Restricted Stock, Common Stock And Common Stock Option Plans (Schedule Of Nonvested Restricted Common Shares) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted Stock, Common Stock And Common Stock Option Plans [Abstract]
Class A Non-vested Restricted Stock, Outstanding begining balance	1,310,302	1,195,406	211,900
Class A Non-vested Restricted Stock, Vested	(315,102)	(315,104)	(142,900)
Class A Non-vested Restricted Stock, Forfeited			(4,000)
Class A Non-vested Restricted Stock, Granted	396,082	430,000	1,130,406
Class A Non-vested Restricted Stock, Outstanding ending balance	1,391,282	1,310,302	1,195,406
Weighted Average Grant date Fair Value, Outstanding begining balance	$ 8.76	$ 6.53	$ 6.96
Weighted Average Grant date Fair Value, Vested	6.52	6.52	6.20
Weighted Average Grant date Fair Value, Forfeited			6.20
Weighted Average Grant date Fair Value, Granted	16.58	13.33	6.55
Weighted Average Grant date Fair Value, Outstanding ending balance	$ 11.50	$ 8.76	$ 6.53