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Organization, Nature of Business and Management's Plans (Details Textual) (USD $) | 12 Months Ended | 1 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Oct. 31, 2014 | Mar. 19, 2015
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Percentage of limited liability | 80.00%us-gaap_MinorityInterestOwnershipPercentageByParent |  |  |
Total net revenue | $ 11,117,000 us-gaap_SalesRevenueNet | $ 21,684,000 us-gaap_SalesRevenueNet |  |
Net (loss) income | (6,199,000)us-gaap_NetIncomeLoss | (7,301,000)us-gaap_NetIncomeLoss |  |
Line of credit current borrowing capacity | 0 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity |  |  |
Fixed expenses reduced by cutting annual employee costs through headcount reduction | 7,000,000 zyxi_EffectOfHeadcountReductionsOnEmployeeCosts |  |  |
Operating Leases Rent Expense Minimum Rentals | 129,000 us-gaap_OperatingLeasesRentExpenseMinimumRentals |  |  |
Line of Credit |  |  |  | 4,497,000 us-gaap_LineOfCredit
Current Lease Agreement |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Future monthly base rental payments | 43,000 zyxi_FutureMonthlyBaseRentalPayments / us-gaap_LeaseArrangementTypeAxis = zyxi_CurrentLeaseAgreementMember |  |  |
Lease agreement description | Under the terms of the termination agreement, among other things, the existing headquarters building lease terminated on December 31, 2014; the Company agreed to consolidate its operations into approximately one-third of the total square footage it occupied previously; monthly rental payments were reduced from approximately $129 to $43 for the period from September 1, 2014 through December 31, 2014 |  |  |
Revised from September 1, 2014 through December 31, 2014 |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Future monthly base rental payments |  |  | 49,000 zyxi_FutureMonthlyBaseRentalPayments / us-gaap_LeaseArrangementTypeAxis = zyxi_NewLeaseAgreementMember |
Lease term | 2 years |  | 2 years |
Lease Commencement Date | Jan. 01, 2015 |  | Jan. 01, 2015 |
Lease agreement description | the terms of the new lease took effect January 1, 2015. The terms of the new lease agreement include, among other things, a term of two years, fixed monthly base rental payments of approximately $49. The Company is monitoring the demand for its ZMI electrotherapy products and will make additional expense adjustments as necessary in future periods. |  |  |
Zynex Billing and Consulting, LLC |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Total net revenue | $ 411,000 us-gaap_SalesRevenueNet / dei_LegalEntityAxis = zyxi_ZynexBillingAndConsultingLimitedLiabilityCapitalMember | $ 262,000 us-gaap_SalesRevenueNet / dei_LegalEntityAxis = zyxi_ZynexBillingAndConsultingLimitedLiabilityCapitalMember |  |

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