Consolidation	9 Months Ended
	Sep. 30, 2011
Consolidation [Abstract]
Consolidation	In the opinion of our management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, which include only normal recurring adjustments, necessary for a fair statement of our consolidated financial position as of September 30, 2011, our consolidated results of operations for the three and nine months ended September 30, 2011 and 2010, and cash flows for the nine months ended September 30, 2011 and 2010.  The consolidated results of operations for the three and nine months ended September 30, 2011, are not necessarily indicative of the results to be expected for the entire year.  These financial statements should be read in conjunction with the financial statements and notes thereto included in our 2010 Annual Report on Form 10-K filed with the Securities and Exchange Commission.