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Amount of the current period expense (including discontinued operations) charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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SUMMARY OF ACCOUNTING POLICIES - Concentration of Credit Risk (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Apr. 21, 2016 customer
Allowance for doubtful accounts
Balance at Beginning of Year	$ 4,534	$ 5,529	$ 10,877
Charged to Costs and Expenses	72,295	650	2,029
Deductions/ Write-Offs	(12,221)	(1,645)	(7,377)
Balance at End of Year	64,608	4,534	5,529
Bad debt charge	61,006	0	0
Research and development costs	75,500	$ 35,200	$ 30,000
Customer one
Allowance for doubtful accounts
Bad debt charge	10,500
SunEdison, Inc
Allowance for doubtful accounts
Bad debt charge	$ 61,000
Net sales \| Customer one
Allowance for doubtful accounts
Concentration risk percentage	11.00%	17.00%	13.00%
Net sales \| Ten largest customers
Allowance for doubtful accounts
Concentration risk percentage	46.00%	50.00%	52.00%
Services Revenue \| Maximum
Allowance for doubtful accounts
Concentration risk percentage	10.00%
Accounts Receivable \| Customer one
Allowance for doubtful accounts
Concentration risk percentage	11.00%	15.00%
Subsequent Event \| SunEdison, Inc
Allowance for doubtful accounts
Number of major customers filed for bankruptcy \| customer				1
Communications Enterprise Compute (CEC) \| Accounts Receivable \| Customer two
Allowance for doubtful accounts
Concentration risk percentage	11.00%