Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2013

Fair Value Measurements [Abstract]

Assets carried at fair value measured on a recurring basis

The following table provides the assets carried at fair value measured on a recurring basis.

Asset Class	Fair Value		Quoted Prices in Active Markets for Identical Assets(Level 1)		Significant Other Observable Inputs(Level 2)		Significant Unobservable Inputs(Level 3)
June 30, 2013
Short-term investments:
U.S. Government and Agency debt securities	$	5,805,000	$	-	$	5,805,000	$	-
Long-term investments:
U.S. Government and Agency debt securities		400,000		-		400,000		-
March 31, 2013
Short-term investments:
U.S. Government and Agency debt securities	$	3,757,000	$	-	$	3,757,000	$	-
Long-term investments:
U.S. Government and Agency debt securities		3,452,000		-		3,452,000		-