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Stockholders' Equity (Details Textual) (USD $)
 3 Months Ended 71 Months Ended 74 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Mar. 31, 2014
Mar. 31, 2014
Registered Direct Offering [Member]
Mar. 31, 2014
Consultant Plan [Member]
Dec. 31, 2013
Consultant Plan [Member]
May 02, 2013
Consultant Plan [Member]
Feb. 28, 2014
Equity Incentive Plan [Member]
Mar. 31, 2014
Equity Incentive Plan [Member]
Dec. 31, 2013
Equity Incentive Plan [Member]
Mar. 31, 2014
Legal Fees [Member]
Class of Stock [Line Items]                        
Stock Issued During Period, Value, New Issues     $ 13,800,000   $ 6,500,000              
Net proceeds from Issuance of Common Stock 5,800,000                      
Warrants Authorized For Issuance To Acquire Common Stock Shares Number 20,313     345,000                
Exercise Price Of Warrants $ 10.00                      
Warrants Authorized For Issuance To Acquire Common Stock Value 92,000     128,000                
Stock Issued During Period, Value, Issued for Noncash Considerations                       113,000
Common Stock, Shares Authorized 62,500,000     62,500,000                
Issuance costs of initial public offering 800,000                      
Preferred Stock, Shares Authorized 2,000,000     2,000,000                
Share Based Compensation Arrangement By Share Based Payment Award Purchase Price Share Minimum 85.00%                      
Common Stock, Capital Shares Reserved for Future Issuance 991,300     991,300                
Increase Decrease Of Share Based Compensation Arrangement By Share Based Payment Award Percentage 10.00%                      
Share-based Compensation Outstanding - Reserved but unissued shares under the Plan 685,310   565,765 685,310   75,287 75,287 75,000        
Declining Repurchase Rights Per Share $ 0.0001     $ 0.0001                
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized 1,006,000     1,006,000                
Declining Repurchase Rights Value 40,000   44,000 40,000                
Stock Issued During Period Shares Issued For Services           11,250            
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Subject To Repurchase Rights Decline                   14,625    
General And Administrative Expense Related To Stock Grant           72,000            
Common Stock For Services Per Share Issue Seven     $ 9.12                  
Stock Issued During Period, Value, Issued For Services           102,000            
Adjustments to Additional Paid in Capital Stock Issued Registered Direct Offering 812,500                      
Stock Issued In Registered Direct Offering Price Per Share $ 8.00                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross                 122,880      
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Fair Value                 $ 9.90 $ 10.26    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term                 10 years      
Share Base Compensation Arrangements By Share Based Payments Awards Granted                 721,000      
Share-Based Compensation 81,000 39,000   549,000           45,000    
Shares Reserved Unissued 126,537     126,537                
Selling, General and Administrative Expense, Total 37,000                      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 3 months 18 days                      
Stock Issued During Period Shares For Services Two           7,000            
Common Stock For Services Per Share Issue Nine $ 10.26         $ 10.26            
Placement Agent Fees 488,000                      
Payments for Placement Agent Legal Fees 75,000                      
Other Cost and Expense, Operating 44,000                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period                   3,335    
Shares Issued, Price Per Share                   $ 4.88    
Stock Issued During Period, Value, Stock Options Exercised 16,000                 16,000    
Stock or Unit Option Plan Expense 18,000 0                    
Stock Option Plan Description           The Consultant Plan provides for quarterly increases in the available number of authorized shares equal to the lesser of 1% of any new shares issued by the Company during the quarter immediately prior to the adjustment date or such lesser amount as the Board of Directors shall determine.            
Share Based Compensation Arrangement By Share Based Payment Award Stock Grants In Period                   179,456 175,799  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number                   356,409 317,354  
Stock Granted During Period, Value, Share-Based Compensation, Gross       $ 275,000           $ 150,000