Condensed Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares			3 Months Ended		6 Months Ended
	May 24, 2019	May 08, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Common shares repurchased (in shares)						344,533
Repurchase of common shares, weighted average price (in dollars per share)						$ 59.20
Stock dividend percent				15.00%		15.00%
Dividend declared per common share (in dollars per share)	$ 0.31	$ 0.27	$ 0.31	$ 0.27	$ 0.62	$ 0.54