Business Combinations On February 21, 2012, we entered into an Agreement and Plan of Merger (the  Merger Agreement ) to acquire 100% of the common stock of SweetSpot. The merger was consummated on March 6, 2012 (the  Closing ). In accordance with the Merger Agreement, on the Closing, we issued 384,483 shares of our common stock having an aggregate value on the Closing of $3.9 million to the security holders of SweetSpot. The fair value of the contingent consideration at the Closing was determined to be $2.2 million using a probability-weighted discounted cash flow model with the key assumptions being the discount rate, the timing of expected achievement and the probability assigned to each milestone being achieved. During 2012 , approximately $1.1 million related to the contingent consideration was earned and paid through the issuance of 89,296 shares of our common stock. We may also issue up to 267,880 shares of our common stock in milestone payments contingent upon the achievement of certain other performance milestones. We have not issued any shares of common stock for milestone payments in 2013. We incurred acquisition-related costs of $0.3 million during 2012, which are recorded as general and administrative expense. SweetSpot is a healthcare-focused information technology company with a platform for uploading and processing data from certain diabetes devices to advance the treatment of diabetes. SweetSpot specializes in turning raw output from certain devices into information for healthcare providers, individuals and researchers. Through our acquisition of SweetSpot, we have a software platform that enables our customers to aggregate and analyze data from certain diabetes devices and to share it with their healthcare providers. The acquisition of SweetSpot has been recorded using the acquisition method of accounting in accordance with the authoritative guidance for business combinations. The allocation of purchase price is based on our valuation of the fair value of tangible and intangible assets acquired a