CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 27,897,000	$ 24,813,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 54,837,000	$ 43,838,000
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)	48,132,223	47,061,826
Common Stock, shares outstanding (in shares)	48,132,223	47,061,826
Treasury Stock
Treasury stock, at cost	1,357,863	1,357,863
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