21 Contract liabilities

	01.01.2017 (Restated)		31.12.2017 (Restated)		31.12.2018
	Current	Non-current	Current	Non-current	Current	Non-current
CHF 1,000
Timing of revenue recognition: point in time
Advances for products	13,871	46,945	14,596	38,960	15,399	31,783

Timing of revenue recognition: over time
Advances for products	–	–	637	–	1,428	–
Service contracts, including service-type warranties	21,235	–	22,450	–	20,565	3,016

Total contract liabilities	35,106	46,945	37,683	38,960	37,392	34,799

Decrease				(5,688)		(3,940)
Translation differences				281		(512)
Total change (current and non-current)				(5,407)		(4,452)