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