Sale of Receivables (Tables)

12 Months Ended

Mar. 31, 2012

Disclosure of Securitized or Asset-backed Financing Arrangement Assets and Other Financial Assets Managed Together [Abstract]

Summary of the Company’s Accounts Receivable Securitization Information

 The following table summarizes the Company’s accounts receivable securitization information as of March 31:

	2012		2011
Receivables outstanding in facility as of March 31:	$	182,856	$	53,156
Beneficial interest as of March 31	$	25,864	$	15,797
Servicing Liability as of March 31	$	45	$	—
Cash proceeds for the twelve months ended March 31:
Cash purchase price	$	638,975	$	405,982
Deferred purchase price	274,194		240,989
Service fees	562		504
Total	$	913,731	$	647,475