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Share Repurchase Program (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 01, 2016
Equity, Class of Treasury Stock [Line Items]
Purchase of treasury stock (in shares)	3,063,000	3,005,000	1,281,000
Treasury stock repurchased (in dollars per share)	$ 5.92	$ 6.56	$ 6.64
Purchase of treasury stock	$ 18,123,000	$ 19,710,000	$ 8,500,000
Amount available under the share repurchase program	$ 44,000,000.0
2016 Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized share repurchased program amount				$ 100,000,000.0

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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