At-The Market Shelf Registration, Equity Offering Sales Agreement, Aggregate Sales Price

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Aggregate regular dividends declared during the period for each share of common stock outstanding.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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

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Per share or per unit amount of equity securities issued.

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Number of new stock issued during the period.

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Equity and Dividends (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Feb. 16, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common stock, shares authorized (in shares)		100,000,000	100,000,000
At-The Market Shelf Registration, Equity Offering Sales Agreement, Aggregate Sales Price		$ 500,000
Stock Issued During Period, Shares, New Issues		661,951	535,990
Shares Issued, Price Per Share		$ 73.62
Proceeds from equity offering, net		$ 47,904	$ 34,649	$ 95,774
Declared June 3, 2021
Common Stock, Dividends, Per Share, Declared, Regular		$ 0.90
Declared February 16, 2022 \| Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared, Regular	$ 0.90