Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Summary Of Significant Accounting Policies [Abstract]
Depreciation expense	$ 184,000	$ 86,000	$ 367,000	$ 173,000
Stock option awards granted			354,000
Expected life			4 years
Expected volatility			73.00%
Dividend yield			0.00%
Risk-free interest rate			0.59%
Stock-based compensation expense	65,000	227,000	250,000	372,000
Stock options exercised		8,000		1,617,000
Proceeds received from options exercised		21,000		2,936,000
Special dividend paid, per common share				$ 2.00
Total amount of dividend paid				$ 31,335,000
Options not included in computation because they were anti-dilutive				512,000
Weighted average exercise of price of options outstanding that were anti-dilutive				$ 7.25