v2.4.0.8
Investment (Details Textual) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Qualstar Corporation [Member]
Jun. 30, 2013
Qualstar Corporation [Member]
Jul. 03, 2013
Qualstar Corporation [Member]
Jun. 30, 2014
Interlink Electronics Inc [Member]
Chief Executive Officer [Member]
Equity Method Investment, Ownership Percentage             18.30%  
Investment Owned, Balance, Shares (in shares)         2,815,120      
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum         22.97%      
Investment Owned, at Fair Value (in dollars)         $ 633,000      
Investment Owned, Face Amount (in dollars)         3,700,000      
Income (Loss) from Equity Method Investments (499,000) (603,000) (557,000) (909,000) 499,000 909,000    
Common Stock Held For Investment Value               1,234,000
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax 549,000 0 606,000 0       549,000
Development Stage Entities, Stock Issued, Shares, Issued for Cash               4,975
Proceeds from Issuance or Sale of Equity               44,000
Available-for-sale Securities, Gross Realized Gain (Loss)               $ 35,000
Earnings Per Share, Basic and Diluted, Total $ (0.07) $ (0.11) $ (0.09) $ (0.18) $ 0.18