Fair Value (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Fair Value at March 31, 2013		Level 1		Level 2		Level 3
Money market demand accounts and investment grade fixed income securities	$	232,539	$	-	$	-
Short term investments	$	-	$	53,000	$	-
Fair Value at December 31, 2012		Level 1		Level 2		Level 3
Money market demand accounts and investment grade fixed income securities	$	60,425	$	-	$	-