Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Numerator (both basic and diluted):
Net income (loss)	$ 2,444	$ (12,797)	$ 536	$ (21,574)
Denominator:
Denominator for basic earnings per share	41,341,888	40,336,229	40,850,970	40,411,887
Stock options	101,446		146,354
Unvested restricted stock	600,113		351,395
Denominator for diluted earnings per share	42,043,447	40,336,229	41,348,719	40,411,887
Basic earnings per common share:	$ 0.06	$ (0.32)	$ 0.01	$ (0.53)
Diluted earnings per common share:	$ 0.06	$ (0.32)	$ 0.01	$ (0.53)