CASH, CASH EQUIVALENTS AND INVESTMENTS (Details) - USD ($) $ in Thousands | May 31, 2017 | Feb. 28, 2017 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | $ 114,224 | $ 106,161 | |
Unrealized Gains (Losses) | | 425 | 310 | |
Fair Value | | 114,649 | 106,471 | |
Cash [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 41,914 | 39,322 | |
Unrealized Gains (Losses) | | | | |
Fair Value | | 41,914 | 39,322 | |
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 266 | 3,406 | |
Unrealized Gains (Losses) | | | | |
Fair Value | | 266 | 3,406 | |
Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 4,689 | 5,429 | [1] |
Unrealized Gains (Losses) | | 413 | 372 | [1] |
Fair Value | | 5,102 | 5,801 | [1] |
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 296 | 296 | [2] |
Unrealized Gains (Losses) | | 15 | (54) | [2] |
Fair Value | | 311 | 242 | [2] |
Fair Value, Inputs, Level 2 [Member] | Repurchase Agreements [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 43,500 | 24,000 | |
Unrealized Gains (Losses) | | | | |
Fair Value | | 43,500 | 24,000 | |
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Adjusted Cost | | 23,559 | 33,708 | |
Unrealized Gains (Losses) | | (3) | (8) | |
Fair Value | | 23,556 | 33,700 | |
Other Assets [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 5,413 | 6,043 | |
Other Assets [Member] | Cash [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Other Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Other Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [1] | 5,102 | 5,801 | |
Other Assets [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [2] | 311 | 242 | |
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Repurchase Agreements [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Cash and Cash Equivalents [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 108,690 | 93,706 | |
Cash and Cash Equivalents [Member] | Cash [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 41,914 | 39,322 | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 266 | 3,406 | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [1] | | | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [2] | | | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Repurchase Agreements [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 43,500 | 24,000 | |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 23,010 | 26,978 | |
Short Term Marketable Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | 546 | 6,722 | |
Short Term Marketable Securities [Member] | Cash [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Short Term Marketable Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Short Term Marketable Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Mutual Fund [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [1] | | | |
Short Term Marketable Securities [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | [2] | | | |
Short Term Marketable Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Repurchase Agreements [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | | | |
Short Term Marketable Securities [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | |
Fair Value | | $ 546 | $ 6,722 | |
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[1] | The Company has a non-qualified deferred compensation plan in which certain members of management and all non-employee directors are eligible to participate. The Company informally funds its obligations under the deferred compensation plan by purchasing shares in various equity, bond and money market mutual funds that are held in a "Rabbi Trust" and are restricted for payment of obligations to plan participants. The deferred compensation plan liability is included in Other Non-current Liabilities in the accompanying consolidated balance sheets. | |
[2] | The equity investment in a French licensee, in the form of publicly-traded common stock, is accounted for as an available-for-sale security and is valued at the quoted closing price on its market exchange. The related unrealized gains or losses are included in Accumulated Other Comprehensive Loss in the Stockholders' Equity section of the consolidated balance sheets. | |