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Significant Components of Other Current Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Other Liabilities [Line Items]    
Accrued expenses $ 26,809 $ 30,963
Deferred revenues 31,697 29,101
Dividends payable 19,160 729
Accrued income taxes   10,936
Other 40,295 28,553
Total $ 117,961 $ 100,282