CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 23,251,000	$ 22,756,000
Finite-Lived Intangible Assets, Accumulated Amortization	35,591,000	32,841,000
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)	100,000,000	100,000,000
Common Stock, shares issued (in shares)	46,889,496	46,825,168
Common Stock, shares outstanding (in shares)	46,889,496	46,825,168
Treasury Stock
Treasury stock, at cost (205,902 shares at December 31, 2012)	401,501	401,501
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	$ 1,500,000	$ 1,500,000