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Commitments and contingencies.

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Supply commitment remaining amount committed.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Amount of gain (loss) on sale or disposal of an equity method investment.

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No definition available.

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Commitments and Contingencies - Additional Information (Detail) $ in Thousands, ¥ in Millions								1 Months Ended		3 Months Ended		6 Months Ended
	Sep. 25, 2017 USD ($)	Feb. 27, 2012 USD ($)	Feb. 27, 2012 CNY (¥)	Oct. 08, 2011 USD ($)	Oct. 08, 2011 CNY (¥)	Sep. 13, 2011 USD ($)	Sep. 13, 2011 CNY (¥)	Mar. 31, 2011 USD ($)	Mar. 31, 2011 CNY (¥)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)
Commitments And Contingencies [Line Items]
Restricted cash included in long-term assets										$ 165		$ 165		$ 165
Gain on sale of minority interest										951	$ 0	951	$ 0
Derivative liabilities										1,224		1,224		1,923
Sinovel Wind Group Co. Ltd.
Commitments And Contingencies [Line Items]
Sought compensation amount		$ 16,000	¥ 105	$ 180,000	¥ 1,200	$ 73,000	¥ 485
Value of the undelivered components								$ 691,000	¥ 4,600
Infinia Technology Corporation (ITC)
Commitments And Contingencies [Line Items]
Consideration transferred, excluding contingent consideration	$ 3,800
Business combination, cash paid	$ 100
Acquisition contingent consideration
Commitments And Contingencies [Line Items]
Derivative liabilities										370		370		$ 0
Acquisition contingent consideration \| Infinia Technology Corporation (ITC)
Commitments And Contingencies [Line Items]
Derivative liabilities										$ 400		$ 400