Stockholders' Equity Note Disclosure [Text Block] | Note 8. Stockholders’ Equity As of June 30, 2015 and June 30, 2014, the total number of shares that the Company is authorized to issue is 130,000,000 shares, with 125,000,000 shares designated as common stock and 5,000,000 shares designated as preferred stock. Common Stock Holders of common stock are entitled to one vote per share on all matters to be voted upon by the stockholders of the Company. Subject to the preferences that may be applicable to any outstanding shares of preferred stock, the holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Board of Directors. No dividends have been declared to date. In April 2014, the Company sold 37,375,000 shares of its common stock at $0.85 per share, and 191,474 shares of Series A Convertible Preferred Stock at $85 per share. The Series A convertible preferred stock is non-voting and is convertible into shares of its common stock at a conversion rate of 100 shares of common stock for each share of Series A convertible preferred stock, provided that conversion will be prohibited if, as a result, the holder and their affiliates would own more than 9.98% of the total number of shares of the Company’s common stock then outstanding unless the holder gives the Company at least 61 days prior notice of an intent to convert into shares of common stock that would cause the holder to own more than 9.98% of the total number of shares of common stock then issued and outstanding. Net proceeds from the financing to the Company were approximately $44.6 million. For fiscal year ended June 30, 2014, the Company recorded a deemed dividend of $1.9 million related to beneficial conversion feature of series A convertible preferred stock. A one-time beneficial conversion charge was due to the difference between the common stock price and conversion price on the closing date of the Company’s public offering in April 2014 . On March 20, 2013, the Company completed the sale of 14,251,368 shares of its common stock at a price to the public of $1.05 per share. Net proceeds from the financing to the Company were $14.0 million. On August 3, 2011, the Company entered into the At The Market Issuance Sales Agreement (the “ATM Agreement”) with McNicoll, Lewis & Vlak LLC (“MLV”), which provided for the sale of the Company’s common stock through MLV as the Company’s sales agent. The ATM Agreement expired on August 2, 2014. During the fiscal years ended June 30, 2014 and 2013, the Company received net proceeds of $0.4 million and $0.7 million, respectively, from the sale of an aggregate of 439,163 and 414,099 shares of common stock through MLV, respectively. During the fiscal year ended June 30, 2015, the Company did not sell any shares of common stock through MLV. On December 14, 2010, the Company entered into a common stock purchase agreement (the “Purchase Agreement”) with Aspire Capital Fund, LLC, an Illinois limited liability company (“Aspire Capital”), which provided for the sale of the Company’s common stock through Aspire as the Company’s sales agent. In consideration for entering into the Purchase Agreement, concurrently with the execution of the Purchase Agreement, the Company issued to Aspire Capital 295,567 shares of the Company’s common stock as a commitment fee (the “Commitment Shares”). The value of the Commitment Shares of $966,000 and other costs related to entering into the Purchase Agreement of $134,000 represented financing costs that were recorded to additional paid-in capital upon capital being raised under the Purchase Agreement. The Purchase Agreement provided that the Company may not issue and sell more than 4,930,747 shares of the Company’s common stock, including the Commitment Shares. The Purchase Agreement terminated on February 10, 2013, and 166,759 shares of the Company’s common stock issued pursuant to the Purchase Agreement were returned to the Company as the maximum numbers of shares available under the Purchase Agreement were not sold to Aspire. Based on the quoted price, the shares were valued at $1.38 per share, or $230,000. The Company is no longer entitled to sell any further shares of its common stock to Aspire Capital under the Purchase Agreement. Preferred Stock The Company has 5,000,000 shares of authorized preferred stock issuable in one or more series. The Company can determine the number of shares constituting any series and the designation of such series and the rights, preferences, privileges and restrictions thereof. These rights, preferences and privileges could include dividend rights, conversion rights, voting rights, terms of redemption, liquidation preferences and sinking fund terms, any or all of which may be greater than the rights of common stock. The issuance of the preferred stock could adversely affect the voting power of holders of common stock and the likelihood that such holders will receive dividend payments and payments upon liquidation. In addition, the issuance of preferred stock could have the effect of delaying, deferring or preventing a change in control of the Company or other corporate action. As of June 30, 2015, the Company had designated 250,000 shares of preferred stock as series A convertible preferred stock, and there were 191,474 shares of series A convertible preferred stock issued and outstanding. For the fiscal year ended June 30, 2014, the Company recorded a deemed dividend of $1.9 million related to beneficial conversion feature of series A convertible preferred stock. A one-time beneficial conversion charge was due to the difference between the common stock price and conversion price on the closing date of the Company’s public offering in April 2014 . Each share of Series A preferred stock is convertible into 100 shares of the Company’s common stock at any time at the option of the holder, provided that the holder will be prohibited from converting Series A preferred stock into shares of the Company’s common stock if, as a result of such conversion, the holder, together with its affiliates, would own more than 9.98% of the total number of shares of the Company’s common stock then issued and outstanding, unless the holder gives us at least 61 days prior notice of an intent to convert into shares of common stock that would cause the holder to own more than 9.98% of the total number of shares of the Company’s common stock then issued and outstanding. In the event of the Company’s liquidation, dissolution, or winding up, holders of the Company’s Series A preferred stock will share ratably with the holders of the Company’s common stock on an as-if-converted basis. Shares of Series A preferred stock will generally have no voting rights, except as required by law and except that the consent of holders of a majority of the outstanding Series A Preferred Stock will be required to alter or change adversely the powers, preferences or rights given to the Series A preferred stock (an increase the number of authorized shares of Series A preferred stock shall not constitute an adverse change) or enter into any agreement to do so. Shares of Series A Preferred Stock will not be entitled to receive any dividends, unless a cash dividend is declared by the Company’s board of directors to be paid to the holders of common stock, in which case the holders of Series A Preferred Stock will be entitled to receive a cash dividend equal to the amount of dividends declared on the common stock on an as-if-converted basis. Shares Reserved Shares of common stock reserved for future issuance are as follows: June 30, 2015 Stock options and RSUs outstanding 4,745,728 Shares available for grant under stock option plan 6,472,692 Shares reserved for issuance upon conversion of Series A Preferred 19,147,400 Warrants for common stock — 30,365,820 Stock Options In 1997, the Company adopted the 1997 Equity Incentive Plan (the “1997 Plan”). The 1997 Plan provides for the granting of options to purchase common stock and the issuance of shares of common stock, subject to Company repurchase rights, to directors, employees and consultants. Certain options are immediately exercisable, at the discretion of the Board of Directors. Shares issued pursuant to the exercise of an unvested option are subject to the Company’s right of repurchase which lapses over periods specified by the board of directors, generally four years from the date of grant. In February 2006, the Company terminated all remaining unissued shares under the 1997 Plan. Although the 1997 Plan terminated, all outstanding options thereunder will continue to be governed by their existing terms. In October 2005, the Company’s Board of Directors adopted, and in December 2005 the stockholders approved, the 2005 Equity Incentive Plan, as amended (the “2005 Plan”). Pursuant to a series of amendments, a total of 11,400,000 shares of common stock have been reserved for issuance under the 2005 Plan as of June 30, 2015. Stock awards granted under the 2005 Plan may either be incentive stock options, nonstatutory stock options, stock bonuses or rights to acquire restricted stock. Incentive stock options may be granted to employees with exercise prices of no less than the fair value of the common stock on the date of grant, as determined by the Board of Directors, and nonstatutory options may be granted to employees, directors or consultants at exercise prices of no less than the fair value. If, at the time the Company grants an option, the awardee directly or by attribution owns stock possessing more than 10% of the total combined voting power of all classes of stock of the Company, the option price shall be at least 110% of the fair value and shall not be exercisable more than five years after the date of grant. Options may be granted with vesting terms as determined by the Board of Directors. Options expire no more than 10 years after the date of grant, or earlier if employment is terminated. Common stock options may include a provision whereby the holder, while an employee, director or consultant, may elect at any time to exercise the option as to any part or all of the shares subject to the option prior to the full vesting of the option. Any unvested shares so purchased are subject to repurchase by the Company at its option and at a price equal to the original purchase price of the stock. The Company does not consider the stock issued upon exercise of an unvested stock option substantively exercised, and the cash paid for the exercise price is considered a deposit or a prepayment of the exercise price that is recognized by the Company as a liability. As the underlying shares vest, the deposit liability is reclassified as equity. As of June 30, 2015 and 2014, no such shares are subject to the Company’s right of repurchase and excluded from stockholders’ equity. On May 20, 2015, the Board of Directors of the Company adopted the Cardica, Inc. Inducement Plan pursuant to which the Company reserved 400,000 shares for issuance under the Inducement Plan. The only persons eligible to receive grants of Stock Awards under Inducement Plan are individuals who satisfy the standards for inducement grants under Nasdaq Marketplace Rule 5635(c)(4) and the related guidance under Nasdaq IM 5635-1 – that is, generally, a person not previously an employee or director of the Company, or following a bona fide period of non-employment, as an inducement material to the individual's entering into employment with the Company. A “ Stock Award On May 20, 2015, the Company’s new vice president of operations, was granted a stock option to purchase 400,000 shares of the Company common stock pursuant to the Inducement Plan. Award activity under all Plans is as follows: Outstanding Options Shares Available for Grant Number of Shares Weighted- Average Exercise Price Per Share Balance at June 30, 2012 865,433 3,854,171 $ 2.53 Shares reserved 750,000 — — Restricted stock awards granted (48,000 ) — — Options granted (671,150 ) 671,150 1.53 Options exercised — (10,518 ) 1.31 Options forfeited 578,908 (578,908 ) 2.22 Balance at June 30, 2013 1,475,191 3,935,895 $ 2.43 Shares reserved 1,000,000 — — Restricted stock awards granted (92,666 ) — — Options granted (1,944,500 ) 1,944,500 1.24 Options forfeited 278,916 (278,916 ) 3.94 Balance at June 30, 2014 716,941 5,601,479 $ 1.95 Shares reserved 5,000,000 — — Restricted stock awards granted (290,000 ) — — Options granted (2,509,615 ) 2,509,615 0.69 Options forfeited 3,555,366 (3,555,366 ) 1.45 Balance at June 30, 2015 6,472,692 4,555,728 $ 1.65 The following table summarizes information about options outstanding, vested and exercisable at June 30, 2015: Options Outstanding Options exercisable Exercise Prices Number of Shares Weighted- Average Remaining Contractual Life (years) Weighted Average Exercise Price per Share Number of Shares Weighted Average Exercise Price per Share $0.41 – $1.00 1,551,833 6.77 0.59 368,358 0.81 $1.12 – $1.43 1,526,400 3.54 1.27 1,069,368 1.27 $1.55 – $9.75 1,477,495 1.64 3.16 1,407,692 3.22 Total outstanding 4,555,728 4.03 $ 1.65 2,845,418 $ 2.17 Options vested and expected to vest 4,295,133 3.87 $ 1.71 The weighted average remaining contractual life for all currently exercisable options as of June 30, 2015, was 2.5 years. The aggregate intrinsic value as of June 30, 2015, of all outstanding options was $53,000, options vested and expected to vest was $43,000 and options exercisable was $0. The aggregate intrinsic value as of June 30, 2014, of all outstanding options was $105,000, options vested and expected to vest was $93,000 and options exercisable was $22,000. The weighted-average estimated grant date fair value of options granted to employees and directors during fiscal years 2015, 2014 and 2013 was $0.37, $0.80 and $1.03 per share, respectively. The intrinsic value of all options exercised during fiscal years 2015, 2014 and 2013 was $0, $0 and $4,000, respectively. The fair value of all stock options actually vesting in fiscal years 2015, 2014 and 2013 was $568,000, $528,000 and $746,000, respectively. Restricted Stock Units and Awards The following table summarizes information about restricted stock activity. Shares Non-vested restricted stock at June 30, 2012 46,000 Awarded 48,000 Vested (48,000 ) Forfeited — Non-vested restricted stock at June 30, 2013 46,000 Awarded 92,666 Vested (122,666 ) Forfeited — Non-vested restricted stock at June 30, 2014 16,000 Awarded 290,000 Vested (16,000 ) Forfeited (100,000 ) Non-vested restricted stock at June 30, 2015 190,000 The aggregate intrinsic value as of June 30, 2015, of all non-vested restricted stock awards was $95,000, and awards expected to vest was $82,000. The estimated grant date fair value of awards granted during fiscal years 2015, 2014 and 2013, was $1.14, $1.15 and $1.43 per share, respectively. The intrinsic value of all awards granted during fiscal years 2015, 2014 and 2013 was $330,000, $106,000 and $66,000, respectively. The fair value of all stock awards actually vesting in fiscal years 2015, 2014 and 2013 was $19,000, $165,000 and $75,000, respectively. The fair value of each restricted stock award is estimated based upon the closing price of the Company’s common stock on the grant date. Share-based compensation expense related to restricted stock units and awards is recognized over the requisite service period as adjusted for estimated forfeitures. Warrants The Company’s warrants to purchase 3,991,205 shares of common stock at $1.45 per share related to the 2009 Private Placement expired in September 2014. |