Stockholders' Equity (Deficit) Stockholders' Equity (Deficit) - Initial Public Offering (Details) - IPO [Member] - Class B [Member] shares in Millions |
Mar. 19, 2014
$ / shares
shares
|
Mar. 19, 2014
$ / shares
shares
|
|---|---|---|
| Class of Stock [Line Items] | ||
| Issuance of common stock upon initial public offering, net of issuance costs (in shares) | shares | 12.8 | 12.8 |
| Share price (in dollars per share) | $ / shares | $ 16.00 | $ 16.00 |