Earnings per Share - Repurchase Program (Details) - Repurchase Program - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Sep. 18, 2019
Earnings Per Share
Value of shares authorized for repurchase		$ 5.0
Total number of common stock repurchased	0

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

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration