Goodwill and Acquired Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Expected Amortization Expense for Acquired Intangible Assets

Expected amortization expense for acquired intangible assets for each of the following periods is as follows:

	Amortization
	(In thousands)
Expected for fiscal year 2018	$	11,733
Expected for fiscal year 2019		9,076
Expected for fiscal year 2020		7,312
Expected for fiscal year 2021		4,993
Expected for fiscal year 2022		3,171
Thereafter		5,392
	$	41,677

Allocation of Other Acquired Intangible Assets and Related Accumulated Amortization

The allocation of the other acquired intangible assets and the related accumulated amortization as of March 31, 2017 and 2016 is as follows:

	Weighted Average Useful Life		As of March 31, 2017							As of March 31, 2016
			Total		Accumulated Amortization			Net book Value		Total		Accumulated Amortization			Net book Value
	(In years)		(In thousands)
Technology		6	$	87,592	$	(62,749	)	$	24,843	$	74,848	$	(59,921	)	$	14,927
Contracts and customer relationships		7		103,034		(89,083	)		13,951		99,499		(83,928	)		15,571
Satellite co-location rights		9		8,600		(6,743	)		1,857		8,600		(5,818	)		2,782
Trade name		3		5,940		(5,940	)		—		5,940		(5,918	)		22
Other		6		9,925		(8,899	)		1,026		8,717		(8,415	)		302
Total other acquired intangible assets			$	215,091	$	(173,414	)	$	41,677	$	197,604	$	(164,000	)	$	33,604