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Summary of Significant Accounting Policies (Details Textual)
 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2013
USD ($)
Customer
Jun. 30, 2012
USD ($)
Customer
Jun. 30, 2013
USD ($)
Customer
Jun. 30, 2012
USD ($)
Customer
Dec. 31, 2012
Customer
Jun. 30, 2012
Amazon [Member]
Jun. 30, 2012
Amazon [Member]
Jun. 30, 2013
Kobo Inc [Member]
Jun. 30, 2012
Kobo Inc [Member]
Jun. 30, 2013
Kobo Inc [Member]
Jun. 30, 2013
Sony Corporation [Member]
Jun. 30, 2012
Sony Corporation [Member]
Jun. 30, 2013
Sony Corporation [Member]
Jun. 30, 2012
Sony Corporation [Member]
Jun. 30, 2013
Netronix Inc [Member]
Jun. 30, 2013
Netronix Inc [Member]
Jun. 30, 2013
BYD Precision Manufacture Company Limited [Member]
Jun. 30, 2013
Minimum [Member]
Jun. 30, 2013
Maximum [Member]
Jun. 30, 2013
US [Member]
USD ($)
Jun. 30, 2013
Sweden [Member]
EUR (€)
Jun. 30, 2013
Japan [Member]
JPY (¥)
Summary of Significant Accounting Policies (Textual)                                            
Basic deposit coverage limits per owner and customer                                       $ 250,000 € 100,000 ¥ 10,000,000
Entity-Wide Revenue, Major Customer, Percentage           53.00% 53.00% 18.00% 11.00% 27.00% 13.00% 11.00% 15.00% 13.00% 16.00% 18.00% 11.00%          
Percentage of net revenues earned from major customers 10.00% 10.00% 10.00% 10.00%                                    
Days of reporting period stipulated in the contract                                   30 days 45 days      
Excess of insurance limits 5,000,000   5,000,000                                      
Gains or (losses) resulting from foreign currency transactions 87,000 73,000 124,000 11,000                                    
Foreign currency translation gain (loss) 41,000 (72,000) 54,000 (28,000)                                    
Accounts receivable due, Number of aggregate customers     12   15                                  
Accounts receivable, Number of major customer     3   10                                  
Revenue earned, Number of customers 17 12 20 16                                    
Percentage of accounts receivable due by three major customers 54.00%   54.00%                                      
Advertising costs $ 5,000 $ 129,000 $ 85,000 $ 282,000                                    
Weighted-average exchange rate for consolidated statements of operations (Swedish Krona to one U.S. Dollar) 6.56 6.95 6.50 6.85                                    
Exchange rate for the consolidated balance sheets (Swedish Krona to one U.S. Dollar) 6.70   6.70   6.52                                  
Weighted-average exchange rate for consolidated statements of operations (Japanese Yen to one U.S. Dollar) 98.75   95.49                                      
Exchange rate for the consolidated balance sheets (Japanese Yen to one U.S. Dollar) 99.1   99.1