| (16) | Intangible assets |
| | | 2017 | | 2016 | | 2015 | | |||
| Amortizable intangible assets | | | | | | | | | | |
| Customer relationships | | $ | 1,028,747 | | | - | | | - | |
| Accumulated amortization | | | (34,876) | | | - | | | - | |
| Total net amortizable intangible assets | | | 993,871 | | | - | | | - | |
| Trade names not subject to amortization | | | 46,171 | | | | | | | |
| Total intangible assets | | $ | 1,040,042 | | | - | | | - | |