Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	$ 4,499	$ 4,766
Allowance for Doubtful Other Receivables, Current	$ 517	$ 497
Common Stock, Shares Authorized	120,000,000	120,000,000
Common Stock, Shares, Issued	50,516,479	50,461,885	50,420,017	50,420,017