CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023		Dec. 31, 2022
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 137,020		$ 117,118
Finite-Lived Intangible Assets, Accumulated Amortization	182,657	[1]	189,671
Other Finite-Lived Intangible Assets, Accumulated Amortization	$ 10,055		$ 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)	48,720,530		49,136,030
Common Stock, shares outstanding (in shares)	47,354,882		47,770,382
Stockholders' Equity, Number of Shares, Par Value and Other Disclosure [Abstract]
Treasury Stock, Common, Shares	1,365,648		1,365,648
Treasury Stock, Preferred, 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)	$ 7.5		$ 7.5
Preferred Stock, liquidation value	$ 1,500		$ 1,500

[1] During the nine months ended September 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.