Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting [Abstract]
Number of reportable business segments	1	1
Revenues from Operations [Abstract]
Frequency control devices - USA	$ 15,087	$ 15,645
Frequency control devices - Foreign	14,619	20,037
Total consolidated revenues	29,706	35,682
Operating Income from Operations [Abstract]
Consolidated total operating income	(1,782)	674
Interest expense, net	(89)	(109)
Other income	27	2
Other loss	(62)	(107)
Income Before Income Taxes	(1,844)	567
Capital Expenditures [Abstract]
Total capital expenditures	906	1,694
Total Assets [Abstract]
Total assets	29,593	32,421
Frequency control devices [Member]
Operating Income from Operations [Abstract]
Consolidated total operating income	(345)	2,558
Capital Expenditures [Abstract]
Total capital expenditures	505	1,211
Total Assets [Abstract]
Total assets	19,493	16,276
General corporate [Member]
Capital Expenditures [Abstract]
Total capital expenditures	401	483
Total Assets [Abstract]
Total assets	10,100	15,808
Total assets from discontinued operations and Lynch Systems' remaining assets [Member]
Total Assets [Abstract]
Total assets	0	337
Unallocated corporate expense [Member]
Operating Income from Operations [Abstract]
Consolidated total operating income	$ (1,437)	$ (1,884)