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Capital Lease Obligations (Details) (USD $)	3 Months Ended
Capital Lease Obligations (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Leases [Abstract]
Depreciation expense on the equipment under the capital leases	$ 13,000	$ 40,000
Current portion of capital lease obligations	25,000us-gaap_CapitalLeaseObligationsCurrent		41,000us-gaap_CapitalLeaseObligationsCurrent
Long-term portion of capital lease obligations	$ 0		$ 1,000

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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