Goodwill and intangible assets (Tables)

9 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

Goodwill and other intangibles, net, consist of the following at:

	December 31, 2015				March 31, 2015
(in thousands)	Gross amount		Accumulated amortization		Gross amount		Accumulated amortization
Acquired developed technologies	$	9,324	$	5,485	$	9,324	$	4,507
Goodwill	10,657		—		10,657		—
Total	$	19,981	$	5,485	$	19,981	$	4,507

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

At December 31, 2015, the remaining amortization expense is estimated to be as follows (in thousands):

Remainder of fiscal year 2016	$	325
Fiscal year 2017	1,300
Fiscal year 2018	1,287
Fiscal year 2019	306
Fiscal year 2020	129
Thereafter	492
Total	$	3,839