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Investment Income and Other
 3 Months Ended
Mar. 31, 2012
Nonoperating Income (Expense) [Abstract]  
Investment Income and Other
INVESTMENT INCOME AND OTHER

The following table summarizes our investment income and other: (in thousands):
 
Three Months Ended
 
March 31,
 
2012
 
2011
Dividend income
$
975

 
$
1,135

Realized gains on sale of marketable securities
—

 
154

Other revenue
85

 
123

 
$
1,060

 
$
1,412