Note 2 - Summary of Balance Sheet Information of Discontinued Video Camera Segment (Details) - USD ($) $ in Thousands	Dec. 26, 2015	Dec. 27, 2014
Broadcast Microwave Services, Inc. (“BMS”) [Member]
Accounts receivable, net		$ 3,156
Inventories		6,345
Other current assets		817
Total current assets		10,318
Deferred Profit		504
Other accrued current liabilities		2,279
Total current liabilities		2,783
Noncurrent liabilities		706
Total liabilities		3,489
Total current assets		10,318
Total current liabilities		2,783
Noncurrent liabilities		$ 706