Subsequent Events - Additional Information (Detail) | Oct. 27, 2016USD ($)$ / sharesshares | Sep. 28, 2016USD ($) | Sep. 23, 2016$ / sharesshares | Jul. 05, 2016USD ($)shares | Jun. 23, 2016USD ($) | Jun. 07, 2016USD ($)EmployeeTrancheshares | Jun. 06, 2016USD ($) | May 04, 2016USD ($) | Jul. 22, 2015$ / sharesshares | Apr. 04, 2015USD ($) | Apr. 04, 2013USD ($)$ / sharesshares | Sep. 30, 2015USD ($)shares | Sep. 30, 2016USD ($) | Dec. 31, 2014shares | Sep. 30, 2014shares |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock converted into common stock | | | | | | | | | | | | 3,718,804 | | | 1,826,380 |
Common stock, shares outstanding | | | | | | | | | | | | 12,975,044 | | 12,775,044 | |
Common stock shares sold | | | | | | | | | | | | 12,975,044 | | 12,775,044 | |
2005 Equity Incentive Plan [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
2005 Equity Incentive Plan, Shares Available for Issuance | | | | | | | | | | | | 204,808 | | | |
Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Common stock, shares outstanding | | | | | | | | | 16,693,711 | | | 12,975,044 | | | |
Increase in common stock outstanding, percentage | | | | | | | | | 29.00% | | | | | | |
Granted common stock purchase warrants | | | | | | | | | 3,485,908 | | | | | | |
Additional warrant shares to be granted | | | | | | | | | 3,749,692 | | | | | | |
Common stock purchase warrants outstanding with anti-dilutive provisions | | | | | | | | | 7,235,600 | | | | | | |
Weighted average price of warrant | $ / shares | | | | | | | | | $ 0.71 | | | | | | |
Shenzhen Qianhai Taxus [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Business acquisition, purchase price | $ | | | | | | | | | | $ 3,000,000 | | | | | |
Payment for business acquisition | $ | | | | | | | | | | $ 600,000 | | | | | |
Series A Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock, shares authorized | | | | | | | | | | | | 40,000,000 | | 40,000,000 | |
Series A Convertible Preferred stock, shares outstanding | | | | | | | | | | | | 1,116 | | 1,176 | |
Series A Convertible Preferred stock, shares issued | | | | | | | | | | | | 1,116 | | 1,176 | |
Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Series A Convertible Preferred stock, shares outstanding | | | | | | | | | 1,176 | | | | | | |
Effective conversion price per share | $ / shares | | | | | | | | | $ 0.30 | | | | | | |
Stated value per share for redemption | $ / shares | | | | | | | | | $ 1,000 | | | | | | |
Preferred stock converted into common stock | | | | | | | | | 3,918,667 | | | | | | |
Additional preferred stock converted into common stock | | | | | | | | | 2,092,350 | | | | | | |
Pineworld Capital Limited [Member] | Huapont Life Sciences [Member] | Mainland China [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty payment period | | | | | | | | | | | | quarterly | | | |
Royalty description | | | | | | | | | | | | The royalty payments commence on the first commercial sale and expire on the earlier of the termination of any patent or regulatory exclusivity in China or fifteen years after the first commercial sale. The term of the agreement continues (unless terminated for breach) until Huapont’s affiliate has no remaining payment obligations to Angionetics. | | | |
Minimum [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Effective conversion price per share | $ / shares | | | | | | | | | $ 0.30 | | | | | | |
Maximum [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Effective conversion price per share | $ / shares | | | | | | | | | $ 0.64 | | | | | | |
Schering AG Technology Transfer Agreement [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Technology transaction fees | $ | | | | | | | | | | | | $ 4,000,000 | | | |
Milestone payment obligated as sale of product | $ | | | | | | | | | | | | $ 10,000,000 | | | |
Share Purchase Agreement [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock, shares authorized | | | | | | | | | | | 4,012 | | | | |
Effective conversion price per share | $ / shares | | | | | | | | | | | $ 0.6437 | | | | |
Share Purchase Agreement [Member] | Maximum [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Proceeds from issuance of preferred stock | $ | | | | | | | | | | | $ 4,000,000 | | | | |
Subsequent Event [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Common stock, shares outstanding | 13,623,544 | | | | | | | | | | | | | | |
Common stock shares sold | 13,623,544 | | | | | | | | | | | | | | |
Common stock issuable upon the exercise of outstanding warrants | 12,099,333 | | | | | | | | | | | | | | |
Average exercise price per share | $ / shares | $ 0.71 | | | | | | | | | | | | | | |
Conversion price of warrants, amount | $ | $ 8,554,800 | | | | | | | | | | | | | | |
Subsequent Event [Member] | Office Lease [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Lease agreement term | | | | | 38 months | | | | | | | | | | |
Monthly base rent in year one | $ | | | | | $ 3,500 | | | | | | | | | | |
Monthly base rent in year two | $ | | | | | 3,700 | | | | | | | | | | |
Monthly base rent in year three | $ | | | | | 3,800 | | | | | | | | | | |
Monthly base rent in the final two months of the agreement | $ | | | | | 3,900 | | | | | | | | | | |
Total base rent over the lease term | $ | | | | | $ 139,800 | | | | | | | | | | |
Subsequent Event [Member] | 2005 Equity Incentive Plan [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
2005 Equity Incentive Plan, Shares Available for Issuance | 78,250 | | | | | | | | | | | | | | |
Weighted Average Exercise Price, Exercised | $ / shares | $ 30.25 | | | | | | | | | | | | | | |
Subsequent Event [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Common stock, shares outstanding | 18,877,988 | | 13,623,544 | | | | | | | | | | | | |
Increase in common stock outstanding, percentage | 39.00% | | | | | | | | | | | | | | |
Granted common stock purchase warrants | | | 7,235,600 | | | | | | | | | | | | |
Additional warrant shares to be granted | | | 4,823,733 | | | | | | | | | | | | |
Common stock purchase warrants outstanding with anti-dilutive provisions | | | 12,059,333 | | | | | | | | | | | | |
Weighted average price of warrant | $ / shares | | | $ 0.71 | | | | | | | | | | | | |
Subsequent Event [Member] | Shenzhen Qianhai Taxus [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Business acquisition, purchase of number of shares | | | | | | 600,000 | | | | | | | | | |
Business acquisition, purchase price | $ | | | | | | $ 3,000,000 | | | | | | | | | |
Payment for business acquisition | $ | | | | | | 600,000 | | | | | | | | | |
Subsequent Event [Member] | Series A Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Series A Convertible Preferred stock, shares outstanding | 945.80 | | | | | | | | | | | | | | |
Series A Convertible Preferred stock, shares issued | 945.80 | | | | | | | | | | | | | | |
Subsequent Event [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Series A Convertible Preferred stock, shares outstanding | 946 | | 1,000 | | | | | | | | | | | | |
Effective conversion price per share | $ / shares | | | $ 0.18 | | | | | | | | | | | | |
Stated value per share for redemption | $ / shares | | | $ 1,000 | | | | | | | | | | | | |
Preferred stock redemption date | | | Nov. 29, 2016 | | | | | | | | | | | | |
Preferred stock converted into common stock | 5,254,444 | | 5,554,667 | | | | | | | | | | | | |
Additional preferred stock converted into common stock | | | 2,221,867 | | | | | | | | | | | | |
Subsequent Event [Member] | Series A Preferred Stock [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock converted into common stock | 5,254,444 | | | | | | | | | | | | | | |
Subsequent Event [Member] | Huapont Life Sciences [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Revenues | $ | | | | | | $ 1,100,000,000 | | | | | | | | | |
Anti-dilution protection of equity interest | | | | | | 15.00% | | | | | | | | | |
Anti-dilution protection of post-money valuation | $ | | | | | | $ 20,000,000 | | | | | | | | | |
Number of tranches | Tranche | | | | | | 2 | | | | | | | | | |
Subsequent Event [Member] | Huapont Life Sciences [Member] | Series A Convertible Preferred Stock [Member] | Initial Tranche [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock, shares authorized | | | | 200,000 | | | | | | | | | | | |
Proceeds from issuance of preferred stock | $ | | | | $ 1,000,000 | | | | | | | | | | | |
Subsequent Event [Member] | Huapont Life Sciences [Member] | Series A Convertible Preferred Stock [Member] | Second Tranche [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock, shares authorized | | | | | | 400,000 | | | | | | | | | |
Proceeds from issuance of preferred stock | $ | | | | | | $ 2,000,000 | | | | | | | | | |
Subsequent Event [Member] | Huapont Life Sciences [Member] | Shenzhen Stock Exchange [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Current market capitalization | $ | | | | | | $ 3,000,000,000 | | | | | | | | | |
Subsequent Event [Member] | Huapont Life Sciences [Member] | Mainland China [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Number of employees | Employee | | | | | | 7,100 | | | | | | | | | |
Subsequent Event [Member] | Chief Executive Officer [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Related party transaction, net expenses paid by chief executive officer | $ | | | | | | | | | | | | | $ 1,063,865 | | |
Subsequent Event [Member] | Angionetics Inc. [Member] | Series A Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Percentage of stock convertible at pro rata basis | | | | | | 15.00% | | | | | | | | | |
Preferred stock conversion basis | | | | | | The Shares are initially convertible on a one to one basis into Angionetics common stock. | | | | | | | | | |
Subsequent Event [Member] | Angionetics Inc. [Member] | Huapont Life Sciences [Member] | Second Tranche [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Proceeds from issuance of preferred stock | $ | | $ 2,000,000 | | | | | | | | | | | | | |
Subsequent Event [Member] | Angionetics Inc. [Member] | Services Agreement [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Facilities costs payment percentage | | | | | | | 70.00% | | | | | | | | |
Subsequent Event [Member] | Pineworld Capital Limited [Member] | Huapont Life Sciences [Member] | Mainland China [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty expiration period | | | | | | 15 years | | | | | | | | | |
Subsequent Event [Member] | Minimum [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Effective conversion price per share | $ / shares | | | $ 0.18 | | | | | | | | | | | | |
Subsequent Event [Member] | Minimum [Member] | Pineworld Capital Limited [Member] | Huapont Life Sciences [Member] | Mainland China [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty percentage on net sales | | | | | | 5.00% | | | | | | | | | |
Subsequent Event [Member] | Maximum [Member] | Series A Convertible Preferred Stock [Member] | Exchange and Redemption Agreement with Sabby Healthcare Volatility Master Fund, Ltd. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Effective conversion price per share | $ / shares | | | $ 0.30 | | | | | | | | | | | | |
Subsequent Event [Member] | Maximum [Member] | Pineworld Capital Limited [Member] | Huapont Life Sciences [Member] | Mainland China [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty percentage on net sales | | | | | | 10.00% | | | | | | | | | |
Subsequent Event [Member] | Contribution Agreement [Member] | Angionetics Inc. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Technology fee payable upon earlier of qualified initial public offering | $ | | | | | | | $ 2,000,000 | | | | | | | | |
Shares lock up period | | | | | | | 12 months | | | | | | | | |
Subsequent Event [Member] | Contribution Agreement [Member] | Minimum [Member] | Angionetics Inc. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Percentage of outstanding capital stock | | | | | | | 9.99% | | | | | | | | |
Subsequent Event [Member] | Bayer Pharma AG [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Transfer agreement description | | | | | | | | Bayer Pharma AG agreed to the transfer of the Technology Transfer Agreement from Taxus Cardium to Angionetics. Accordingly, Angionetics has assumed the obligation for any milestone payment required to be paid to Bayer Pharma AG | | | | | | | |
Royalty percentage on net sales | | | | | | | | 5.00% | | | | | | | |
Royalties to net sales of other product | | | | | | | | 4.00% | | | | | | | |
Subsequent Event [Member] | Bayer Pharma AG [Member] | FGF-4 Based Product Without Infringe Patent [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty percentage on net sales | | | | | | | | 2.50% | | | | | | | |
Subsequent Event [Member] | Bayer Pharma AG [Member] | Other Products Without Infringe Patent [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Royalty percentage on net sales | | | | | | | | 2.00% | | | | | | | |
Subsequent Event [Member] | Bayer Pharma AG [Member] | Angionetics Inc. [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Milestone payment obligated as sale of product | $ | | | | | | | | $ 0 | | | | | | | |
Sales under transfer agreement | $ | | | | | | | | $ 0 | | | | | | | |
Subsequent Event [Member] | Share Purchase Agreement [Member] | Angionetics Inc. [Member] | Huapont Life Sciences [Member] | Series A Convertible Preferred Stock [Member] | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | |
Preferred stock, shares authorized | | | | | | 600,000 | | | | | | | | | |
Proceeds from issuance of preferred stock | $ | | | | | | $ 3,000,000 | | | | | | | | | |