Note 2 - Summary of Operating Results (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 26, 2016	Mar. 28, 2015
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Net sales		$ 4,621
Operating loss before income taxes		(914)
Loss from sale of BMS		(100)
Loss before taxes		(1,014)
Income tax provision		6
Loss, net of tax		(1,020)
Loss, net of tax		$ (1,020)

Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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