CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 4,366	$ 5,565
Accounts receivable, net	2,668	2,185
Inventory, net	710	423
Prepaid expenses and other assets	615	198
Total current assets	8,359	8,371
Property and equipment, net	575	188
Deposits	375	370
Total assets	9,309	8,929
Current liabilities:
Current portion of unsecured subordinated promissory notes	7	231
Current portion of capital leases	93	123
Accounts payable and accrued expenses	2,112	2,243
Accrued payroll and related taxes	661	538
Deferred insurance reimbursement	880	880
Total current liabilities	3,753	4,015
Long-term liabilities:
Deferred rent	329	0
Warranty liability	12	12
Total liabilities	4,094	4,027
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued and outstanding as of March 31, 2018 and December 31, 2017	0	0
Common stock, $0.001 par value; 100,000,000 shares authorized; 33,101,834 issued and 32,606,743 outstanding as of March 31, 2018 and 32,864,877 issued and 32,778,040 outstanding as of December 31, 2017	33	33
Additional paid-in capital	7,761	7,612
Treasury stock 495,091 and 86,837 shares, at March 31, 2018 and December 31, 2017, respectively, at cost	(2,000)	(243)
Accumulated deficit	(490)	(2,411)
Total Zynex, Inc. stockholders' equity	5,304	4,991
Non-controlling interest	(89)	(89)
Total stockholders' equity	5,215	4,902
Total liabilities and stockholders' equity	$ 9,309	$ 8,929

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.