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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - RESTRICTED CASH (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Mar. 31, 2015
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Restricted Cash and Investments [Abstract] |  |
Reserve account related to the Term Loans | $ 6,751 | $ 6,751
2013 Term Loans |  |
Restricted Cash and Investments [Abstract] |  |
Reserve account related to the Term Loans | 5,751 | 5,751
2013 Prospect Term Loan Agreement |  |
Restricted Cash and Investments [Abstract] |  |
Reserve account related to the Term Loans | $ 1,000 | $ 1,000

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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | cidm_RestrictedCashAndCashEquivalentsPurposeAxis=cidm_TwoThousandThirteenProspectTermLoanAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |