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Public Offering of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsidiary, Sale of Stock [Line Items]
Net proceeds from public offering		$ 0	$ 0	$ 100,870
Public Offering
Subsidiary, Sale of Stock [Line Items]
Public offering of common stock (in shares)	6,325,000
Public offering of common stock (in dollars per shares)	$ 17.00
Net proceeds from public offering	$ 100,900
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Public offering of common stock (in shares)	825,000

X

- Definition

The cash inflow from the additional capital contribution to the entity.

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