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Accrued Liabilities | 12 Months Ended
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May 31, 2018
Payables and Accruals [Abstract] |
ACCRUED LIABILITIES | ACCRUED LIABILITIES As of May 31, 2018 and 2017, accrued liabilities consist of the following:
| May 31, 2018 |  | May 31, 2017
(in thousands) |
Payroll and related expenses | $ | 10,235 |  |  | $ | 11,383 |
Royalties | 1,537 |  |  | 2,885 |
Accrued severance | 1,940 |  |  | 2,075 |
Sales and franchise taxes | 683 |  |  | 856 |
Outside services | 2,396 |  |  | 1,622 |
Litigation matters (Note 15) | 12,500 |  |  | 12,500 |
Acculis recall liability | — |  |  | 2,563 |
Other | 5,135 |  |  | 4,920 |
Total | $ | 34,426 |  |  | $ | 38,804 |
In the fourth quarter of fiscal year 2017, the Company issued a voluntary recall of its Acculis probes that were sold over the past two years and recorded a liability of $2.6 million. In the third quarter of fiscal year 2018, the Company completed the replacement of Acculis probes that were returned for Solero probes.

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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