Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value) (Details)

v2.4.0.8
Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value) (Details) (USD $)
Jun. 30, 2014
Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents $ 5,198,202 $ 5,991,869
Current Liabilities, fair value   (558,801)
Assets (Liabilities) Net, fair value 21,698,970 15,096,360
Level 1 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 5,198,202 5,751,965
Assets (Liabilities) Net, fair value 5,198,202 5,751,965
Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents   239,904
Assets (Liabilities) Net, fair value 16,500,768 9,903,196
Level 3 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current Liabilities, fair value   (558,801)
Assets (Liabilities) Net, fair value   (558,801)
Money Market Funds [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 5,198,202 5,751,965
Money Market Funds [Member] | Level 1 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents 5,198,202 5,751,965
Certificates Of Deposit [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents   239,904
Certificates Of Deposit [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash equivalents   239,904
Accrued Consideration [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current Liabilities, fair value   (558,801)
Accrued Consideration [Member] | Level 3 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Current Liabilities, fair value   (558,801)
Short-Term Investments [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 5,876,551 5,742,314
Short-Term Investments [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 5,876,551 5,742,314
Short-Term Investments [Member] | Certificates Of Deposit [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 2,881,947 2,582,502
Short-Term Investments [Member] | Certificates Of Deposit [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 2,881,947 2,582,502
Short-Term Investments [Member] | Corporate Notes And Bonds [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 2,994,604 3,159,812
Short-Term Investments [Member] | Corporate Notes And Bonds [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 2,994,604 3,159,812
Long Term Investments [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 10,624,217 3,920,978
Long Term Investments [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 10,624,217 3,920,978
Long Term Investments [Member] | Certificates Of Deposit [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 3,081,152 1,197,320
Long Term Investments [Member] | Certificates Of Deposit [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 3,081,152 1,197,320
Long Term Investments [Member] | Corporate Notes And Bonds [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments 7,543,065 2,723,658
Long Term Investments [Member] | Corporate Notes And Bonds [Member] | Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Investments $ 7,543,065 $ 2,723,658