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COLLABORATIVE RESEARCH AND DEVELOPMENT AGREEMENTS (Details) (USD $)
1 Months Ended 3 Months Ended
Jul. 31, 2012
Mar. 31, 2015
Mar. 31, 2014
(DPP?) Technology [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   $ 1,257,000cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_DualPathPlatformTechnologyMember
 
Maximum amount of development agreement 271,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_DualPathPlatformTechnologyMember
  1,268,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_DualPathPlatformTechnologyMember
Period in which development activity is to be completed   6 months  
Research and development payments received under the agreement   221,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_DualPathPlatformTechnologyMember
13,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_DualPathPlatformTechnologyMember
RVR DENGUE [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   150,000cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRDENGUEMember
0cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRDENGUEMember
Maximum amount of development agreement     300,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRDENGUEMember
Research and development payments received under the agreement   90,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRDENGUEMember
0us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRDENGUEMember
RVR TECH [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   1,125,000cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRTECHMember
750,000cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRTECHMember
Maximum amount of development agreement     1,500,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRTECHMember
Research and development payments received under the agreement   0us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRTECHMember
750,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_RVRTECHMember
Brain [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   127,500cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_BrainMember
0cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_BrainMember
Maximum amount of development agreement     846,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_BrainMember
Research and development payments received under the agreement   127,500us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_BrainMember
0us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_BrainMember
TBS [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   75,000cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_TBSMember
0cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_TBSMember
Maximum amount of development agreement     320,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_TBSMember
Research and development payments received under the agreement   75,000us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_TBSMember
0us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_TBSMember
Gates [Member]      
Research and Development Arrangement, Contract to Perform for Others [Line Items]      
Revenue from grants from inception   133,900cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_GatesMember
0cemi_RevenueFromGrantsFromInception
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_GatesMember
Maximum amount of development agreement     307,000cemi_MaximumAmountOfDevelopmentAgreement
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_GatesMember
Research and development payments received under the agreement   $ 133,900us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_GatesMember
$ 0us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersCompensationEarned
/ us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersByTypeAxis
= cemi_GatesMember