Accounts Payable and Accrued Expenses (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Trade payables	$ 12,178,000	$ 12,031,000
Sales commissions payable	3,890,000us-gaap_AccruedSalesCommissionCurrent	5,403,000us-gaap_AccruedSalesCommissionCurrent
Sales tax payable	806,000	1,335,000
Accrued loan guarantee	1,980,000us-gaap_OtherAccruedLiabilitiesCurrent	0us-gaap_OtherAccruedLiabilitiesCurrent
Accrued payroll and related taxes	3,000,000us-gaap_AccountsPayableOtherCurrent	3,461,000us-gaap_AccountsPayableOtherCurrent
Total	$ 21,854,000	$ 22,230,000

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax.

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