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Commitments and Contingencies - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2010
Commitments and Contingencies Disclosure [Line Items] |  |
Minimum term of non-cancellable operating leases | 1 year |
Expiration of non-cancellable operating leases maximum year | 2019 |
Financing for leasehold improvement |  | $ 1,100,000 cers_ProceedsFromLandlordFinancingLeaseholdImprovement
Outstanding liability related to leasehold improvements | 600,000 cers_OutstandingLiabilityRelatedToLeaseholdImprovementsCurrentAndNonCurrent |
Leasehold Improvements reflected in Accrued liabilities | 100,000 cers_LeaseholdImprovementReflectedInAccruedLiabilities |
Leasehold Improvements reflected in Other non-current liabilities | 500,000 cers_LeaseholdImprovementReflectedInOtherNonCurrentLiabilities |
Additional Concord Lease |  |
Commitments and Contingencies Disclosure [Line Items] |  |
Initial term of operating lease | 2 years |
Number of renewal options | 4 cers_OperatingLeaseNumberOfAdditionalRenewalOption / us-gaap_LeaseArrangementTypeAxis = cers_AdditionalConcordLeaseMember |
Renewal period of operating lease | 2 years |
Future rent payment, 2015 | 121,136 us-gaap_OperatingLeasesFutureMinimumPaymentsRemainderOfFiscalYear / us-gaap_LeaseArrangementTypeAxis = cers_AdditionalConcordLeaseMember |
Future rent payment, 2016 | 172,592 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears / us-gaap_LeaseArrangementTypeAxis = cers_AdditionalConcordLeaseMember |
Future rent payment, 2017 | $ 105,056 us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears / us-gaap_LeaseArrangementTypeAxis = cers_AdditionalConcordLeaseMember |

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- Details
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- Definition Latest period of expiration of non-cancelable operating lease. + References No definition available. + Details
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- Definition Portion of outstanding liability related to leasehold improvement reflected in accrued liabilities. + References No definition available. + Details
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- Definition Portion of outstanding liability related to leasehold improvement reflected in other non current liabilities. + References No definition available. + Details
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- Definition Minimum term of non-cancelable operating lease. + References No definition available. + Details
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- Definition Operating Lease Number Of Additional Renewal Option + References No definition available. + Details
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Balance Type: | na
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- Definition Outstanding liability related to leasehold improvements current and non current. + References No definition available. + Details
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- Definition Proceeds from landlord for financing leasehold improvement. + References No definition available. + Details
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Balance Type: | debit
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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