Equity (Details)
$ / shares in Units, $ in Thousands |
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1 Months Ended |
3 Months Ended |
9 Months Ended |
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Sep. 30, 2019
$ / shares
shares
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Jul. 20, 2018
USD ($)
$ / shares
shares
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Jul. 31, 2018
shares
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Sep. 30, 2018
shares
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Sep. 30, 2019
Vote
$ / shares
shares
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Sep. 30, 2018
USD ($)
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Aug. 01, 2019
USD ($)
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Dec. 31, 2018
$ / shares
shares
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Jun. 30, 2018
shares
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Apr. 30, 2018
shares
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Feb. 28, 2018
shares
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Jan. 31, 2018
shares
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| Equity |
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| Number of votes per share | Vote |
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1
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| Common stock, authorized (in shares) |
150,000,000
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150,000,000
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150,000,000
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150,000,000
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79,000,000
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78,800,000
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75,000,000
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65,000,000
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| Shares authorized |
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160,000,000
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| Common stock, par value (in dollars per share) | $ / shares |
$ 0.001
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$ 0.001
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$ 0.001
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$ 0.001
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| Preferred stock, share authorized (in shares) |
10,000,000
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10,000,000
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10,000,000
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10,000,000
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| Preferred stock, par value (in dollars per share) | $ / shares |
$ 0.001
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$ 0.001
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$ 0.001
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$ 0.001
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| Net proceeds after deducting underwriting discounts and commissions and other offering costs | $ |
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$ 257,866
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| Common stock |
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| Equity |
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| Shares issued (in shares) |
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12,055,450
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| Conversion of redeemable convertible preferred stock to common stock (in shares) |
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51,845,438
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51,845,438
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51,845,438
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| IPO |
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| Equity |
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| Shares issued (in shares) |
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12,055,450
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| Net proceeds after deducting underwriting discounts and commissions and other offering costs | $ |
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$ 254,300
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| Conversion of redeemable convertible preferred stock to common stock (in shares) |
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131,273
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| IPO | Common stock |
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| Equity |
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| Shares issued (in shares) |
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12,055,450
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| Overallotment |
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| Equity |
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| Shares issued (in shares) |
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1,572,450
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| At the market offering |
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| Equity |
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| Shares issued (in shares) |
0
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| Percentage of commission |
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3.00%
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| Aggregate offering price | $ |
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$ 100,000
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