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Related-Party Transactions - Additional Information (Detail) (USD $)
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12 Months Ended | |||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
Component
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Dec. 31, 2011
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Dec. 31, 2013
MMC [Member]
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Dec. 31, 2012
MMC [Member]
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Dec. 31, 2011
MMC [Member]
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Dec. 31, 2013
Mr. Marcus [Member]
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Dec. 31, 2013
Transition Services Agreement [Member]
MMC [Member]
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Dec. 31, 2013
Transition Services Agreement [Member]
Health Insurance Premium [Member]
MMC [Member]
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Jun. 30, 2013
Cash Operating Bank Account [Member]
Financial_Institution
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Dec. 31, 2013
Cash and Cash Equivalents Bank Accounts [Member]
Financial_Institution
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Dec. 31, 2012
Cash and Cash Equivalents Bank Accounts [Member]
Financial_Institution
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Dec. 31, 2012
Line of credit [Member]
Payment guarantee [Member]
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Dec. 31, 2012
Term loan [Member]
Payment guarantee [Member]
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| Related Party Transaction [Line Items] | ||||||||||||||
| Number of financial institutions | 1 | 3 | 3 | |||||||||||
| Description of cash sweep arrangement | Historically, other than for a 2-week period around MMC's March 31 fiscal year end, the Company had a receivable from MMC for the cash that was swept. When the sweep arrangement was not in effect, during the week before and the week after March 31, the Company's cash balances remained in the Company's bank accounts. | |||||||||||||
| Sweep agreement termination date | Jun. 30, 2013 | |||||||||||||
| Interest income earned from MMC | $ 100,000 | $ 200,000 | $ 100,000 | |||||||||||
| Line of credit maturity date | Dec. 26, 2015 | |||||||||||||
| Term loan maturity date | Jun. 01, 2019 | |||||||||||||
| Number of components | 2 | |||||||||||||
| Guarantee obligation, maximum amount of future payments | 49,700,000 | 30,700,000 | 19,000,000 | |||||||||||
| IPO completion date | Nov. 05, 2013 | |||||||||||||
| Payment under share service agreement | 600,000 | 800,000 | 900,000 | |||||||||||
| Health insurance premium expense | 3,200,000 | 3,500,000 | 2,800,000 | |||||||||||
| General and administrative expenses (pursuant to Transition Services Agreement) | 500,000 | 500,000 | 800,000 | 800,000 | 700,000 | |||||||||
| Transition services agreement effective date | Oct. 31, 2013 | |||||||||||||
| Accounts payable and other accrued expenses - related party | 506,000 | 500,000 | ||||||||||||
| Percentage of ownership in diluted shares | 67.00% | |||||||||||||
| Finance and brokerage services from transactions with MMC | 700,000 | 1,100,000 | 800,000 | |||||||||||
| Commission expenses for transactions with MMC | 400,000 | 700,000 | 500,000 | |||||||||||
| Rent expenses | 15,700,000 | 14,500,000 | 15,100,000 | 400,000 | 300,000 | 300,000 | ||||||||
| Lease expires date | Apr. 30, 2015 | |||||||||||||
| Aggregate employee notes receivable | $ 400,000 | $ 1,200,000 | ||||||||||||