Equity (Details)
$ / shares in Units, $ in Millions |
|
1 Months Ended |
6 Months Ended |
|
|
|
|
|
|
Jul. 20, 2018
USD ($)
$ / shares
shares
|
Jul. 31, 2018
shares
|
Jun. 30, 2019
Vote
$ / shares
shares
|
Dec. 31, 2018
$ / shares
shares
|
Jun. 30, 2018
shares
|
Apr. 30, 2018
shares
|
Feb. 28, 2018
shares
|
Jan. 31, 2018
shares
|
| Equity |
|
|
|
|
|
|
|
|
| Number of votes per share | Vote |
|
|
1
|
|
|
|
|
|
| Common stock, authorized (in shares) |
150,000,000
|
|
150,000,000
|
150,000,000
|
79,000,000
|
78,800,000
|
75,000,000
|
65,000,000
|
| Shares authorized |
160,000,000
|
|
|
|
|
|
|
|
| Common stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
|
$ 0.001
|
$ 0.001
|
|
|
|
|
| Preferred stock, share authorized (in shares) |
10,000,000
|
|
10,000,000
|
10,000,000
|
|
|
|
|
| Preferred stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
|
$ 0.001
|
$ 0.001
|
|
|
|
|
| Common stock |
|
|
|
|
|
|
|
|
| Equity |
|
|
|
|
|
|
|
|
| Conversion of redeemable convertible preferred stock to common stock (in shares) |
51,845,438
|
51,845,438
|
|
|
|
|
|
|
| IPO |
|
|
|
|
|
|
|
|
| Equity |
|
|
|
|
|
|
|
|
| Shares issued (in shares) |
12,055,450
|
|
|
|
|
|
|
|
| Net proceeds after deducting underwriting discounts and commissions and other offering costs | $ |
$ 254.3
|
|
|
|
|
|
|
|
| Conversion of redeemable convertible preferred stock to common stock (in shares) |
|
131,273
|
|
|
|
|
|
|
| IPO | Common stock |
|
|
|
|
|
|
|
|
| Equity |
|
|
|
|
|
|
|
|
| Shares issued (in shares) |
12,055,450
|
|
|
|
|
|
|
|
| Overallotment |
|
|
|
|
|
|
|
|
| Equity |
|
|
|
|
|
|
|
|
| Shares issued (in shares) |
1,572,450
|
|
|
|
|
|
|
|