MERIDIAN, Idaho—The battle over whether two sex education books belong on the shelves of the Nampa (Idaho) Public Library is far from over.

The library board says it needs more time to determine whether copies of “The New Joy of Sex” and “The Joy of Gay Sex” should be stored in the director’s office and available only by request.

The board’s 3-2 vote to delay comes a month after it agreed to remove the books from the main shelves after a parent complained about easy access to children.

The recent vote also comes after more than half of the library’s staff asked the board to reverse decision, saying sequestering the books violates the vision and values of the library.

The letter was signed by 18 of the library’s 30 workers.