Subsequent Events	6 Months Ended
Jun. 30, 2013
Subsequent Events [Abstract]
Subsequent Events	7. Subsequent Events *Initial Public Offering* On July 29, 2013, we sold 2,500,000 shares of common stock at a public offering price of $10.00 per share upon the closing of our initial public offering ("IPO") with estimated net proceeds of $22.1 million (gross proceeds of $25 million). On August 15, 2013, we sold an additional 100,000 shares of common stock at a public offering price of $10.00 per share pursuant to the partial exercise of the over-allotment option granted to the underwriters resulting in additional gross proceeds to the Company of $1,000,000 and additional net proceeds of $930,000. The total gross proceeds raised from the offering and over-allotment option were $26,000,000, before underwriting discounts and commissions and other offering expenses payable by the Company and the total estimated net proceeds were $23 million. Upon the closing of the IPO, all shares of our then-outstanding preferred stock automatically converted into an aggregate of 1,696,683 shares of common stock. In addition, upon the closing of the IPO, we issued an additional 36,167 shares of our common stock to the Series B Preferred Stockholders as discussed above under "Series B Financing" and our obligation to issue, and the Series B Preferred Stockholders, obligation to purchase, Series B-2 Preferred Stock under the Stock Purchase Agreement terminated. On August 27, 2013 we repaid the entire outstanding balance in the amount of $725,000 to Square 1 Bank and the loan agreement with Square 1 Bank was terminated. On September 3, 2013, the Company received written notification from the underwriters of their partial exercise of the over-allotment option to purchase an additional 100,000 shares of the Company's common stock, at a price to the public of $10.00 per share. The closing is scheduled to occur on September 6, 2013.

7. Subsequent Events

Initial Public Offering

On July 29, 2013, we sold 2,500,000 shares of common stock at a public offering price of $10.00 per share upon the closing of our initial public offering ("IPO") with estimated net proceeds of $22.1 million (gross proceeds of $25 million). On August 15, 2013, we sold an additional 100,000 shares of common stock at a public offering price of $10.00 per share pursuant to the partial exercise of the over-allotment option granted to the underwriters resulting in additional gross proceeds to the Company of $1,000,000 and additional net proceeds of $930,000. The total gross proceeds raised from the offering and over-allotment option were $26,000,000, before underwriting discounts and commissions and other offering expenses payable by the Company and the total estimated net proceeds were $23 million. Upon the closing of the IPO, all shares of our then-outstanding preferred stock automatically converted into an aggregate of 1,696,683 shares of common stock. In addition, upon the closing of the IPO, we issued an additional 36,167 shares of our common stock to the Series B Preferred Stockholders as discussed above under "Series B Financing" and our obligation to issue, and the Series B Preferred Stockholders, obligation to purchase, Series B-2 Preferred Stock under the Stock Purchase Agreement terminated.

On August 27, 2013 we repaid the entire outstanding balance in the amount of $725,000 to Square 1 Bank and the loan agreement with Square 1 Bank was terminated.

On September 3, 2013, the Company received written notification from the underwriters of their partial exercise of the over-allotment option to purchase an additional 100,000 shares of the Company's common stock, at a price to the public of $10.00 per share. The closing is scheduled to occur on September 6, 2013.