CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (1,826)	$ (4,044)
Adjustments to reconcile net loss to net cash provided by operating activites:
Depreciation	4,463	3,598
Amortization of intangible assets	2,741	2,565
Impairment of long-lived assets	15	640
Amortization of capitalized software	442	456
Net accretion of discount and amortization of premium on marketable securities	228	584
Stock-based compensation expense	15,630	11,202
Deferred income tax (benefit) provision	(104)	361
Other	574	467
Changes in assets and liabilities:
Accounts receivable, net	(3,267)	(3,138)
Inventory	(87)	(122)
Other current and noncurrent assets	(1,065)	(1,699)
Deferred cost of goods sold	(86)	(156)
Accounts payable	1,732	418
Accrued compensation	2,146	3,351
Accrued warranty	(36)	(17)
Accrued taxes	(21)	1,837
Deferred revenue	168	(427)
Accrued outside commissions	657	256
Other current and noncurrent liabilities	(84)	(748)
Net cash provided by operating activities	22,220	15,384
Cash flows from investing activities:
Purchases of property and equipment	(6,509)	(3,295)
Cost of capitalized software	(3,939)	(1,275)
Purchase of businesses, net of cash acquired	0	(23,434)
Proceeds from maturity of investments	47,625	38,451
Sales of investments - available for sale	34,821	43,934
Purchase of investments - available for sale	(92,647)	(90,025)
Net cash used in investing activities	(20,649)	(35,644)
Cash flows from financing activities:
Capital lease payments	(460)	(321)
Payment of contingent consideration and escrow	(300)	(200)
Repurchase of common stock	(2,828)	(11,628)
Proceeds from issuance of common stock under employee stock plans	2,694	2,848
Net cash used in financing activities	(894)	(9,301)
Effect of exchange rate changes on cash	(796)	317
Net decrease in cash and cash equivalents	(119)	(29,244)
Cash and cash equivalents, beginning of the period	33,576
Cash and cash equivalents, end of the period	33,457
Supplemental cash flow information
Income taxes paid	350	441
Interest paid	16	30
Non-cash investing and financing activities
Property and equipment acquired under capital leases	$ 823	$ 0