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Fair Value Measurements
 6 Months Ended
Jun. 30, 2011
Fair Value Disclosures [Abstract]  
Fair Value Measurements
B)
Fair Value Measurements. The Financial Accounting Standards Board (“FASB”) issued authoritative guidance for fair value measurements, which defines fair value, establishes a framework for measuring fair value, and expands disclosures for assets and liabilities measured at fair value in financial statements. We adopted these provisions on January 1, 2008.

The fair value guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

For recognition purposes, on a recurring basis we are required to measure available for sale investments at fair value. We had no available for sale investments as of June 30, 2011 or December 31, 2010.

Our cash and cash equivalents, including money market securities, were $43.2 million and $39.9 million as of June 30, 2011 and December 31, 2010, respectively. We classified our cash and cash equivalents within Level 1 of the fair value hierarchy because they are valued using quoted market prices.