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NOTE 11 - SHARE-BASED COMPENSATION (Details) (in thousands, except per share data) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Share-based compensation $ 400us-gaap_AllocatedShareBasedCompensationExpense $ 423us-gaap_AllocatedShareBasedCompensationExpense
Impact on net income: Basic and diluted $ (0.05)DAIO_ImpactNetIncomePerShareBasicAndDiluted $ (0.05)DAIO_ImpactNetIncomePerShareBasicAndDiluted
Cost Of Goods Sold    
Share-based compensation 6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember		 46us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_CostOfSalesMember
Research and Development Expense    
Share-based compensation 80us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember		 80us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
Selling, General and Administrative Expenses    
Share-based compensation $ 314us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember		 $ 297us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember