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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Short term investments, available-for-sale securities at fair value $ 340 $ 350
Accounts receivable, allowance for credit losses 49 0
Long-term investments, available-for-sale securities fair value $ 8,913 $ 29,717
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 78,088,000 79,652,000
Common stock, shares outstanding 77,889,000 49,063,000
Treasury stock, shares 198,000 30,590,000