CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Allowance for doubtful accounts	$ 3,705	$ 4,394
Shareholders’ equity:
Common Stock, Shares Authorized	65,000,000	65,000,000
Common shares, par value (in dollars per share)	$ 0.10	$ 0.10
Common shares, outstanding	46,391,000	46,326,000