Interim Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Accounts Receivable, Allowance for Credit Loss, Current	$ 16,497	$ 17,009
Shareholders' equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	44,786,011	44,786,011
Common stock, shares outstanding	23,907,528	24,125,317
Treasury stock, shares	20,878,483	20,660,694