Cash, Cash Equivalents, Short-term and Long-term Investments, Amortized Cost

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- Definition

Cash, Cash Equivalents, Short-term and Long-term Investments, Fair Value

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- Definition

Cash, Cash Equivalents, Short-term and Long-term Investments, Gross Unrealized Gain

+ References

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- Definition

Cash, Cash Equivalents, Short-term and Long-term Investments, Gross Unrealized Loss

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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CASH, CASH EQUIVALENTS, AND INVESTMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Mar. 31, 2014
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	$ 304,836	$ 276,850	$ 268,229	$ 232,704
Short-term investments (due in 1 year or less)	119,607	97,859
Long-term investments (due in 1 to 3 years)	81,132	107,590
Total cash, cash equivalents and investments measured at fair value, amortized cost	506,047	481,956
Total cash, cash equivalents and investments measured at fair value, gross unrealized gains	140	393
Total cash, cash equivalents and investments measured at fair value, gross unrealized losses	(612)	(50)
Total cash, cash equivalents and investments measured at fair value, fair value	505,575	482,299
Cash [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	299,808	273,350
Level 1 [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	29
Available-for-sale Securities, amortized cost basis	8,572
Available-for-sale Securities, gross unrealized gains	0
Available-for-sale Securities, gross unrealized losses	(484)
Available-for-sale Securities, fair value	8,088
Short-term investments (due in 1 year or less)	8,059
Long-term investments (due in 1 to 3 years)	0
Level 1 [Member] \| Money Market Funds [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	29
Available-for-sale Securities, amortized cost basis	29
Available-for-sale Securities, gross unrealized gains	0
Available-for-sale Securities, gross unrealized losses	0
Available-for-sale Securities, fair value	29
Level 1 [Member] \| Mutual Funds [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Available-for-sale Securities, amortized cost basis	8,543	5,398
Available-for-sale Securities, gross unrealized gains	0	147
Available-for-sale Securities, gross unrealized losses	(484)	(25)
Available-for-sale Securities, fair value	8,059	5,520
Short-term investments (due in 1 year or less)	8,059	5,520
Long-term investments (due in 1 to 3 years)	0	0
Level 2 [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	4,999	3,500
Available-for-sale Securities, amortized cost basis	197,667	203,208
Available-for-sale Securities, gross unrealized gains	140	246
Available-for-sale Securities, gross unrealized losses	(128)	(25)
Available-for-sale Securities, fair value	197,679	203,429
Short-term investments (due in 1 year or less)	111,548	92,339
Long-term investments (due in 1 to 3 years)	81,132	107,590
Level 2 [Member] \| Government Agency Securities [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Available-for-sale Securities, amortized cost basis	78,315	89,875
Available-for-sale Securities, gross unrealized gains	46	37
Available-for-sale Securities, gross unrealized losses	(6)	(22)
Available-for-sale Securities, fair value	78,355	89,890
Short-term investments (due in 1 year or less)	42,449	43,024
Long-term investments (due in 1 to 3 years)	35,906	46,866
Level 2 [Member] \| Commercial Paper [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	4,999	3,500
Available-for-sale Securities, amortized cost basis	23,759	17,574
Available-for-sale Securities, gross unrealized gains	11	10
Available-for-sale Securities, gross unrealized losses	(1)	0
Available-for-sale Securities, fair value	23,769	17,584
Short-term investments (due in 1 year or less)	18,770	14,084
Long-term investments (due in 1 to 3 years)	0	0
Level 2 [Member] \| Corporate Bonds [Member]
Schedule of Cash, Cash Equivalents and Investments [Line Items]
Cash and cash equivalents	0	0
Available-for-sale Securities, amortized cost basis	95,593	95,759
Available-for-sale Securities, gross unrealized gains	83	199
Available-for-sale Securities, gross unrealized losses	(121)	(3)
Available-for-sale Securities, fair value	95,555	95,955
Short-term investments (due in 1 year or less)	50,329	35,231
Long-term investments (due in 1 to 3 years)	$ 45,226	$ 60,724