Commitments (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jul. 31, 2019 |
Jul. 31, 2018 |
Jul. 31, 2017 |
|
| Disclosure Text Block Supplement [Abstract] | |||
| Description Of Operating Leases | The Company leases equipment and office and laboratory space underseveral non-cancellable operating leases that expire through June 2028. Certain leases include renewal options and rent escalationclauses. An entity owned by certain executive officers/directors of the Company owns the building that the Company leases as itsmain facility for clinical laboratory operations and certain research operations. In addition to the minimum annual rentals ofspace, the lease is subject to annual increases, based on the consumer price index. Annual increases are limited to 3% per year | ||
| Maximum Annual Rental Increase Percentage | 3.00% | ||
| Rent expense Including Real Estate Taxes | $ 1,849 | $ 1,798 | $ 1,752 |
| Operating Leases, Rent Expense | 4,873 | $ 4,398 | $ 4,658 |
| Operating Leases, Rent Expense, Sublease Rentals | $ 134 | ||
| Agreement Renew Period | 2 years | ||
| Other Commitment, Due in Next Twelve Months | $ 2,498 | ||
| X | ||||||||||
- Definition Agreement renew period. No definition available.
|
| X | ||||||||||
- Definition This element represents the description of operating leases. No definition available.
|
| X | ||||||||||
- Definition Maximum annual rental increase percentage. No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense including real estate taxes during the period. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. No definition available.
|
| X | ||||||||||
- Definition The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
|
| X | ||||||||||
- Definition Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
|