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Transactions with Related Persons (Details) - $ / shares		12 Months Ended
	Jul. 13, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Value of each common share repurchased and retired during the period (in dollars per share)		$ 858	$ 877	$ 869
Franklin Mutual Advisers
Related Party Transaction [Line Items]
Value of each common share repurchased and retired during the period (in dollars per share)	$ 850.00
Common Stock
Related Party Transaction [Line Items]
Common shares repurchased and retired during the period		5,679	592,458	832,725
Common Stock | Franklin Mutual Advisers
Related Party Transaction [Line Items]
Common shares repurchased and retired during the period	235,000

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Number of shares that have been repurchased and retired during the period.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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