Prepaid Expenses and Other Current Assets (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Prepaid expenses	$ 970,000	$ 359,000
Contract receivable	496,000	486,000
Certificates of deposit	77,000	201,000
Refundable tax credits	42,000	151,000
Prepaid expenses and other current assets	$ 1,584,308	$ 1,196,618

The total of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer, and the aggregate carrying amount of current assets, as of the balance sheet date, not separately presented elsewhere in the balance sheet. Current assets are expected to be realized or consumed within one year (or the normal operating cycle, if longer).

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Sum of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer.

+ References+ Details