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Note 6 - Accrued Expenses (Details) - Accrued Expenses (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Expenses [Abstract]
Payroll and employee-related costs	$ 641	$ 419
Contracted service costs	494us-gaap_OtherAccruedLiabilitiesCurrent	360us-gaap_OtherAccruedLiabilitiesCurrent
Professional fees and other	286us-gaap_AccruedProfessionalFeesCurrent	205us-gaap_AccruedProfessionalFeesCurrent
Total	$ 1,421us-gaap_AccruedLiabilitiesCurrent	$ 984us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

- Definition

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).

+ References+ Details