UNAUDITED QUARTERLY FINANCIAL DATA (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 120,029	$ 128,048	$ 117,025	$ 110,856	$ 147,798	$ 142,063	$ 135,106	$ 128,128	$ 475,958	$ 553,095	$ 553,165
Gross margin	54,773	56,697	46,317	46,965	62,164	65,067	61,929	55,526	204,752	244,686	239,620
Net income (loss)	$ (52,402)	$ (299)	$ (11,227)	$ (10,755)	$ 12,905	$ 6,931	$ 1,248	$ (4,324)	$ (74,683)	$ 16,760	$ (21,474)
Basic and diluted net loss per share	$ (0.20)	$ 0.00	$ (0.04)	$ (0.04)
Basic net income (loss) per share					$ 0.05	$ 0.03	$ 0.00	$ (0.02)	$ (0.28)	$ 0.07	$ (0.09)
Diluted net income (loss) per share					$ 0.04	$ 0.03	$ 0.00	$ (0.02)	$ (0.28)	$ 0.06	$ (0.09)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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