Fair Value of Financial Instruments

9 Months Ended

Dec. 31, 2011

Fair Value of Financial Instruments

Fair Value of Financial Instruments

(14)Fair Value of Financial Instruments

The following methods and assumptions were used to estimate the fair value of each class of financial instruments.

Cash and cash equivalents, accounts receivable, and accounts payable:

The carrying amounts approximate fair value because of the short maturity of these instruments.

Investments:

The carrying value of these instruments is the amortized cost of the investments which approximates fair value. See Note 4.