Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended	12 Months Ended
	May 15, 2020	Jun. 12, 2019	Jun. 12, 2019	Jun. 10, 2019	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of common stock, net of issuance costs	$ 311,300					$ 0	$ 311,321	$ 195,289
Underwriting discounts, commissions and offering costs	$ 12,700				$ 8,200
Public Stock Offering
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock from registered public offering (in shares)	4,735,294	395,698		2,637,986
Issuance of common stock from registered public offering (in usd per share)	$ 76.50			$ 69.50
Public Stock Offering - Shares From Parent
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock from registered public offering (in shares)	4,235,294		2,913,684
Issuance of common stock from registered public offering (in usd per share)		$ 69.50	$ 69.50
Public Stock Offering - Shares From Existing Shareholders
Subsidiary, Sale of Stock [Line Items]
Issuance of common stock from registered public offering (in shares)	500,000	120,000
Proceeds from issuance of common stock, net of issuance costs					$ 195,300