Financial Assets (Details) SFr in Thousands	12 Months Ended
Dec. 31, 2017 CHF (SFr) Deposit	Dec. 31, 2016 CHF (SFr)
Financial Assets [Abstract]
Number of deposits in escrow accounts \| Deposit	2
Deposits in escrow accounts \| SFr	SFr 126	SFr 86

The amount of non-current restricted cash and cash equivalents. [Refer: Restricted cash and cash equivalents]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_55&doctype=Standard
-URIDate 2016-03-31

Name:	ifrs-full_NoncurrentRestrictedCashAndCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant