Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2011
Related Party Transactions [Abstract]
Related Party Transactions	Note 12. Related Party Transactions Our Executive Vice President and Chief Scientific Officer, Dr. Morganroth, is a cardiologist who, through his wholly-owned professional corporation, provides medical professional services on behalf of the Company. Under this arrangement, Dr. Morganroth’s professional corporation receives a percentage fee of 80% of the net amounts we bill for Dr. Morganroth’s services to our customers (Percentage Fees). Our President and Chief Executive Officer is responsible for assigning the consulting work to internal and external resources, including Dr. Morganroth, based upon the requirements of the engagement. We recorded revenues in connection with services billed to customers under the consulting arrangement of approximately $0.4 million and $0.3 million in the three months ended September 30, 2010 and 2011, respectively, and $1.0 million in each of the nine-month periods ended September 30, 2010 and 2011. We incurred Percentage Fees of approximately $0.3 million in each of the three-month periods ended September 30, 2010 and 2011, respectively, and $0.8 million and $1.0 million in the nine months ended September 30, 2010 and 2011, respectively. At December 31, 2010 and September 30, 2011, we owed $0.2 million to the professional corporation for Percentage Fees. These amounts are included in accounts payable.

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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