Stockholders' Equity - Equity Offering ProgramsEarnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Class of Stock [Line Items]
Net proceeds from issuance of common stock				$ 179,381	$ 40,169
At the market equity offering program
Class of Stock [Line Items]
Shares issued during period, price per share (in dollars per share)		$ 30.99	$ 30.09			$ 0
Priced shares sold on a forward basis (in shares)		5,835,400	215,532			0
Settlement of shares sold on a forward basis (in shares)		3,827,971	2,038,791			0
Shares sold on a forward basis remaining to be settled (in shares)		2,007,429	0	2,007,429		1,823,259
Net proceeds from issuance of common stock		$ 116,100	$ 62,700			$ 0
At the market equity offering program | Subsequent event
Class of Stock [Line Items]
Shares issued during period, price per share (in dollars per share)	$ 31.06
Priced shares sold on a forward basis (in shares)	1,670,186
Settlement of shares sold on a forward basis (in shares)	0
Shares sold on a forward basis remaining to be settled (in shares)	3,677,615
Net proceeds from issuance of common stock	$ 0