Fair Value Disclosures [Text Block] | (3) Fair Value Measurements A fair value hierarchy has been established that requires the Company to maximize the use of observable inputs, where available, and minimize the use of unobservable inputs when measuring fair value. The fair value hierarchy describes three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The following table sets forth the financial assets and liabilities that were measured at fair value on a recurring basis at March 31, 2016 and June 30, 2015, by level within the fair value hierarchy. The assets and liabilities measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s long-term investments have been classified as Level 2, which have been initially valued at the transaction price and subsequently revalued, at the end of each reporting period, utilizing a third party pricing service. The pricing service utilizes industry standard valuation models and observable market inputs to determine value that include surveying the bond dealer community, obtaining benchmark quotes, incorporating relevant trade data, and updating spreads daily. There have been no transfers of assets or liabilities between the fair value measurement classifications. Quoted Prices in Active Markets for Significant Other Significant (in millions) Identical Assets Observable Inputs Unobservable March 31 , 201 6 Total (Level 1) (Level 2) Inputs (Level 3) Cash equivalents $ 26.2 $ 25.5 $ 0.7 $ — Short-term investments available-for-sale 18.4 10.9 7.5 — Long-term investments available-for-sale 1.0 — 1.0 — Total $ 45.6 $ 36.4 $ 9.2 $ — Aviragen Therapeutics, Inc. Notes to the Condensed Consolidated Financial Statements (unaudited) (for the quarterly period ended March 31, 2016) Quoted Prices in Active Markets for Significant Other Significant (in millions) Identical Assets Observable Inputs Unobservable June 30, 2015 Total (Level 1) (Level 2) Inputs (Level 3) Cash equivalents $ 6.3 $ 6.3 $ — $ — Short-term investments available-for-sale 12.9 12.9 — — Long-term investments available-for-sale 7.9 — 7.9 — Total $ 27.1 $ 19.2 $ 7.9 $ — Cash equivalents consist primarily of money market funds. Short and long investments consist of U.S. agency securities, certificates of deposit, corporate securities and U.S. Treasury securities, classified as available-for-sale and have maturities greater than 365 days from the date of acquisition. The following table shows the unrealized gains and losses and fair values for those investments as of March 31, 2015 and June 30, 2015 aggregated by major security type: (in millions) Unrealized Unrealized March 31 , 201 6 At Cost Gains (Losses) At Fair Value Money market funds $ 25.5 $ — $ — $ 25.5 Debt securities of U.S. government agencies 2.0 — — 2.0 U.S. Treasury securities 7.0 — — 7.0 Corporate notes 3.9 — — 3.9 Certificates of deposit 7.2 — — 7.2 Total $ 45.6 $ — $ — $ 45.6 (in millions) Unrealized Unrealized June 30, 2015 At Cost Gains (Losses) At Fair Value Money market funds $ 6.3 $ — $ — $ 6.3 Debt securities of U.S. government agencies 6.5 — — 6.5 U.S. Treasury securities 9.6 — (0.1 ) 9.5 Corporate notes 2.9 — — 2.9 Certificates of deposit 1.9 — — 1.9 Total $ 27.2 $ — $ (0.1 ) $ 27.1 As of March 31, 2016 and June 30, 2015, the Company had investments in an unrealized loss position below material disclosure thresholds in the table above. The Company has determined that the unrealized losses on these investments are temporary in nature and expects the security to mature at its stated maturity principal. All available-for-sale securities held at March 31, 2016, will mature within a two year period. The fair value of cash, accounts receivable, accounts payable and accrued liabilities approximate their carrying value because of the short-term nature of these financial instruments respectively, at March 31, 2016 and June 30, 2015 . The fair value of the Company’s short and long term note payable, which is measured using Level 2 inputs, approximates book value, at March 31, 2016 and June 30, 2015. |