SHARE BASED COMPENSATION (Details) - USD ($)
|
3 Months Ended |
9 Months Ended |
|
Jan. 31, 2016 |
Jan. 31, 2015 |
Jan. 31, 2016 |
Jan. 31, 2015 |
Sep. 16, 2015 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Stock-based compensation expense |
$ 787,000
|
$ 260,000
|
$ 1,400,000
|
$ 1,900,000
|
|
| Restricted Stock [Member] |
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|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Awards vested during period (in shares) |
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|
0
|
0
|
|
| Total unvested restricted share awards (in shares) |
107,536
|
|
107,536
|
|
|
| Weighted average grant date fair value (in dollars per share) |
$ 7.17
|
|
$ 7.17
|
|
|
| Unrecognized compensation cost related to non-vested share awards |
$ 96,000
|
|
$ 96,000
|
|
|
| 2008 Incentive Award Plan [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Number of shares (in shares) |
2,000,000
|
|
2,000,000
|
|
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| Performance period |
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|
1 year
|
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| Vesting percentage of awards on the last day of the performance period |
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|
50.00%
|
|
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| Vesting percentage on the first anniversary of the end of the performance period |
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|
50.00%
|
|
|
| Awards performance period of annual absolute total shareholder return (TSR) |
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|
3 years
|
|
|
| 2015 Incentive Plan [Member] |
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|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
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| Number of shares (in shares) |
4,250,000
|
|
4,250,000
|
|
|
| Term of award |
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|
10 years
|
|
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| Vesting percentage of awards on the last day of the performance period |
|
|
50.00%
|
|
|
| Vesting percentage on the first anniversary of the end of the performance period |
|
|
50.00%
|
|
|
| Awards performance period of annual absolute total shareholder return (TSR) |
|
|
3 years
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Performance period |
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|
3 years
|
|
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| Long term incentive plan, shares awarded under year one (in shares) |
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|
380,498
|
|
|
| Long term incentive plan, shares awarded under year two (in shares) |
|
|
353,535
|
|
|
| Long term incentive plan, shares awarded under year three (in shares) |
|
|
353,535
|
|
|
| Long term incentive plan, expected volatility rate |
|
|
16.60%
|
|
|
| Long term incentive plan, risk free interest rate |
|
|
1.13%
|
|
|
| Long term incentive plan, expected life |
|
|
3 years
|
|
|
| Weighted average grant date fair value (in dollars per share) |
|
|
|
|
$ 7.13
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Unrestricted Stock [Member] |
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|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
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| Performance period |
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|
31 months 15 days
|
|
|
| Percentage of awards payable |
50.00%
|
|
50.00%
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Restricted Stock [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Performance period |
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|
43 months 15 days
|
|
|
| Percentage of awards payable |
50.00%
|
|
50.00%
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Absolute TSR Performance Shares [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
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| Percentage of performance shares |
|
|
33.00%
|
|
|
| Weighting of performance metric utilized for market condition |
|
|
0.33
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Absolute TSR Performance Shares [Member] | Minimum [Member] |
|
|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with three-year performance period |
|
|
5.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with one-year performance period |
|
|
5.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with two-year performance period |
|
|
5.00%
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Absolute TSR Performance Shares [Member] | Maximum [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with three-year performance period |
|
|
10.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with one-year performance period |
|
|
10.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with two-year performance period |
|
|
10.00%
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Relative TSR Performance Shares [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Percentage of performance shares |
|
|
67.00%
|
|
|
| Weighting of performance metric utilized for market condition |
|
|
0.67
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Relative TSR Performance Shares [Member] | Minimum [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
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| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with three-year performance period |
|
|
42.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with one-year performance period |
|
|
46.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with two-year performance period |
|
|
43.00%
|
|
|
| 2015 Incentive Plan [Member] | 2016 LTIP Awards [Member] | Relative TSR Performance Shares [Member] | Maximum [Member] |
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with three-year performance period |
|
|
85.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with one-year performance period |
|
|
96.00%
|
|
|
| Calculated grant date fair value as a percentage of base salary for officers for LTIP awards with two-year performance period |
|
|
86.00%
|
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