XML 50 R36.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Nature of Operations and Summary of Significant Accounting Policies Purchase of Investment (Details) $ in Thousands | Jun. 30, 2018 USD ($)
--- | ---
Preferred stock | Automated Bookkeeping, Inc. [Member] |
Schedule of Cost-method Investments [Line Items] |
Cost Method Investments, Original Cost | $ 5,000

X
- Definition Original amount of cost-method investments at the acquisition date. + References No definition available. + Details
Name: | us-gaap_CostMethodInvestmentsOriginalCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfCostMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=jkhy_AutomatedBookkeepingInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |