Stock-Based Compensation - Changes in RSUs Granted as Inducement Awards (Details) - Restricted Stock Units (RSUs) [Member] - Inducement Awards [Member] - $ / shares |
3 Months Ended | |
|---|---|---|
Nov. 04, 2019 |
May 30, 2020 |
|
| Number of Restricted Stock Units | ||
| Unvested shares, beginning of period (in shares) | 579,000 | |
| Granted (in shares) | 578,753 | 816,000 |
| Vested (in shares) | (274,000) | |
| Forfeited (in shares) | 0 | |
| Unvested shares, end of period (in shares) | 1,121,000 | |
| Weighted Average Grant-Date Fair Value | ||
| Unvested shares, Weighted Average Grant Date Fair Value, beginning of period (in dollars per share) | $ 13.65 | |
| Granted, Weighted Average Grant Date Fair Value (in dollars per share) | 6.33 | |
| Vested, Weighted Average Grant Date Fair Value ( in dollars per share) | 13.65 | |
| Forfeited, Weighted Average Grant-Date Fair Value (in dollars per share) | 0 | |
| Unvested shares, Weighted Average Grant Date Fair Value, end of period (in dollars per share) | $ 8.32 |