Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net income attributable to shareholders	$ 19,412	$ 4,243	$ 1,326	$ 1,958	$ 23,655	$ 3,284
Denominator:
Basic weighted-average number of common shares (in shares)	38,665,765		37,686,763		38,348,310	38,165,274
Diluted weighted-average number of shares (in shares)	40,814,238		39,975,307		40,103,016	40,166,855
Basic earnings per share (in dollars per share)	$ 0.50		$ 0.04		$ 0.62	$ 0.09
Diluted earnings per share (in dollars per share)	$ 0.48		$ 0.03		$ 0.59	$ 0.08
Denominator calculation from basic to diluted:
Basic weighted-average number of common shares (in shares)	38,665,765		37,686,763		38,348,310	38,165,274
Stock options and other dilutive securities (in shares)	2,148,473		2,288,544		1,754,706	2,001,581
Diluted weighted-average number of shares (in shares)	40,814,238		39,975,307		40,103,016	40,166,855