The following table represents the fair value hierarchy for our financial assets (cash equivalents and investments in marketable securities) measured at fair value on a recurring basis (in thousands):

	Level 1		Level 2		Level 3		Total

December 31, 2011:
Available for sale securities:
Money market funds(1)	$	9,237	$	—	$	—	$	9,237

December 31, 2010:
Available for sale securities:
Money market funds(1)	$	39,283	$	—	$	—	$	39,283

(1)

Included in “Cash and cash equivalents” in the consolidated balance sheets as of December 31, 2011 and 2010 in addition to $20.6 million and $20.3 million, respectively, of cash. Unrealized gains and losses on money market funds were nominal due to the short-term nature of the investments.

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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- Definition

Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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