Segment Information - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2013
|
Sep. 30, 2013
|
Jun. 30, 2013
|
Mar. 31, 2013
|
Dec. 31, 2012
|
Sep. 30, 2012
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Dec. 31, 2013
Segment
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Segment Reporting Information [Line Items] | |||||||||||
Number of reportable segments | 4 | ||||||||||
Total revenues | $ 343,165 | $ 359,310 | $ 325,792 | $ 335,012 | $ 302,830 | $ 303,800 | $ 290,916 | $ 302,486 | $ 1,363,279 | $ 1,200,032 | $ 1,013,542 |
London Operation [Member]
|
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Segment Reporting Information [Line Items] | |||||||||||
Total revenues | $ 12,200 | $ 9,700 | $ 9,100 |