Fair Value Measurements (Tables)

12 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair value of assets and liabilities on a recurring basis

	Balance at March 31, 2013		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
ASSETS
Cash and cash equivalents (1)	$	105,999	$	105,999	$	—	$	—
Restricted cash	5,488		5,488		—		—
Marketable securities (2)	12,012		12,012		—		—
	$	123,499	$	123,499	$	—	$	—
LIABILITIES
Contingent consideration related to acquisitions	$	5,336	—		$	—	$	5,336
	$	5,336	$	—	$	—	$	5,336

	Balance at March 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
ASSETS
Cash and cash equivalents (1)	$	134,444	$	134,444	$	—	$	—
Restricted cash	1,962		1,962		—		—
Marketable securities (2)	4,987		4,987		—		—
	$	141,393	$	141,393	$	—	$	—
LIABILITIES
Contingent consideration related to acquisitions	$	6,556	$	—	$	—	$	6,556
	$	6,556	$	—	$	—	$	6,556

____________________

(1) Cash and cash equivalents consists of money market funds.

(2) Marketable securities consists of fixed-income securities.

Company's assets and liabilities measured at fair value using significant unobservable inputs (Level 3)

	Total Liabilities
Balance at March 31, 2011	$	915
Acquisitions (Note 5)	6,104
Earnout payments	(463		)
Fair value adjustments	—
Balance at March 31, 2012	$	6,556
Acquisitions (Note 5)	2,862
Earnout payments (1)	(5,354		)
Fair value adjustments	1,272
Balance at March 31, 2013	$	5,336