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Variable Interest Entities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2016 | Mar. 31, 2015
Variable Interest Entity [Line Items] |  |  |
Variable Interest Entity, Ownership Percentage |  | 50.00% |
Printi LLC [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Liability equity award, fair value | $ 6,015 | $ 6,015 |
Liability equity award, expense recognized during period | $ 372 | $ 1,153 | $ 999

X
- Definition Liability equity award, expense recognized during period + References No definition available. + Details
Name: | cmpr_Liabilityequityawardexpenserecognizedduringperiod
Namespace Prefix: | cmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Liability equity award, fair value + References No definition available. + Details
Name: | cmpr_Liabilityequityawardfairvalue
Namespace Prefix: | cmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=52262685&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=cmpr_PrintiLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |