20 Deferred revenue
| 2016 | 2017 | ||
CHF 1,000 | Current | Non-current | Current | Non-current |
Advance payments received related to product sales to be recognized upon delivery or customer’s acceptance | 12,119 | 46,945 | 12,686 | 38,960 |
Deferred income related to service contracts | 21,235 | – | 22,451 | – |
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|
|
Construction contracts in progress |
|
|
|
|
Aggregate amount of cost incurred and recognized profits | (1,009) | – | (4,119) | – |
Amounts of advances received | 1,034 | – | 5,316 | – |
Subtotal construction contracts in progress | 25 | – | 1,197 | – |
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|
|
|
|
Balance at December 31 | 33,379 | 46,945 | 36,334 | 38,960 |
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|
|
|
|
Increase/(decrease) |
| 28,571 |
| (5,311) |
Acquisition through business combination |
| 32 |
| – |
Translation differences |
| (276) |
| 281 |
Total change (current and non-current) compared with previous year |
| 28,327 |
| (5,030) |
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