Shareholders' Equity and Earnings Per Common Share Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	9 Months Ended
	Apr. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Apr. 15, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Common Stock, Shares, Issued		134,127		11,500	120,937
Excess Stock, Shares Issued				1,500
Shares Issued, Price Per Share				$ 42.00
Proceeds from the issuance of common stock, net of issuance costs	$ 472,800	$ 473,527	$ 0