9. OTHER ACCRUED EXPENSES (Detail) - Schedule of accrued liabilities (USD $)	Dec. 31, 2012	Dec. 31, 2011
Accrued vacation pay	$ 480,307	$ 264,260
Accrued warranty costs	299,000	270,000
Customer advance payments	214,921	781,896
Other accruals	140,051	108,458
Totals	$ 1,134,279	$ 1,424,614

Carrying value as of the balance sheet date of obligations incurred and payable for unused vacation time owed to employees based on the entity's vacation benefit given to its employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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