How to set equal height to neighbours divs using aungularjs?

Here is my code: JSFiddle

At start my panels are hidden and then after button click I want to show every panel with equal height (I want to streche panel-body). Thank you so much for help!

    var app = angular.module("myApp", []).controller("myCtrl", function($scope) {
  $scope.isActive = false;

  $scope.toogle = function () {
    $scope.isActive = !$scope.isActive;
  };
});