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Summary of Significant Accounting Policies Interest Costs Capitalized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest Cost [Abstract]
Capitalized interest	$ 4,067	$ 4,472	$ 2,354

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- Definition

Interest Cost [Abstract]

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No definition available.

+ Details

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- Definition

Amount of interest costs capitalized disclosed as an adjusting item to interest costs incurred.

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No definition available.

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