Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Segment	Dec. 31, 2012
Segment Reporting [Abstract]
Number of reportable business segments	1
Revenues from Operations [Abstract]
Frequency control devices - USA	$ 13,797	$ 15,087
Frequency control devices - Foreign	12,404	14,619
Total consolidated revenues	26,201	29,706
Operating Loss from Operations [Abstract]
Consolidated total operating loss	(4,164)	(1,782)
Interest expense, net	(43)	(89)
Other (expense) income, net	(64)	27
Other loss	(107)	(62)
Loss Before Income Taxes	(4,271)	(1,844)
Capital Expenditures [Abstract]
Total capital expenditures	448	906
Total Assets [Abstract]
Total assets	21,263	29,593
Frequency control devices [Member]
Operating Loss from Operations [Abstract]
Consolidated total operating loss	(2,480)	(345)
Capital Expenditures [Abstract]
Total capital expenditures	448	505
Total Assets [Abstract]
Total assets	16,053	19,493
General corporate [Member]
Capital Expenditures [Abstract]
Total capital expenditures	0	401
Total Assets [Abstract]
Total assets	5,210	10,100
Unallocated corporate expense [Member]
Operating Loss from Operations [Abstract]
Consolidated total operating loss	$ (1,684)	$ (1,437)