Warrants (Details) - USD ($) $ / shares in Units, $ in Millions |
9 Months Ended | ||
|---|---|---|---|
Sep. 30, 2016 |
Dec. 31, 2015 |
Jan. 30, 2009 |
|
| Class of Warrant or Right [Line Items] | |||
| Preferred Stock, Shares Sold (in shares) | 0 | 266,657 | |
| Series C Preferred Stock | |||
| Class of Warrant or Right [Line Items] | |||
| Preferred Stock, Shares Sold (in shares) | 266,657 | ||
| Preferred stock, total exercise price of warrant | $ 267 | ||
| May Investors | |||
| Class of Warrant or Right [Line Items] | |||
| Warrants exercised (in shares) | 32,721 | ||
| Warrants outstanding (in shares) | 583,240 | ||
| Exercise price of warrants (in usd per share) | $ 10 | ||
| Liability from warrants | $ 10 | $ 8 | |
| May Investors | Common Stock | |||
| Class of Warrant or Right [Line Items] | |||
| Shares, Issued | 21,068 | ||
| Troubled Asset Relief Program | |||
| Class of Warrant or Right [Line Items] | |||
| Exercise price of warrants (in usd per share) | $ 62.00 | ||
| Number of shares auctioned by warrants | 645,138 |