Term Loan	3 Months Ended
Mar. 31, 2013
Term Loan
Term Loan	(8) Term Loan The Term Loan accrues interest at a fixed annual interest rate equal to the greater of (i) the sum of (A) the LIBOR Rate (as defined in the Loan Agreement) plus (B) 6.25%; or (ii) a minimum rate of 9.50%. In March 2012, the Company amended the Loan Agreement to extend the maturity date from December 2013 to December 2014 in return for an upfront fee of $25,000 and an additional fee of $37,500 (the “Final Payment Fee”) due upon repayment of the Term Loan in full. Interest on the Term Loan is payable monthly and principal is due, as amended, in equal consecutive monthly installments. All unpaid principal and accrued interest with respect to the Term Loan is due and payable on the earlier of (A) December 30, 2014 or (B) the date that the Term Loan otherwise becomes due and payable under the terms of the Loan Agreement. The Company may prepay all, but not less than all, of the Term Loan subject to a prepayment premium of 1% in year three of the Term Loan. There is no prepayment premium if the loan is paid off early in year four. The Company is also obligated to make a payment fee of $0.5 million (the “Payment Fee”) upon the earlier of (A) December 30, 2013 or (B) upon repayment of the Term Loan in full prior to December 30, 2013. The Company is accreting the Payment Fee ratably over the original term of the Term Loan to interest expense. Interest expense on the Term Loan including the accretion of the Payment Fee and Final Payment Fee and amortization of the deferred financing costs was $0.3 million and $0.4 million for the three months ended March 31, 2013 and 2012, respectively. The obligations of the Company under the Loan Agreement are collateralized by a first priority lien upon and security interest in substantially all of the Company’s existing and after-acquired assets, excluding its intellectual property assets. Under the Loan Agreement, the Company is subject to specified affirmative and negative covenants customary for financings of this type. The Loan Agreement provides that, upon the occurrence of certain specified events of default customary for financings of this type, the Company’s obligations under the Loan Agreement may be automatically accelerated, whereupon the Company’s obligations under the Loan Agreement shall be immediately due and payable. At March 31, 2013, the Company believes it is in compliance with the Loan Agreement.

(8) Term Loan

The Term Loan accrues interest at a fixed annual interest rate equal to the greater of (i) the sum of (A) the LIBOR Rate (as defined in the Loan Agreement) plus (B) 6.25%; or (ii) a minimum rate of 9.50%. In March 2012, the Company amended the Loan Agreement to extend the maturity date from December 2013 to December 2014 in return for an upfront fee of $25,000 and an additional fee of $37,500 (the “Final Payment Fee”) due upon repayment of the Term Loan in full. Interest on the Term Loan is payable monthly and principal is due, as amended, in equal consecutive monthly installments. All unpaid principal and accrued interest with respect to the Term Loan is due and payable on the earlier of (A) December 30, 2014 or (B) the date that the Term Loan otherwise becomes due and payable under the terms of the Loan Agreement. The Company may prepay all, but not less than all, of the Term Loan subject to a prepayment premium of 1% in year three of the Term Loan. There is no prepayment premium if the loan is paid off early in year four. The Company is also obligated to make a payment fee of $0.5 million (the “Payment Fee”) upon the earlier of (A) December 30, 2013 or (B) upon repayment of the Term Loan in full prior to December 30, 2013. The Company is accreting the Payment Fee ratably over the original term of the Term Loan to interest expense. Interest expense on the Term Loan including the accretion of the Payment Fee and Final Payment Fee and amortization of the deferred financing costs was $0.3 million and $0.4 million for the three months ended March 31, 2013 and 2012, respectively.

The obligations of the Company under the Loan Agreement are collateralized by a first priority lien upon and security interest in substantially all of the Company’s existing and after-acquired assets, excluding its intellectual property assets. Under the Loan Agreement, the Company is subject to specified affirmative and negative covenants customary for financings of this type. The Loan Agreement provides that, upon the occurrence of certain specified events of default customary for financings of this type, the Company’s obligations under the Loan Agreement may be automatically accelerated, whereupon the Company’s obligations under the Loan Agreement shall be immediately due and payable. At March 31, 2013, the Company believes it is in compliance with the Loan Agreement.