Stock-based Compensation (Details Textual)
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3 Months Ended |
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May 31, 2019
USD ($)
share_based_compensation_plan
$ / shares
shares
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Feb. 28, 2019
$ / shares
shares
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| Share Based Compensation (Textual) [Abstract] |
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| Number Of Share-Based Compensation Plans | share_based_compensation_plan |
2
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| Unrecognized compensation cost | $ |
$ 10,100,000
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| Restricted Stock [Member] |
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| Share Based Compensation (Textual) [Abstract] |
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| Vesting ratably term |
3 years
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| Performance Shares [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |
112,037
|
83,125
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares |
$ 40.84
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$ 42.69
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| Share Based Compensation (Textual) [Abstract] |
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| Vesting ratably term |
3 years
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |
47,774
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares |
$ 42.00
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |
0
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ / shares |
$ 0.00
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |
(18,862)
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value | $ / shares |
$ 55.85
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| Stock Appreciation Rights (SARs) [Member] |
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| Share Based Compensation (Textual) [Abstract] |
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| Vesting ratably term |
3 years
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| Term for the contract |
7 years
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| Outstanding Average contractual term |
1 year 7 months 1 day
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| Outstanding Aggregate intrinsic value | $ |
$ 0
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| Employee Stock [Member] |
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| Share Based Compensation (Textual) [Abstract] |
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| Term of offering under stock purchase plan |
24 months
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| Granted option lower than |
85.00%
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| Restricted common stock under plan | $ |
$ 25,000
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| Common stock purchased during period (shares) |
5,000
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| 2014 Long Term Incentive Plan [Member] |
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| Share Based Compensation (Textual) [Abstract] |
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| Shares authorized (shares) |
1,500,000.0
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| Share for future issuance (shares) |
1,200,000.00
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| 2005 Long Term Incentive Plan [Member] |
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| Share Based Compensation (Textual) [Abstract] |
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| Shares authorized (shares) |
100,000.0
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