Shareholders' Equity - Summary of Common Shares Outstanding (Details) - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Roll forward of common shares outstanding
Balance at the beginning of the year	32,750,727	32,938,466
Restricted share issuances	137,888	148,815
Balance at the end of the period	32,601,889	33,087,281