Quarterly report pursuant to Section 13 or 15(d)

Notes Payable (Narrative) (Details)

v2.4.0.8
Notes Payable (Narrative) (Details) (USD $)
3 Months Ended 6 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Mar. 31, 2014
Oxford Finance, LLC
Jun. 30, 2014
Oxford Finance, LLC
Jun. 30, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2015
Jun. 30, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2016
Jun. 30, 2014
Oxford Loan Agreement, Amortization Date of April 1, 2017
Jun. 30, 2014
Series KK Warrants and other fees to lenders
Mar. 31, 2014
Second Amended Platinum Note
Jun. 30, 2014
Second Amended Platinum Note
Mar. 31, 2014
Second Amended Platinum Note
Base Rate
Mar. 31, 2014
Second Amended Platinum Note
Oxford Loan Agreement, Interest Rate
Mar. 31, 2014
GECC, MidCap Financial SBIC and LP (MidCap)
Jun. 30, 2014
GECC, MidCap Financial SBIC and LP (MidCap)
Jun. 30, 2014
Oxford Finance, LLC
Series KK warrants
Debt Instrument [Line Items]                                    
Debt face amount             $ 30,000,000                      
Debt instrument, interest rate             8.50%                      
Number of shares underlying warrant issued                                   391,032
Exercise price of warrant issued, dollars per share                                   1.918
Debt Instrument, Term               48 months 36 months 24 months                
Debt Instrument, Final Payment Multiplier; Percent item type               7.95% 8.95% 9.95%                
Notes Payable             30,000,000           3,200,000          
Debt Instrument, Unamortized Discount (Premium), Net                     3,000,000              
Unamortized debt discount 809,560   809,560   743,062   2,700,000                      
Deferred Finance Costs, Net             108,000                      
Debt issuance cost           120,000                        
Repayments of Long-term Debt                               26,700,000    
Debt Instrument, pre-payment Fee, Fee Amount                                 500,000  
Debt Instrument, end-of-term, Fee Amount                                 1,000,000  
Interest Expense, Debt 914,000 465,000 1,900,000 828,000                            
Interest rate in addition to Prime rate                           6.75% 0.125%      
Debt Instrument, Interest Rate, Stated Percentage                       10.00%            
Derivative, Gain (Loss) on Derivative, Net (4,000) 0 (3,000)                   298,000          
Long-term Debt, Fair Value                         3,900,000          
Debt Instrument, Unused Borrowing Capacity, Amount                         31,800,000          
Interest Expense Recorded Related To Amortization $ 195,000 $ 121,000 $ 437,000 $ 243,000