XML 68 R49.htm IDEA: XBRL DOCUMENT 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		$ 2,195us-gaap_GainLossOnContractTermination
Deferred Rent Credit Current		2,845zyxi_DecreaseInDeferredRentLiability
Write-off rental units	650zyxi_WriteoffOfRentalUnits	650zyxi_WriteoffOfRentalUnits
Annual rental expense		1,158us-gaap_OperatingLeasesRentExpenseNet	1,716us-gaap_OperatingLeasesRentExpenseNet
Assembly equipment
Debt Instrument [Line Items]
Cost of assets under capital lease		461us-gaap_CapitalLeasedAssetsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember			461us-gaap_CapitalLeasedAssetsGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember
Accumulated depreciation		105us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentMember			105us-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		49zyxi_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					$ 43zyxi_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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

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

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Decrease in deferred rent liability.

+ References

No definition available.

+ Details

Name:	zyxi_DecreaseInDeferredRentLiability
Namespace Prefix:	zyxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fixed rental payments for each month.

+ References

No definition available.

+ Details

Name:	zyxi_FixedRentalPaymentsForEachMonth
Namespace Prefix:	zyxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Imputed interest rate on capital lease.

+ References

No definition available.

+ Details

Name:	zyxi_ImputedInterestRateOnCapitalLease
Namespace Prefix:	zyxi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lease commencement date.

+ References

No definition available.

+ Details

Name:	zyxi_LeaseCommencementDate
Namespace Prefix:	zyxi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lease initiation date.

+ References

No definition available.

+ Details

Name:	zyxi_LeaseInitiationDate
Namespace Prefix:	zyxi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum period of written notice to landlord for termination agreement.

+ References

No definition available.

+ Details

Name:	zyxi_MinimumPeriodOfWrittenNoticeToLandlordForTerminationAgreement
Namespace Prefix:	zyxi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Minimum period of written notice to termination agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	zyxi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Operating leases monthly rental payment.

+ References

No definition available.

+ Details

Name:	zyxi_OperatingLeasesMonthlyRentalPayment
Namespace Prefix:	zyxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Writeoff of rental units.

+ References

No definition available.

+ Details

Name:	zyxi_WriteoffOfRentalUnits
Namespace Prefix:	zyxi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=zyxi_NewLeaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: