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Note 1 - Business	6 Months Ended
	Jun. 30, 2016
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	1.     Business Overview Heron Therapeutics, Inc. is a biotechnology company focused on improving the lives of patients by developing best-in-class medicines that address major unmet medical needs. We are developing novel, patient-focused solutions that apply our innovative science and technologies to already-approved pharmacological agents.  We are developing three pharmaceutical products for patients suffering from cancer or pain. SUSTOL® (granisetron) Injection, extended release (“SUSTOL”) is being developed for the prevention of both acute and delayed chemotherapy-induced nausea and vomiting (“CINV ”). HTX-019, an intravenous formulation of the neurokinin-1 (“NK1”) receptor antagonist aprepitant, is being developed for the prevention of CINV as an adjunct to other antiemetic agents. HTX-011, a long-acting formulation of the local anesthetic bupivacaine in a fixed-dose combination with the anti-inflammatory meloxicam, is being developed for the prevention of post-operative pain. Liquidity As of June 30, 2016, we had approximately $74,643,000 in cash, cash equivalents and short-term investments, or $124.6 million in pro-forma cash, cash equivalents and short-term investments adjusting for the first close of our loan agreement announced on August 2, 2016 for up to $100 million. We have incurred significant operating losses and negative cash flows from operations; our accumulated deficit is $489,499,000.

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The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

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