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FEDERAL INCOME TAXES Income and Provision for Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Tax Contingency [Line Items]                      
TRS income before income taxes                 $ 12,022 $ 50,225 $ 3,385
Provision for income taxes:                      
TRS net income before noncontrolling interests 3,789 3,843 4,245 8,185 6,589 4,592 12,250 4,829 20,062 28,260 26,574
Noncontrolling interests                 2,160 20,610 (18,427)
TRS net income                 53,715 50,667 12,706
TRS [Member]
                      
Income Tax Contingency [Line Items]                      
TRS income before income taxes                 376 5,716 2,671
Provision for income taxes:                      
Federal                 222 2,164 1,025
State and local                 59 543 292
TRS net income before noncontrolling interests                 95 3,009 1,354
Noncontrolling interests                 1,245 (545) 0
TRS net income                 $ 1,340 $ 2,464 $ 1,354