Accrued Expenses and Other Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Other Liabilities Disclosure [Abstract]
Accrued bonuses	$ 70,272,000	$ 12,668,000
Accrued compensation and benefits	35,145,000	19,943,000
Accrued rent and vendor expenses	19,235,000	16,972,000
Reserve for policy cancellations	8,010,000	7,174,000
Accrued interest	3,324,000	3,295,000
Other	21,414,000	19,541,000
Total	$ 157,400,000	$ 79,593,000

Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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