The order backlog was amortized until December 31, 2014. The customer relations and digital library are amortized over a period of three years.
The excess of the purchase price over the assets acquired and liabilities assumed is reported as goodwill of €1.4 million. The goodwill results from synergies which relate to the expanded competencies obtained by voxeljet in the UK market and the skills of the voxeljet UK workforce.
6. Property, plant and equipment
| 03/31/2015 | 12/31/2014 | |||
| (€ in thousands) | ||||
| Land, buildings and leasehold improvements | 11,172 | 11,212 | ||
| Plant and machinery (includes assets under finance lease) | 6,709 | 6,486 | ||
| Other facilities, factory and office equipment | 1,543 | 1,240 | ||
| Assets under construction and prepayments made | 1,117 | 528 | ||
| Total | 20,541 | 19,466 | ||
| Leased assets included in Property, Plant and Equipment: | 2,135 | 2,282 | ||
| Printing machines | 1,777 | 2,246 | ||
| Other factory equipment | 358 | 36 | ||
