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.
7. Intangible assets
In the three and nine months ended September 30, 2015, the Company recognized an impairment charge of kEUR 309 on the digital library intangible asset at its voxeljet UK subsidiary due to lower than expected revenue generation.
8. Property, plant and equipment
| 09/30/2015 | 12/31/2014 | |||||||
| (€ in thousands) | ||||||||
| Land, buildings and leasehold improvements | 11 080 | 11 212 | ||||||
| Plant and machinery (includes assets under finance lease) | 8 110 | 6 486 | ||||||
| Other facilities, factory and office equipment | 1 678 | 1 240 | ||||||
| Assets under construction and prepayments made | 1 219 | 528 | ||||||
| Total | 22 087 | 19 466 | ||||||
| Leased assets included in Property, Plant and Equipment: | 1 867 | 2 282 | ||||||
| Printing machines | 1 586 | 2 246 | ||||||
| Other factory equipment | 281 | 36 | ||||||
