Accrued expenses are summarized as follows (in thousands): | | | December 31, | | | | | 2017 | | 2016 | | | Cost sharing expenses under license agreements | | $ | 328 | | $ | 150 | | | Other fees and services | | | 36 | | | 47 | | | Payroll, payroll taxes and benefits | | | 70 | | | 116 | | | Professional services | | | 149 | | | 232 | | | Clinical, non-clinical and regulatory services | | | 326 | | | 131 | | | Marketing, advertising, and promotion | | | - | | | 10 | | | Property taxes | | | 16 | | | 16 | | | Franchise taxes | | | 14 | | | 1 | | | Total | | $ | 939 | | $ | 703 | |
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