| 
                Vanguard Intl Equity Index Fds-FTSE All World ex U.S. Index Fund
             | 
                        
                Jan 31, 2018
             | 
                        
                249.0K
             | 
                        
                240.7M
             | 
                        
                0.1%
             | 
                    
                
                        | 
                Vanguard/Wellington Fund Inc.
             | 
                        
                Feb 28, 2018
             | 
                        
                186.9K
             | 
                        
                166.3M
             | 
                        
                0.1%
             | 
                    
                
                        | 
                Harding, Loevner Funds, Inc-International Equity Portfolio
             | 
                        
                Jan 31, 2018
             | 
                        
                179K
             | 
                        
                173.1M
             | 
                        
                0.1%
             | 
                    
                
                        | 
                Harding, Loevner Funds, Inc.-Institutional Emerging Markets Portfolio
             | 
                        
                Jan 31, 2018
             | 
                        
                166.4K
             | 
                        
                160.9M
             | 
                        
                0.1%
             | 
                    
                
                        | 
                Schwab Strategic Tr-Schwab International Equity ETF
             | 
                        
                Feb 28, 2018
             | 
                        
                155.9K
             | 
                        
                138.7M
             | 
                        
                0.1%
             | 
                    
                
                        | 
                Harding, Loevner Funds, Inc.-Emerging Markets Portfolio
             | 
                        
                Jan 31, 2018
             | 
                        
                138.4K
             | 
                        
                133.8M
             | 
                        
                0.0%
             | 
                    
                
                        | 
                Vanguard Tax Managed Fund-Vanguard Developed Markets Index Fund
             | 
                        
                Dec 31, 2017
             | 
                        
                101.2K
             | 
                        
                100.3M
             | 
                        
                0.0%
             | 
                    
                
                        | 
                DFA Emerging Markets Series
             | 
                        
                Jan 31, 2018
             | 
                        
                52.5K
             | 
                        
                50.8M
             | 
                        
                0.0%
             | 
                    
                
                        | 
                JP Morgan International Equity Fund
             | 
                        
                Jun 30, 2018
             | 
                        
                72.7K
             | 
                        
                66.8M
             | 
                        
                0.0%
             | 
                    
                
                        | 
                Vanguard Intl Equity Index - Total World Stock Index Fd
             | 
                        
                Jan 31, 2018
             | 
                        
                43.2K
             | 
                        
                41.7M
             | 
                        
                0.0%
             |