The phrase "to overlook some details" means to miss or fail to notice certain small or important pieces of information or elements. It suggests that someone is not paying enough attention or not being thorough enough. Full definition
The purpose of a pain diary is to capture important, often overlooked details a doctor might find helpful. (sciencedaily.com)
Perhaps the most obvious lesson was to carefully purchase a home within one's budget and not overlook details in the terms of the loan. (mybanktracker.com)
Most employers will not overlook details in a reference - checking and employment verification process. (ventureready.net)