	$ 10,092