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Shares (Tables)

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Schedule of common shares


						Common shares						Treasury shares						Common shares, net of treasury shares
Issued and outstanding at December 31, 2020						31,011,831						(1,845,201)						29,166,630
Issued upon exercise of stock options						125,000						—						125,000
Retired through share purchase program						(1,113,903)						—						(1,113,903)
Purchase of treasury shares						—						(21,503)						(21,503)
Settlement of certain equity classified stock-based compensation						—						301,891						301,891
Issued and outstanding at December 31, 2021						30,022,928						(1,564,813)						28,458,115
Retired through share purchase program						(2,195,646)						—						(2,195,646)
Purchase of treasury shares						—						(26,012)						(26,012)
Settlement of certain equity classified stock-based compensation						—						184,364						184,364
Issued and outstanding at December 31, 2022						27,827,282						(1,406,461)						26,420,821

Schedule of net income per share


Year ended December 31,						2022						2021
Net income						$	67,372					$	51,408
Interest from convertible debentures (after tax)						5,893						4,410
Diluted net income available to common shareholders						$	73,265					$	55,818

Weighted-average number of common shares						27,406,140						28,325,489
Weighted-average effect of dilutive securities
Dilutive effect of treasury shares						1,485,275						1,707,718
Dilutive effect of stock options						—						47,767
Dilutive effect of 5.00% convertible debentures						2,095,236						2,095,236
Dilutive effect of 5.50% convertible debentures						3,020,199						1,770,747
Weighted-average number of diluted common shares						34,006,850						33,946,957

Basic net income per share						$	2.46					$	1.81
Diluted net income per share						$	2.15					$	1.64

Schedule of dividends


						Date declared						Per share						Shareholders on record as of						Paid or payable to shareholders						Total paid or payable
Q1 2021						February 16, 2021						$	0.04					March 4, 2021						April 9, 2021						$	1,123
Q2 2021						April 27, 2021						$	0.04					May 28, 2021						July 9, 2021						$	1,123
Q3 2021						July 27, 2021						$	0.04					August 31, 2021						October 8, 2021						$	1,137
Q4 2021						October 26, 2021						$	0.04					November 30, 2021						January 7, 2022						$	1,137
Q1 2022						February 15, 2022						$	0.08					March 4, 2022						April 8, 2022						$	2,277
Q2 2022						April 26, 2022						$	0.08					May 27, 2022						July 8, 2022						$	2,232
Q3 2022						July 26, 2022						$	0.08					August 31, 2022						October 7, 2022						$	2,127
Q4 2022						October 25, 2022						$	0.08					November 30, 2022						January 6, 2023						$	2,098