Restatement Charges - Summary of Change to Accrued Liability Balance Related to Restatement Charges (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Restatement Charges Reserve | ||||||
| Beginning balance | $ 0 | |||||
| Additions for costs expensed, net | $ 9,900 | $ 12,300 | $ 7,900 | 18,879 | $ 0 | $ 0 |
| Reductions for payments, net | (16,667) | |||||
| Ending balance | $ 2,212 | $ 2,212 | $ 0 | |||