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Operating Segment Information (Detail) - (Table 2) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Domestic $ 1,399,551,000 $ 1,405,239,000 $ 1,334,951,000
International 1,399,551,000 1,405,239,000 1,334,951,000
Revenues 1,399,551,000 1,405,239,000 1,334,951,000
Domestic (Non-US Title) [Member]      
Segment Reporting Information [Line Items]      
Domestic 315,566,000 329,089,000 323,342,000
International 315,566,000 329,089,000 323,342,000
Revenues 315,566,000 329,089,000 323,342,000
Domestic [Member]      
Segment Reporting Information [Line Items]      
Domestic 1,258,983,000 1,255,668,000 1,221,771,000
International 1,258,983,000 1,255,668,000 1,221,771,000
Revenues 1,258,983,000 1,255,668,000 1,221,771,000
International [Member]      
Segment Reporting Information [Line Items]      
Domestic 140,568,000 149,571,000 113,180,000
International 140,568,000 149,571,000 113,180,000
Revenues $ 140,568,000 $ 149,571,000 $ 113,180,000