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4. Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

			December 31, 2012
Recurring Fair Value Measures Assets:	Level 1		Level 2		Level 3		Total
Marketable securities	$	31,467		-		-	$	31,467

Liabilities:
None		-		-		-		-

			December 31, 2011
Recurring Fair Value Measures Assets:	Level 1		Level 2		Level 3		Total
Marketable securities	$	74,787		-		-	$	74,787

Liabilities:
None		-		-		-		-

- 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).

+ References+ Details