Consolidated Statements of Income (Unaudited) (Parenthetical) (USD $) In Thousands | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |
| Expenses: | ||||
| Net (loss) income attributable to noncontrolling interest, tax | $ 0 | $ 613 | $ 0 | $ 1,591 |