Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 282	$ 84
Convertible preferred stock, par value	$ 0.001	$ 0.001
Convertible preferred stock, shares authorized	10,000us-gaap_TemporaryEquitySharesAuthorized	22,323us-gaap_TemporaryEquitySharesAuthorized
Convertible preferred stock, shares issued	0us-gaap_TemporaryEquitySharesIssued	21,357us-gaap_TemporaryEquitySharesIssued
Convertible preferred stock, shares outstanding	0	21,357
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000us-gaap_CommonStockSharesAuthorized	49,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	47,377us-gaap_CommonStockSharesIssued	16,063us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	47,117us-gaap_CommonStockSharesOutstanding	15,803us-gaap_CommonStockSharesOutstanding
Treasury stock, shares	260us-gaap_TreasuryStockShares	260us-gaap_TreasuryStockShares

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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