Customer List Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 4 Months Ended | 5 Months Ended | 9 Months Ended |
|---|---|---|---|---|
Sep. 30, 2014 |
Apr. 23, 2015 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
| Consumer CLEC Business | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization | $ 1,141 | $ 1,283 | $ 3,488 | |
| Customer Lists | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization | $ 1,600 | |||
| Estimated amortization expense for 2015 | 2,600 | |||
| 2016 | 3,300 | |||
| 2017 | 2,600 | |||
| 2018 | 2,000 | |||
| 2019 | $ 1,400 | |||
| Customer Lists | Consumer CLEC Business | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization | $ 1,100 | $ 1,300 | $ 3,500 |