Accrued Expenses (Details Textual) - USD ($) $ in Thousands |
1 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2015 |
Jan. 31, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Accrued Expenses [Line Items] | ||||||
| Payments to acquire businesses, net of cash acquired | $ 400 | $ 3,600 | ||||
| Headsprout | ||||||
| Accrued Expenses [Line Items] | ||||||
| Acquisition accrual payment | $ 4,000 | |||||
| Payments to acquire businesses, net of cash acquired | $ 400 | $ 3,600 | ||||
| Senior Notes | ||||||
| Accrued Expenses [Line Items] | ||||||
| Senior secured notes, interest rate | 9.75% | 9.75% | 9.75% | |||