Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

[FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract]

Schedule of Financial Assets At Fair Value

Financial assets and liabilities carried at fair value as of December 31, 2014 are classified in the following table:

Description	Fair Market Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs     (Level 3)		Total Changes in Fair Values Included in Current Period Earnings
Trading securities	$	7,180	$	7,180	$	-	$	-	$	1,364
Short-term investments		11,726		-		11,726		-		-

Financial assets and liabilities carried at fair value as of December 31, 2013 are classified in the following table:

Description	Fair Market Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs     (Level 3)		Total Changes in Fair Values Included in Current Period Earnings
Trading securities	$	5,634	$	5,634	$	-	$	-	$	235
Short-term investments		22,922		-		22,922		-		-