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Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019
--- | --- | --- | ---
Allowances for Accounts Receivable (in dollars) | $ 10,214 | $ 11,066 | $ 12,706
Preferred stock-issued | 0 | 0 | 0
Common Stock, Par or Stated Value Per Share | $ 0.0001 | $ 0.0001 | $ 0.0001
Common stock, shares authorized | 245,000,000 | 245,000,000 | 245,000,000
Common stock, shares issued | 133,173,000 | 132,754,000 | 132,685,000
Common stock, shares outstanding | 83,030,000 | 83,520,000 | 84,040,000
Treasury stock-shares at cost | 50,143,000 | 49,234,000 | 48,645,000
Preferred Class A [Member] |  |  |
Preferred stock-par value | $ 0.0001 | $ 0.0001 | $ 0.0001
Preferred stock- shares authorized | 5,000,000 | 5,000,000 | 5,000,000
Preferred Class B [Member] |  |  |
Preferred stock-par value | $ 0.0001 | $ 0.0001 | $ 0.0001
Preferred stock- shares authorized | 60,000 | 60,000 | 60,000

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