Convertible Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Thousands |
6 Months Ended |
|
|
Jun. 30, 2015 |
Mar. 11, 2015 |
Dec. 31, 2014 |
| Convertible Preferred Stock |
|
|
|
| Number of Shares Authorized |
|
14,951,626
|
|
| Number of Shares Outstanding |
|
14,848,824
|
|
| Increase (Decrease) in Temporary Equity [Roll Forward] |
|
|
|
| Balance, beginning of period |
$ 25,476
|
|
|
| Conversion to common stock upon IPO |
(25,476)
|
|
|
| Balance, end of period |
$ 0
|
|
|
| Convertible Series A Preferred Stock |
|
|
|
| Convertible Preferred Stock |
|
|
|
| Number of Shares Authorized |
0
|
2,486,507
|
2,486,507
|
| Number of Shares Outstanding |
0
|
2,383,745
|
2,383,745
|
| Original Issue and Conversion Price per Share (in usd per share) |
|
$ 0.582
|
|
| Increase (Decrease) in Temporary Equity [Roll Forward] |
|
|
|
| Balance, beginning of period |
$ 1,387
|
|
|
| Conversion to common stock upon IPO |
(1,387)
|
|
|
| Balance, end of period |
$ 0
|
|
|
| Convertible Series B Preferred Stock |
|
|
|
| Convertible Preferred Stock |
|
|
|
| Number of Shares Authorized |
0
|
3,649,368
|
3,649,368
|
| Number of Shares Outstanding |
0
|
3,649,368
|
3,649,368
|
| Original Issue and Conversion Price per Share (in usd per share) |
|
$ 0.84656
|
|
| Increase (Decrease) in Temporary Equity [Roll Forward] |
|
|
|
| Balance, beginning of period |
$ 3,089
|
|
|
| Conversion to common stock upon IPO |
(3,089)
|
|
|
| Balance, end of period |
$ 0
|
|
|
| Convertible Series C Preferred Stock |
|
|
|
| Convertible Preferred Stock |
|
|
|
| Number of Shares Authorized |
0
|
5,406,501
|
5,406,501
|
| Number of Shares Outstanding |
0
|
5,406,501
|
5,406,501
|
| Original Issue and Conversion Price per Share (in usd per share) |
|
$ 1.4798
|
|
| Increase (Decrease) in Temporary Equity [Roll Forward] |
|
|
|
| Balance, beginning of period |
$ 8,000
|
|
|
| Conversion to common stock upon IPO |
(8,000)
|
|
|
| Balance, end of period |
$ 0
|
|
|
| Convertible Series D Preferred Stock |
|
|
|
| Convertible Preferred Stock |
|
|
|
| Number of Shares Authorized |
0
|
3,409,250
|
3,409,250
|
| Number of Shares Outstanding |
0
|
3,409,210
|
3,409,210
|
| Original Issue and Conversion Price per Share (in usd per share) |
|
$ 3.8132
|
|
| Increase (Decrease) in Temporary Equity [Roll Forward] |
|
|
|
| Balance, beginning of period |
$ 13,000
|
|
|
| Conversion to common stock upon IPO |
(13,000)
|
|
|
| Balance, end of period |
$ 0
|
|
|
| Initial Public Offering |
|
|
|
| Convertible Preferred Stock |
|
|
|
| Shares issued upon conversion |
|
14,848,824
|
|