Condensed Consolidated Balance Sheets Balance Sheet Parenthetical - USD ($) $ in Thousands |
Sep. 30, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Allowance for Doubtful Accounts Receivable | $ 895 | $ 888 |
| Preferred Stock, Par Value (in USD Per Share) | $ 0.0001 | $ 0.0001 |
| Preferred Stock, Shares Authorized | 10,000,000 | 10,000,000 |
| Preferred Stock, Shares Issued | 0 | 0 |
| Common Class B [Member] | ||
| Common Stock, Par Value (in USD Per Share) | $ 0.0001 | $ 0.0001 |
| Common Stock, Shares Authorized | 75,000,000 | 75,000,000 |
| Common Stock, Shares Issued | 18,336,609 | 19,331,666 |
| Common Stock, Shares Outstanding | 18,336,609 | 19,331,666 |
| Common Class A [Member] | ||
| Common Stock, Par Value (in USD Per Share) | $ 0.0001 | $ 0.0001 |
| Common Stock, Shares Authorized | 750,000,000 | 750,000,000 |
| Common Stock, Shares Issued | 57,737,702 | 53,872,798 |
| Common Stock, Shares Outstanding | 57,737,702 | 53,872,798 |