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Debt and Line of Credit - Additional Information (Details) (USD $)
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3 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | |||||
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Mar. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
Senior Secured Credit Facility
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Jan. 31, 2014
Term Loan
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Mar. 31, 2014
Term Loan
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Dec. 31, 2012
Term Loan
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Mar. 31, 2014
Revolving Line of Credit Facility
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Dec. 31, 2013
Revolving Line of Credit Facility
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Dec. 31, 2012
Revolving Line of Credit Facility
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| Debt Instrument [Line Items] | |||||||||
| Senior secured credit facility, maximum borrowing capacity | $ 21,500,000 | $ 18,000,000 | $ 3,500,000 | ||||||
| Debt and line of credit maturity date | May 31, 2016 | ||||||||
| Debt instrument, payment terms | As discussed further in Note 7, the Company is contractually obligated to repay $16.2 million under the GE Secured Lending Facility by making monthly principal payments of $600,000 over the next 27 months. | The term loan included interest only payments for a period of 12 months, followed by monthly principal payments of approximately $600,000 for a period of 30 months, which the Company commenced paying in January 2014. | |||||||
| Debt instruments,date of first required payment | Jan. 31, 2014 | ||||||||
| Debt instrument, periodic principal payment | 600,000 | 600,000 | |||||||
| Term loan fixed interest rate | 7.50% | ||||||||
| Line of credit, interest rate description | the line of credit had an interest rate of 7.0% at March 31, 2014 and December 31, 2013, which is based on the variable rate of 5.5% plus the higher of (i) 1.5% and (ii) the three-month LIBOR determined as of two London business days divided by a number equal to 1.0 minus the aggregate of the rates of reserve requirements on the day that is two London business days prior to the beginning of the interest period for Eurocurrency funding that are required to be maintained by a member bank of the Federal Reserve System. | ||||||||
| Line of credit, interest rate | 7.00% | 7.00% | |||||||
| Line of credit variable rate, minimum | 5.50% | ||||||||
| Line of credit variable rate, spread | 1.50% | ||||||||
| Line of credit, available borrowing capacity | 86,000 | ||||||||
| Final payment fee for debt and line of credit | 720,000 | ||||||||
| Annual management fee per year | 15,000 | ||||||||
| Long-term debt outstanding including unamortized discount | 16,200,000 | ||||||||
| Long-term debt outstanding | 16,132,000 | 17,925,000 | |||||||
| Accrued amendment fees | $ 1,400,000 | $ 1,100,000 |