Condensed Consolidated Balance Sheets Balance Sheet Parenthetical - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| 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 |
| Allowance for Doubtful Accounts Receivable | $ 1,006 | $ 1,111 |
| 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 | 20,559,166 | 22,620,509 |
| Common stock, shares outstanding | 20,559,166 | 22,620,509 |
| 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 | 51,222,204 | 47,247,710 |
| Common stock, shares outstanding | 51,222,204 | 47,247,710 |