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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Statement of Financial Position [Abstract] |  |
Receivables, reserve | $ 14 | $ 14
Intangible Assets, accumulated amortization | 14,672 | 12,856
Property and Equipment, accumulated depreciation | $ 97,424 | $ 94,766
Treasury stock, shares (in shares) | 8,439,747 | 8,375,077
Class A |  |
Common stock, no par value (usd per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 20,000 | 20,000
Common stock, shares issued (in shares) | 9,000 | 9,000
Common stock, shares outstanding (in shares) | 9,000 | 9,000
Class B |  |
Common stock, no par value (usd per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 900,000,000 | 900,000,000
Common stock, shares issued (in shares) | 109,505,456 | 109,505,456
Common stock, shares outstanding (in shares) | 101,065,709 | 101,130,379

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