|
Debt - Additional Information (Details) (USD $)
|
1 Months Ended | 3 Months Ended | 0 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 0 Months Ended | 3 Months Ended | 1 Months Ended | 0 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Feb. 28, 2013
|
Mar. 31, 2014
|
Mar. 31, 2013
|
Mar. 17, 2014
|
Dec. 31, 2013
|
Aug. 30, 2013
Amended Credit Facilty with MidCap [Member]
|
Sep. 30, 2013
Amended Credit Facilty with MidCap [Member]
|
Mar. 31, 2014
Amended Credit Facilty with MidCap [Member]
|
Jul. 30, 2013
Amended Credit Facilty with MidCap [Member]
|
Mar. 31, 2014
Amended Credit Facilty with MidCap [Member]
Term Loan [Member]
|
Aug. 30, 2013
Amended Credit Facilty with MidCap [Member]
Term Loan [Member]
|
Aug. 30, 2013
Amended Credit Facilty with MidCap [Member]
Term Loan Drawn On Closing [Member]
|
Aug. 30, 2013
Amended Credit Facilty with MidCap [Member]
Term Loan. Delayed Draw [Member]
|
Mar. 31, 2014
Amended Credit Facilty with MidCap [Member]
Credit Facility [Member]
|
Aug. 30, 2013
Amended Credit Facilty with MidCap [Member]
Credit Facility [Member]
|
Mar. 20, 2014
Deerfield [Member]
|
Mar. 31, 2014
Deerfield [Member]
payment
|
Mar. 17, 2014
Deerfield [Member]
|
Mar. 17, 2014
Maximum [Member]
Deerfield [Member]
|
Apr. 01, 2014
Subsequent Event [Member]
Amended Credit Facilty with MidCap [Member]
Term Loan. Delayed Draw [Member]
|
Mar. 31, 2014
Orthotec LLC, Litigation Settlement [Member]
|
Apr. 10, 2014
Orthotec LLC, Litigation Settlement [Member]
Subsequent Event [Member]
|
|
| Line of Credit Facility [Line Items] | ||||||||||||||||||||||
| Maximum borrowing capacity | $ 73,000,000 | $ 50,000,000 | $ 33,000,000 | $ 28,000,000 | $ 5,000,000 | $ 40,000,000 | $ 50,000,000 | $ 5,000,000 | ||||||||||||||
| Length of period of term loan delayed draw | 12 months | |||||||||||||||||||||
| Repayments of Lines of Credit | 36,601,000 | 33,497,000 | 28,000,000 | |||||||||||||||||||
| Interest rate description | ( "LIBOR") plus 8.0% | LIBOR plus 6.0% | ||||||||||||||||||||
| Debt, spread on variable rate | 8.00% | 6.00% | ||||||||||||||||||||
| Floor on interest rate | 9.50% | |||||||||||||||||||||
| Interest rate of revolving line of credit | 9.50% | 6.20% | ||||||||||||||||||||
| Term loan payments | 300,000 | |||||||||||||||||||||
| Unamortized debt issuance and debt discount costs | 7,410,000 | 700,000 | ||||||||||||||||||||
| Debt issuance costs | 400,000 | |||||||||||||||||||||
| Additional interest rate to be charged in the event of default | 5.00% | |||||||||||||||||||||
| Amendment fee | 100,000 | |||||||||||||||||||||
| Aggregate amount of draw down for working capital | 15,000,000 | |||||||||||||||||||||
| Increment amount of draw down for general corporate purposes | 2,500,000.0 | |||||||||||||||||||||
| Transaction fee as percentage of principal amount | 2.50% | |||||||||||||||||||||
| Debt instrument, stated interest rate | 8.75% | |||||||||||||||||||||
| Number of securities called by warrants | 6,250,000 | |||||||||||||||||||||
| Number of securities called by warrants associated with each disbursement borrowing | 10,000,000 | |||||||||||||||||||||
| Amount of initial draw-down under Facility Agreement | 20,000,000 | |||||||||||||||||||||
| Net Proceeds from Initial Draw Under Facility Agreement | 19,500,000 | |||||||||||||||||||||
| Transaction fee | 500,000 | |||||||||||||||||||||
| Number of warrants issued | 4,000,000 | |||||||||||||||||||||
| Warrants value | 5,700,000 | 4,700,000 | ||||||||||||||||||||
| Warrant amount reclassified as debt discount | 2,300,000 | |||||||||||||||||||||
| Litigation Settlement, Expense | 1,750,000 | 15,750,000 | ||||||||||||||||||||
| Restricted cash | $ 17,750,000 | $ 0 | ||||||||||||||||||||
| Number of Equal Annual Payments to Make Under Facility Agreement | 3 | |||||||||||||||||||||