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Note 3 - Relocation (Details Narrative) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 29, 2015	Dec. 31, 2015	Dec. 31, 2014
Note 3 - Relocation Details Narrative
Government reimbursement received - China factory move			$ 815,000ULBI_GovernmentGrantReimbursementCashReceivedInConnectionWithChinaFactoryMove
Government reimbursement recognized - China factory move	61,000ULBI_GovernmentGrantReimbursementRevenueRecognizedAsReductionofExpenseInConnectionWithChinaFactoryMove		596,000ULBI_GovernmentGrantReimbursementRevenueRecognizedAsReductionofExpenseInConnectionWithChinaFactoryMove
Expenses recognized - China factory move	109,000ULBI_ExpensesRecognizedInConnectionWithChinaFactoryMove		841,000ULBI_ExpensesRecognizedInConnectionWithChinaFactoryMove
Estimated expenses to be incurred - China factory move		158,000ULBI_EstimatedExpensesRemainingToBeRecognizedInConnectionWithChinaFactoryMove
Estimated revenue to be recognized - China move		$ 158,000ULBI_EstimatedRevenueRemainingToBeRecognizedInConnectionWithChinaFactoryMove

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