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Long-term debt - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified |
1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 1 Months Ended | 3 Months Ended | 3 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Oct. 12, 2012
|
Mar. 31, 2014
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May 31, 2011
Term Loan A
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Mar. 31, 2014
Term Loan A
|
Dec. 31, 2013
Term Loan A
|
May 31, 2012
Term Loan B
|
Mar. 31, 2014
Term Loan B
|
Dec. 31, 2013
Term Loan B
|
Nov. 30, 2013
Term Loan C
|
Mar. 31, 2014
Term Loan C
|
Dec. 31, 2013
Term Loan C
|
Mar. 31, 2014
AR Revolver
|
Mar. 31, 2014
Term Loan
|
Mar. 31, 2014
New Term Loan
LIBOR
|
|
| Debt Instrument [Line Items] | ||||||||||||||
| Percentage of commitment fee | 1.00% | |||||||||||||
| Amount of commitment fee | $ 120 | |||||||||||||
| Maximum borrowing capacity | 12,000 | 3,000 | 8,000 | 12,000 | 1,000 | |||||||||
| Percentage of line of credit on accounts receivable | 80.00% | |||||||||||||
| Term loan Interest rate description | Each term loan bears interest at the Base Rate, which is a rate equal to the applicable margin plus the greater of (i) the prime rate, (ii) the federal funds effective rate, as defined in the agreement, plus 1% and (iii) the daily adjusting LIBOR rate, plus 1%. | |||||||||||||
| Percentage of margin rate | 1.25% | 2.50% | 2.25% | 1.00% | 1.00% | |||||||||
| Net of principal payments | 3,000 | 8,000 | 12,000 | |||||||||||
| Amount outstanding | $ 167 | $ 417 | $ 3,111 | $ 3,778 | $ 5,166 | $ 5,666 | $ 0 | |||||||
| Repayment terms | Payment of principal is payable monthly over a period of 36 months starting November 2013. | |||||||||||||
| Revolving line of credit expiration date | Apr. 11, 2014 | Oct. 13, 2013 | ||||||||||||
| Term loan interest rate, percentage | 4.50% | 4.50% | 5.75% | 5.75% | 5.50% | 5.50% | ||||||||