Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2011

Stockholders' Equity [Abstract]

Schedule Of Outstanding Preferred Stock

Series	Annual Dividend	Conversion Rate *	Recorded Amount	Liquidation Preference	Redemption Price
A	$1.60	1.6562	$13.98	$16.40	$16.40
B	1.26	0.6399	11.24	11.38	12.50

* Reflects the number of common shares to be received for each preferred share converted based on conversion rates in effect January 1, 2012 for the Series A shares and December 31, 2011 for the Series B shares. During 2011, 1,050 Series A shares were converted into 1,733 common shares.