CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 1,743	$ 4,459
Adjustments to reconcile net income to net cash provided by operating activites:
Depreciation	2,513	1,888
Amortization of intangible assets	1,687	1,074
Amortization of capitalized software	255	92
Net accretion of discount and amortization of premium on marketable securities	659	0
Gain on disposal of discontinued operations	0	(589)
Gain on escrow settlement	0	(565)
Stock-based compensation	6,489	5,245
Deferred income tax provision	2,444	87
Other	268	490
Changes in assets and liabilities:
Accounts receivable, net	(2,062)	(1,104)
Inventory	235	(245)
Other current and non-current assets	(505)	(570)
Deferred cost of goods sold	(179)	211
Accounts payable	(736)	(1,290)
Accrued compensation	2,044	1,217
Accrued warranty	(237)	182
Accrued taxes and fees	561	62
Deferred revenue	(840)	757
Other current and non-current liabilities	(564)	172
Net cash provided by operating activities	13,775	11,573
Cash flows from investing activities:
Purchases of property and equipment	(4,523)	(2,081)
Cost of capitalized software	(456)	(590)
Acquisition of business, net of cash acquired	0	(18,474)
Proceeds from disposition of discontinued operations, net of transaction costs	0	3,000
Proceeds from maturity of investments	31,400	0
Sales of investments - available for sale	29,580	0
Purchases of investments - available for sale	(77,821)	0
Net cash used in investing activities	(21,820)	(18,145)
Cash flows from financing activities:
Capital lease payments	(115)	(26)
Repurchase of common stock	(1,723)	(320)
Proceeds from issuance of common stock, net of issuance costs	0	125,758
Proceeds from issuance of common stock under employee stock plans	2,666	2,959
Net cash provided by financing activities	828	128,371
Effect of exchange rate changes on cash	656	10
Net (decrease) increase in cash and cash equivalents	(6,561)	121,809
Cash and cash equivalents at the beginning of the period	59,159	50,305
Cash and cash equivalents at the end of the period	52,598	172,114
Supplemental cash flow information
Income taxes paid	181	479
Interest paid	$ 25	$ 4