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v2.4.1.9

Capital Leases and Other Obligations (Details Textual) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended | 1 Months Ended | 4 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Oct. 31, 2014 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |  |  |
Net gain on lease termination |  | $ 2,195 us-gaap_GainLossOnContractTermination |  |  |
Deferred Rent Credit Current |  | 2,845 zyxi_DecreaseInDeferredRentLiability |  |  |
Write-off rental units | 650 zyxi_WriteoffOfRentalUnits | 650 zyxi_WriteoffOfRentalUnits |  |  |
Annual rental expense |  | 1,158 us-gaap_OperatingLeasesRentExpenseNet | 1,716 us-gaap_OperatingLeasesRentExpenseNet |  |
Assembly equipment |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Cost of assets under capital lease |  | 461 us-gaap_CapitalLeasedAssetsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember |  |  | 461 us-gaap_CapitalLeasedAssetsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember
Accumulated depreciation |  | 105 us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember |  |  | 105 us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember
Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Imputed interest rate on lease |  | 18.00%zyxi_ImputedInterestRateOnCapitalLease / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
Minimum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Imputed interest rate on lease |  | 6.00%zyxi_ImputedInterestRateOnCapitalLease / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |
Revised from September 1, 2014 through December 31, 2014 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Lease Initiation Date |  | Oct. 31, 2014 |  |  |
Lease Commencement Date |  | Jan. 01, 2015 |  | Jan. 01, 2015 |
Lease term |  | 2 years |  | 2 years |
Fixed rental payments for each month |  | 49 zyxi_FixedRentalPaymentsForEachMonth / us-gaap_LeaseArrangementTypeAxis = zyxi_NewLeaseAgreementMember |  |  |
Lease agreement written notice to company, terms |  | 6 months |  |  |
Lease agreement written notice to landlord, terms |  | 3 months |  |  |
Revised from September 1, 2014 through December 31, 2014 | Maximum |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Lease termination date |  | Dec. 31, 2016 |  |  |
Terminating Lease Agreement |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Monthly rental payments |  |  |  |  | $ 43 zyxi_OperatingLeasesMonthlyRentalPayment / us-gaap_LeaseArrangementTypeAxis = zyxi_TerminatingLeaseAgreementMember
Lease Commencement Date |  | Sep. 01, 2014 |  |  |
Lease termination date |  | Dec. 31, 2014 |  |  |

X
- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 + Details
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X
- Definition The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 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 2) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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X
- Details
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X
- Definition Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
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X
- 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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X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Definition Decrease in deferred rent liability. + References No definition available. + Details
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- Definition Fixed rental payments for each month. + References No definition available. + Details
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- Definition Imputed interest rate on capital lease. + References No definition available. + Details
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- Definition Lease commencement date. + References No definition available. + Details
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- Definition Lease initiation date. + References No definition available. + Details
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- Definition Minimum period of written notice to landlord for termination agreement. + References No definition available. + Details
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- Definition Minimum period of written notice to termination agreement. + References No definition available. + Details
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- Definition Operating leases monthly rental payment. + References No definition available. + Details
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- Definition Writeoff of rental units. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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

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- Details
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