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Summary of Significant Accounting Policies (Narratives) (Details) |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 14, 2017 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jun. 30, 2017 USD ($) Distribution_Channels | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Oct. 28, 2016 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of distribution channels | Distribution_Channels |  |  |  | 2 |  |  |
Maximum investment in one obligor or maker (percent) |  |  |  | 10.00% |  |  |
Available-for sale investments in debt securities |  |  |  | $ 0 | $ 0 |  |
Transfers of assets between Level 1 and Level 2 |  |  |  | 0 | 0 |  |
Transfers of Liabilities between Level 1 and Level 2 |  |  |  | 0 | 0 |  |
Fair value of derivative instruments under foreign currency contracts |  |  |  | 27,000 |  |  |
Long-term debt, estimated fair value |  |  |  | 93,700,000 | 55,500,000 |  |
Purchases of non-marketable equity investment |  |  |  |  |  | $ 3,000,000 |
Transfers of assets between Level 2 and Level 3 |  |  |  | 0 | 0 |  |
Transfers of liabilities between Level 2 and Level 3 |  |  |  | 0 | 0 |  |
Intangible asset and goodwill impairment |  |  |  | 0 | 0 |  |
Inventory, net |  |  |  | 45,880,000 | 40,989,000 |  |
Depreciation expense recognized related to property and equipment |  |  |  | 10,618,000 | 10,802,000 | 12,832,000 |
Goodwill acquired in period |  |  |  | 9,339,000 |  |  |
Service parts held to support customers |  |  |  | 10,100,000 | 16,000,000 |  |
Borrowings under Term Loan |  |  |  | 48,250,000 |  |  |
Deferred financing costs |  |  |  | 1,300,000 |  |  |
Amortization of deferred financing costs |  |  |  | 500,000 | 500,000 | 400,000 |
Outstanding letters of credit |  |  |  | $ 900,000 | 900,000 |  |
Standard hardware warranty period (in months) |  |  |  | 12 months |  |  |
Standard software warranty period (in days) |  |  |  | 90 days |  |  |
Limited lifetime hardware warranty maximum period after end of sale of product (in years) |  |  |  | 5 years |  |  |
Advertising expenses |  |  |  | $ 400,000 | $ 300,000 | $ 500,000 |
Minimum percentage of tax benefit realized upon settlement |  |  |  | 50.00% |  |  |
Revolving Loan Facility |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowings available under facility |  |  |  | $ 39,100,000 |  |  |
Revolving Loan Facility | Second Amendment | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended | $ 60,000,000 |  |  |  |  |  |
Term Loan | Second Amendment | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended | 183,700,000 |  |  |  |  |  |
Credit Facility |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended |  |  |  |  |  |  | $ 140,500,000
Credit Facility | Second Amendment | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended | $ 243,700,000 |  |  |  |  |  |
Zebra Technologies Corporation | Swing line loan sub facility |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended |  |  | $ 5,000,000 |  |  |  |
Zebra Technologies Corporation | Revolving Loan Facility |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended |  |  | $ 50,000,000 |  |  |  |
Credit Facility, as amended term |  |  | 5 years |  |  |  |
Zebra Technologies Corporation | Term Loan |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended |  |  | $ 90,500,000 |  |  |  |
Credit Facility, as amended term |  |  | 5 years |  |  |  |
Zebra Technologies Corporation | Letter of Credit |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowing capacity from Credit Facility, as amended |  |  | $ 10,000,000 |  |  |  |
Avaya Networking | Revolving Loan Facility | Subsequent Event | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Interest rate, applicable margin | 3.25% |  |  |  |  |  |
Avaya Networking | Revolving Loan Facility | Subsequent Event | Adjusted Base Rate |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Interest rate, applicable margin | 1.25% |  |  |  |  |  |
Avaya Networking | Term Loan | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Borrowings under Term Loan | $ 80,000,000 |  |  |  |  |  |
Interest rate, floor | 0.00% |  |  |  |  |  |
Avaya Networking | Term Loan | Subsequent Event | London Interbank Offered Rate (LIBOR) |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Interest rate, applicable margin | 3.25% |  |  |  |  |  |
Avaya Networking | Term Loan | Subsequent Event | Adjusted Base Rate |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Interest rate, applicable margin | 1.25% |  |  |  |  |  |
Scenario, Forecast |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Gain on investments |  | $ 3,700,000 |  |  |  |  |
Maximum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Extended warranty period |  |  |  | 5 years |  |  |
Maximum | Second Amendment | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Additional incremental loan facility | $ 50,000,000 |  |  |  |  |  |
Maximum | Avaya Networking | Revolving Loan Facility | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Commitment fee | 0.50% |  |  |  |  |  |
Maximum | Purchased Software |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 4 years |  |  |
Maximum | Computer Equipment |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 4 years |  |  |
Maximum | Office Equipment |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 7 years |  |  |
Maximum | Leasehold Improvements |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 10 years |  |  |
Minimum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Extended warranty period |  |  |  | 1 year |  |  |
Minimum | Avaya Networking | Revolving Loan Facility | Subsequent Event |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Commitment fee | 0.375% |  |  |  |  |  |
Minimum | Purchased Software |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 1 year |  |  |
Minimum | Computer Equipment |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 1 year |  |  |
Minimum | Office Equipment |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 3 years |  |  |
Minimum | Leasehold Improvements |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Estimated useful lives of property and equipment |  |  |  | 2 years |  |  |
Cash equivalents | Maximum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity period for investments |  |  |  | 3 months |  |  |
Short-term Investments | Maximum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity period for investments |  |  |  | 1 year |  |  |
Short-term Investments | Minimum |  |  |  |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity period for investments |  |  |  | 3 months |  |  |

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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale. + References No definition available. + Details
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- Definition Period remaining on line of credit facility before it terminates, 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 Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition The cash inflow from bank borrowing during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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