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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent events	Subsequent events Business Acquisition On January 13, 2014, the Company acquired certain assets of mVisum, Inc., an innovative provider of alarm management technology solutions for health systems, for $3.5 million cash in an asset purchase transaction. This new acquisition specifically addresses communications breakdowns caused by alarm fatigue, which has become a top patient safety concern and a regulatory priority. Alarm fatigue occurs when clinicians receive too many alarms during a given shift with too little context or data to assess the urgency or criticality of the alarms, which can negatively affect patient safety. The mVisum technology platform provides images and data, including waveforms like electrocardiograms, with the alarm notification directly to the physician, nurse or other members of the care team so that they can prioritize their response based on context and important information. The acquisition is expected to align well with the Company's strategic vision of being the leader in integrated, intelligent communications solutions for healthcare and other mission-critical environments. The Company is currently completing the preliminary purchase price allocation and expects the majority of the purchase consideration will be allocable to intangibles and goodwill.