I am having trouble loading a second controller to populate a select in my view. Despite my efforts, it just won't cooperate. This is the code snippet I'm using:

app.js

(function() {
'use strict';

angular
    .module('app.lazyload')
    .constant('APP_REQUIRES', {
      scripts: {
        'modernizr':          ['vendor/modernizr/modernizr.custom.js'],
        'icons':              ['vendor/fontawesome/css/font-awesome.min.css',
                               'vendor/simple-line-icons/css/simple-line-icons.css'],
        'companiesCtrl':      ['app/js/modules/companies/data.js','app/js/modules/companies/controller.js'],
        'companyDetailCtrl':    ['app/js/modules/companies/data.js','app/js/modules/companies/controller_detail.js'],
        'documentTypeCtrl':    ['app/js/modules/document_type/data.js','app/js/modules/document_type/controller.js']

    });

})();
////////////////////////////////////
.state('app.companies.detail', {
          url :'/companies.detail/',
          title : 'Company',
          templateUrl : helper.basepath('companies/companies.detail.html'),
          resolve : helper.resolveFor('companyDetailCtrl','documentTypeCtrl'),
          controller : ('companyDetailCtrl')
      })
      .state('app.companies.document_type', {
          url :'/companies.detail/',
          title : 'Document Type',
          templateUrl : helper.basepath('companies/companies.detail.html'),
          controller : ('documentTypeCtrl')
      })

company.detail/controller.js

(function() {
'use strict';
angular
    .module('assets4')
    .controller('companyDetailCtrl', companyDetailCtrl);

companyDetailCtrl.$inject = ['$scope','Data','$log', '$state'];

function companyDetailCtrl($scope, Data, $log, $state){
    $log.log('Controller > companyDetailCtrl loaded');
    Data.get('companies/'+$scope.company_id).then(function(data){
        $scope.companyDetail = data[0];
    });
};
})();

document_type/controller.js (this file is loaded correctly in browser)

(function() {
'use strict';
angular
    .module('assets4')
    .controller('documentTypeCtrl',documentTypeCtrl)

documentTypeCtrl.$inject = ['$scope','DataDocType','$log'];

function documentTypeCtrl($scope, DataDocType, $log, $state) {
    DataDocType.get('document_type').then(function(data){
        $scope.document_type = data;
        $log.log('Controller > documentTypeCtrl loaded');
    });
};
})();

EDIT > added companies/controller.js

(function() {
'use strict';
angular
    .module('assets4')
    .controller('companiesCtrl', companiesCtrl)

companiesCtrl.$inject = ['$scope','Data','$log', '$state'];

function companiesCtrl($scope, Data, $log, $state) {
    Data.get('companies').then(function(data){
        $scope.companies = data;
        $log.log('Controller > companiesCtrl loaded');
    });

    $scope.onRowClick = function(company_id){
        $scope.company_id = company_id;
        $state.go('app.companies.detail');
    };
};  
})();

EDIT > added companies.html

<div class="row" ng-controller="PanelsCtrl as panel">
<div class="col-xs-12">
    <div class="panel panel-default" >
        <div class="panel-heading">&nbsp;
            <paneltool tool-refresh="traditional"></paneltool>
        </div>
        <div class="panel-body">
            <div ui-view>
                <div class="table-responsive">
                    <table id="companiesGrid" class="table table-striped table-bordered table-hover">
                        <thead>
                            <tr>
                                <th>ID</th>
                                <th>{{ 'companies.grid.NAME' | translate }}</th>
                                <th>{{ 'companies.grid.DOCUMENT' | translate }}</th>
                                <th>{{ 'companies.grid.ADDRESS' | translate }}</th>
                                <th>{{ 'companies.grid.PHONE1' | translate }}</th>
                                <th>{{ 'companies.grid.EMAIL' | translate }}</th>
                            </tr>
                        </thead>
                        <tbody>
                            <tr ng-repeat="company in companies track by $index" ng-class="{'active': company.company_id}" ng-click="onRowClick(company.company_id)">
                                <td>{{company.company_id}}</td>
                                <td>{{company.company_name}}</td>
                                <td>{{company.company_document_number}}</td>
                                <td>{{company.company_address}}</td>
                                <td>{{company.company_phone1}}</td>
                                <td>{{company.company_email}}</td>
                            </tr>

                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>
</div>
</div>

EDIT > added companies.detail.html

<form role="form" class="form-horizontal"gt;
<div class="form-group">
    <label class="col-lg-2 control-label">{{'companies.grid.ID' | translate}}</label>
    <div class="col-lg-10">
        <input type="text" placeholder="" class="form-control" ng-model="companyDetail.company_id" disabled/>
    </div>
</div>
<div class="form-group">
    <label class="col-lg-2 control-label">{{'companies.grid.NAME' | translate}}</label>
    <div class="col-lg-10">
        <input type="text" placeholder="" class="form-control" ng-model="companyDetail.company_name"/>
    </div>
</div>
<div class="form-group mb">
   <label class="col-lg-2 control-label">Chosen Ajax</label>
   <div class="col-lg-10">
      <select chosen="" ng-model="document_type" ng-options="s for s in form.states" width="'100%'" class="chosen-select input-md">
         <option value=""></option>
      </select>
   </div>
</div>
... <!-- Additional form fields-->
</form>

app.company.detail is functioning perfectly and populating the entire form.
I have also tried using `ng-controller` but unfortunately, nothing seems to work. I am unable to access this specific code

$log.log('Controller > documentTypeCtrl loaded');

Could someone please point out what I might be doing wrong? As a newcomer to Angularjs, any guidance would be greatly appreciated.

Thank you.