Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and Other Long-Term Liabilities- Accounts Payable and Other Accrued Expenses (Detail)

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Accrued Expenses and Other Long-Term Liabilities- Accounts Payable and Other Accrued Expenses (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Dec. 31, 2016
Legal $ 1,297   $ 1,253
Other 2,703   2,002
Total $ 31,978   $ 23,871
National Holdings Corporation [Member]      
Legal   $ 836  
Audit   148  
Telecommunications   196  
Data Services   450  
Regulatory   661  
Settlements   2,633  
Deferred rent   177  
Contingent consideration payable   636  
Income taxes payable   927  
Other   1,844  
Total   $ 8,508