Annual report pursuant to Section 13 and 15(d)

Related-Party Transactions - Additional Information (Detail)

v2.4.0.8
Related-Party Transactions - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Component
Dec. 31, 2011
Dec. 31, 2013
MMC [Member]
Dec. 31, 2012
MMC [Member]
Dec. 31, 2011
MMC [Member]
Dec. 31, 2013
Mr. Marcus [Member]
Dec. 31, 2013
Transition Services Agreement [Member]
MMC [Member]
Dec. 31, 2013
Transition Services Agreement [Member]
Health Insurance Premium [Member]
MMC [Member]
Jun. 30, 2013
Cash Operating Bank Account [Member]
Financial_Institution
Dec. 31, 2013
Cash and Cash Equivalents Bank Accounts [Member]
Financial_Institution
Dec. 31, 2012
Cash and Cash Equivalents Bank Accounts [Member]
Financial_Institution
Dec. 31, 2012
Line of credit [Member]
Payment guarantee [Member]
Dec. 31, 2012
Term loan [Member]
Payment guarantee [Member]
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