The details link is still there. It may only come up when you search for the business specifically. If that's not working, leave me an example and I'll try to get it working.
If you can find the details button and you mean that it now just redirects to map instead of the listing, just right click on "details" and save the link location. Inside the link location is the URL to the individual listing, you just need to delete everything after the unique number identifier. If you actually click on the details link it will redirect to Maps.
Let me know if you need more help!