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
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Legal $ 1,497 $ 1,625  
Other 646 1,030  
Total $ 44,725 36,127  
National Holdings Corporation [Member]      
Legal   653 $ 877
Audit   171 176
Telecommunications   208 205
Data Services   454 464
Regulatory   663 540
Settlements   1,789 2,403
Deferred rent   684 497
Other   3,437 3,242
Total   $ 8,059 $ 8,404