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Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Deferred tax assets:    
Net operating loss carryforwards $ 8,833,000 $ 9,729,000
Credits 753,000 716,000
Capitalized research and development costs 18,000 122,000
Other acquired intangibles 91,000 134,000
Accruals not currently deductible 1,614,000 1,356,000
Total deferred tax assets 11,309,000 12,057,000
Valuation allowance for deferred tax assets (11,279,000) (12,032,274)
Net deferred tax assets 30,000 24,726
Deferred tax liability:    
Acquired intangibles 205,000 168,000
Net deferred tax liabilities $ 175,000 $ 143,274