Subsequent event	12 Months Ended
Dec. 31, 2014
Subsequent Event [Abstract]
Subsequent event	12. Subsequent events: Termination of credit agreement On February 23, 2015, the Company and the Lender mutually agreed to terminate the Credit Agreement. At the time of the termination of the Credit Agreement, no amount was owed by the Company under the Credit Agreement, and contemporaneously with the termination of the Credit Agreement, the warrants were likewise terminated. Series D Financing On March 24, 2015, the Company entered into subscription agreements (the "Subscription Agreements") with certain investors (each, an "Investor," and, collectively, the "Investors"). Under the terms of the Subscription Agreements, the Investors purchased an aggregate of 1,233,000 Units (each a "Unit," and, collectively, the "Units") at a purchase price of $1.00 per Unit for an aggregate purchase price of approximately $1,233. Each Unit consists of one (1) share of the Company's Series D-1 Preferred Stock and one (1) warrant to purchase 22.22 shares of the Company's Common Stock. The shares of Series D-1 Preferred Stock are convertible into shares of Common Stock at an initial conversion price of $0.0225 per share (subject to adjustment). The warrants issued to the Investors entitle the Investors to purchase up to an aggregate of approximately 27,400 shares of Common Stock. These warrants are exercisable for a period of three years from the date of issue and have an exercise price of $0.0225 per share.

Subsequent event

12 Months Ended

Dec. 31, 2014

12. Subsequent events:

Termination of credit agreement

On February 23, 2015, the Company and the Lender mutually agreed to terminate the Credit Agreement. At the time of the termination of the Credit Agreement, no amount was owed by the Company under the Credit Agreement, and contemporaneously with the termination of the Credit Agreement, the warrants were likewise terminated.

Series D Financing

On March 24, 2015, the Company entered into subscription agreements (the "Subscription Agreements") with certain investors (each, an "Investor," and, collectively, the "Investors"). Under the terms of the Subscription Agreements, the Investors purchased an aggregate of 1,233,000 Units (each a "Unit," and, collectively, the "Units") at a purchase price of $1.00 per Unit for an aggregate purchase price of approximately $1,233. Each Unit consists of one (1) share of the Company's Series D-1 Preferred Stock and one (1) warrant to purchase 22.22 shares of the Company's Common Stock. The shares of Series D-1 Preferred Stock are convertible into shares of Common Stock at an initial conversion price of $0.0225 per share (subject to adjustment). The warrants issued to the Investors entitle the Investors to purchase up to an aggregate of approximately 27,400 shares of Common Stock. These warrants are exercisable for a period of three years from the date of issue and have an exercise price of $0.0225 per share.