Stock-based compensation - Narrative (Detail) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2021	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increased number of issuance of awards under the 2013 Plan (in shares)	3,300	2,800
Number of shares available for issuance (in shares)			4,800		4,800
Stock-based compensation expense			$ 4,868	$ 9,212	$ 16,013	$ 30,509
Amount capitalized					$ 1,400
Stock option share exercised (in shares)					3
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option share exercised (in shares)					100
Proceeds from exercise of stock options and ESPP contributions					$ 100
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			1,758	2,886	5,192	11,829
Employee stock purchase plan and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 194	$ 184	$ 269	$ 653
Common shares reserved for future issuance (in shares)								200
Increase in shares authorized (in shares)							1,400
Employee stock purchase plan and other | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock issued under plan (in shares)					100	100