Condensed Consolidated Statements of Financial Position (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current Assets
Allowance for Doubtful Accounts Receivable, Current	$ 2,070	$ 1,945
Shareholders’ Equity
Preferred Shares, shares authorized (in shares)	1,000,000	1,000,000
Preferred Shares, shares issued (in shares)	0	0
Preferred Shares, shares outstanding (in shares)	0	0
Common Shares, shares authorized (in shares)	60,000,000	60,000,000
Common Shares, shares outstanding (in shares)	35,755,972	35,710,934
Common shares, treasury (in shares)	6,796,485	6,841,523