Earnings Per Share Securities Excluded Due to Exercise Price Exceeding Average Price During Period (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items]
Total shares excluded due to exercise price exceeding the average market price of common shares during the period (in shares)	1,254,000	796,000
Options, restricted stock, or other dilutive securities
Shares Excluded Due to Exercise Price Exceeding Average Price During Period [Line Items]
Total shares excluded due to exercise price exceeding the average market price of common shares during the period (in shares)	1,254,000	796,000