Fair Value Measurements and Auction Rate Securities (Tables)

12 Months Ended

Dec. 31, 2011

Fair Value Measurements and Auction Rate Securities [Abstract]

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation

The following table presents the assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) at December 31, 2011 and 2010 (in thousands):



	2011			2010

Auction rate securities:
Beginning balance as of January 1	$	2,001		$	2,152
Total gains or (losses) (realized or unrealized):
Recognized (losses) included in earnings	—			—
Recognized gains included in earnings	15			49
Settlements	(60		)	(200		)
Ending balance as of December 31	$	1,956		$	2,001

- 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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