Share Capital	9 Months Ended
Sep. 30, 2019
Equity [Abstract]
Share Capital	7. Share Capital The Company had 55,677,088 authorized common shares as of September 30, 2019, with a par value of CHF 0.03 per share. Included in the authorized common shares as of September 30, 2019 are 256,989 treasury shares which are legally outstanding but not considered outstanding for accounting purposes and 230,729 shares registered and reserved for future issuance. The Company had conditional capital reserved for future issuance of 19,028,428 common shares for employee benefit plans and 4,919,700 common shares for debt instruments as of September 30, 2019. Under Swiss law, authorized share capital consisted of 25,134,003 common shares as of September 30, 2019. At-the-Market Offering In August 2018, the Company entered into an Open Market Sale Agreement^SM (the “2018 ATM”) with Jefferies LLC (“Jefferies”), under which Jefferies was able to offer and sell, from time to time, common shares having aggregate gross proceeds of up to $125.0 million. In the first quarter of 2019, the Company began to issue and sell securities under this sales agreement. During the three and nine months ended September 30, 2019, the Company sold 1,452,880 and 2,816,568 common shares, respectively, for net cash proceeds of $69.4 million and $121.9 million, respectively, after deducting commission fees of $1.5 million and $3.1 million, respectively. In addition, the Company paid approximately $0.5 million and $0.7 million in stamp taxes during the three and nine months ended September 30, 2019, respectively, and accrued an additional $0.7 million for stamp taxes as of September 30, 2019 related to securities sold under the 2018 ATM. In August 2019, following the termination of the 2018 ATM by its terms, the Company entered into a new Open Market Sale Agreement^SM with Jefferies (the “2019 ATM”), under which the Company may offer and sell, from time to time, common shares having aggregate gross proceeds of up to $200.0 million. The Company has not yet issued or sold any securities under the 2019 ATM.

Share Capital

9 Months Ended

Sep. 30, 2019

7. Share Capital

The Company had 55,677,088 authorized common shares as of September 30, 2019, with a par value of CHF 0.03 per share. Included in the authorized common shares as of September 30, 2019 are 256,989 treasury shares which are legally outstanding but not considered outstanding for accounting purposes and 230,729 shares registered and reserved for future issuance. The Company had conditional capital reserved for future issuance of 19,028,428 common shares for employee benefit plans and 4,919,700 common shares for debt instruments as of September 30, 2019. Under Swiss law, authorized share capital consisted of 25,134,003 common shares as of September 30, 2019.

At-the-Market Offering

In August 2018, the Company entered into an Open Market Sale Agreement^SM (the “2018 ATM”) with Jefferies LLC (“Jefferies”), under which Jefferies was able to offer and sell, from time to time, common shares having aggregate gross proceeds of up to $125.0 million. In the first quarter of 2019, the Company began to issue and sell securities under this sales agreement. During the three and nine months ended September 30, 2019, the Company sold 1,452,880 and 2,816,568 common shares, respectively, for net cash proceeds of $69.4 million and $121.9 million, respectively, after deducting commission fees of $1.5 million and $3.1 million, respectively. In addition, the Company paid approximately $0.5 million and $0.7 million in stamp taxes during the three and nine months ended September 30, 2019, respectively, and accrued an additional $0.7 million for stamp taxes as of September 30, 2019 related to securities sold under the 2018 ATM.

In August 2019, following the termination of the 2018 ATM by its terms, the Company entered into a new Open Market Sale Agreement^SM with Jefferies (the “2019 ATM”), under which the Company may offer and sell, from time to time, common shares having aggregate gross proceeds of up to $200.0 million. The Company has not yet issued or sold any securities under the 2019 ATM.