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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment $ 130,099 $ 117,118
Finite-Lived Intangible Assets, Accumulated Amortization 178,459 [1] 189,671
Other Finite-Lived Intangible Assets, Accumulated Amortization $ 9,696 $ 8,989
SHAREHOLDERS' EQUITY:    
Preferred Stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, shares authorized ( in shares) 5,000,000 5,000,000
Common Stock, par value (in dollars per share) $ 0.01 $ 0.01
Common Stock, shares authorized (in shares) 200,000,000 200,000,000
Common Stock, shares issued (in shares) 48,706,932 49,136,030
Common Stock, shares outstanding (in shares) 47,341,284 47,770,382
Treasury Stock    
Treasury stock, shares 1,365,648 1,365,648
Series A Nonconvertible Preferred Stock [Member]    
Shareholders' Equity A Nonconvertible Preferred Stock    
Preferred Stock, shares issued (in shares) 200,000 200,000
Preferred Stock, shares outstanding (in shares) 200,000 200,000
Preferred Stock, liquidation value per share (in dollars per share) $ 7.50 $ 7.50
Preferred Stock, liquidation value $ 1,500 $ 1,500
[1] During the six months ended June 30, 2023, the gross value and accumulated amortization associated with the PD-LD, Inc. and Motorola patent portfolios have been removed from the table as the underlying patents have reached the end of their useful lives.