|
Equity Incentive Plans and Benefit Plans - Market Stock Units (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
|
6 Months Ended |
3 Months Ended |
|
Jan. 31, 2015
|
Jan. 31, 2014
|
Oct. 31, 2014
tranche
|
Jan. 31, 2014
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] |
|
|
|
|
| Dividend yield |
0.00% |
0.00% |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
|
|
| Share market value |
$ 16.58 |
|
|
|
| Market stock units [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Awards granted |
|
|
595,000 |
0 |
| Percentage of shares to be earned upon performance achievement |
|
|
100.00% |
|
| Performance achievement period |
|
|
3 years |
|
| Number of tranches granted |
|
|
3 |
|
| Maximum percentage of target number of shares initially granted to be received |
|
|
150.00% |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] |
|
|
|
|
| Risk-free interest rates |
1.03% |
|
|
|
| Expected term (in years) |
2 years 10 months 13 days |
|
|
|
| Dividend yield |
0.00% |
|
|
|
| Volatility |
50.73% |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
|
|
| Awarded |
|
|
595,000 |
0 |
| Ending Balance |
565,000 |
|
|
|
| MSUs outstanding, Weighted Average Remaining Contractual Life |
2 years 6 months |
|
|
|
| MSUs outstanding, Aggregate Intrinsic Value |
$ 9,368 |
|
|
|
| MSUs vested and expected to vest, Number of Shares |
531,773 |
|
|
|
| MSUs vested and expected to vest, Weighted Average Remaining Contractual Life |
2 years 6 months |
|
|
|
| MSUs vested and expected to vest, Aggregate Intrinsic Value |
$ 8,817 |
|
|
|
| Market Stock Units, Target Shares Granted [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Awards granted |
595,000 |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
|
|
| Beginning Balance |
|
|
|
|
| Awarded |
595,000 |
|
|
|
| Forfeited |
(30,000) |
|
|
|
| Ending Balance |
565,000 |
|
|
|
| Market Stock Units, Maximum Shares Eligible to Receive [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Awards granted |
892,500 |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
|
|
| Beginning Balance |
|
|
|
|
| Awarded |
892,500 |
|
|
|
| Forfeited |
0 |
|
|
|
| Ending Balance |
892,500 |
|
|
|
| Tranche 3 [Member] | Market stock units [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Performance achievement period |
|
|
3 years |
|
| Weighted average grant date fair value of awards granted |
|
|
26.74 |
|
| Tranche 2 [Member] | Market stock units [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Performance achievement period |
|
|
2 years |
|
| Weighted average grant date fair value of awards granted |
|
|
26.90 |
|
| Tranche 1 [Member] | Market stock units [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
| Performance achievement period |
|
|
1 year |
|
| Weighted average grant date fair value of awards granted |
|
|
28.10 |
|