Document and Entity Information Entity Addresses [Table] Entity Addresses [Line Items] Document and Entity Information Document Type Document Period End Date Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Class of Stock [Axis] Class of Stock [Domain] Common Class A [Member] Common Class A Common Class B [Member] Common Class B Statement [Line Items] CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Assets [Abstract] ASSETS Assets, Current [Abstract] CURRENT ASSETS: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable, net Account receivable, net Inventory, Net Inventories, net Amount of advances to vendors that is expected to be rendered within one year or the normal operating cycle, if longer. Advances To Vendors, Current Advance to vendors Prepaid Expense and Other Assets, Current Prepayments and other current assets Assets, Current TOTAL CURRENT ASSETS Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Prepaid Expense, Noncurrent Long-term prepaid expenses, net Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Operating Lease, Right-of-Use Asset Operating lease right of use assets Operating lease right-of-use assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Finance lease asset Finance lease right of use assets, net Deferred Income Tax Assets, Net Deferred tax assets, net Assets, Noncurrent TOTAL NONCURRENT ASSETS Assets TOTAL ASSETS Liabilities and Equity [Abstract] LIABILITIES AND SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] CURRENT LIABILITIES: Short-Term Debt Convertible debt Total convertible notes and interest payable of convertible note Derivative Liability, Current Derivative liability Accounts Payable, Current Accounts payable Contract with Customer, Liability, Current Advance from customers Accrued Liabilities and Other Liabilities Accrued expenses and other liabilities Other Liabilities, Current Due to related parties Total Other Liability, Current, Related Party [Extensible Enumeration] Accrued Income Taxes, Current Taxes payable Operating Lease, Liability, Current Operating lease liabilities, current portion Operating lease liabilities, current Liabilities, Current TOTAL CURRENT LIABILITIES Loans Payable to Bank, Noncurrent Long-term bank loan Operating Lease, Liability, Noncurrent Operating lease liabilities, non-current portion Operating lease liabilities, non-current Liabilities, Noncurrent TOTAL NON-CURRENT LIABILITIES Liabilities TOTAL LIABILITIES Commitments and Contingencies COMMITMENTS AND CONTINGENCIES Equity, Attributable to Parent [Abstract] EQUITY: Common Stock, Value, Issued Ordinary shares Additional Paid in Capital Additional paid in capital Deferred Compensation Equity Deferred stock compensation Deferred stock compensation Stockholders' Equity Note, Subscriptions Receivable Subscription receivable Subscription receivable The amount of statutory reserve as of the balance sheet date. Statutory Reserve Statutory reserves Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Equity, Attributable to Parent TOTAL EQUITY ATTRIBUTEABLE TO NETCLASS' SHAREHOLDERS Equity, Attributable to Noncontrolling Interest Non-controlling interest Equity, Including Portion Attributable to Noncontrolling Interest Balance at end Balance at beginning TOTAL EQUITY Liabilities and Equity TOTAL LIABILITIES AND EQUITY Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Events Common Stock, Shares Authorized Ordinary shares, shares authorized (in shares) Common Stock, Par or Stated Value Per Share Ordinary shares, par value (in dollars per share) Common Stock, Shares, Issued Balance at end (in shares) Balance at beginning (in shares) Ordinary shares, shares issued (in shares) Common Stock, Shares, Outstanding Ordinary shares, shares outstanding (in shares) Stockholders' Equity Note, Stock Split, Conversion Ratio Reverse stock split, conversion ratio CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS Revenue from Contract with Customer, Excluding Assessed Tax Revenues Cost of Revenue Cost of revenues Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Selling and Marketing Expense Selling and marketing General and Administrative Expense General and administrative Research and Development Expense Research and development Operating Expenses Total operating expenses Operating Income (Loss) Loss from operations Nonoperating Income (Expense) [Abstract] Other (expense) income: Interest Income (Expense), Nonoperating Interest expense, net Business Combination, Bargain Purchase, Gain Recognized, Amount Gain on acquisition Gain on acquisition of a subsidiary Unrealized Gain (Loss) on Derivatives Gain on fair value change of derivative liability Other Nonoperating Income (Expense) Other expense, net Nonoperating Income (Expense) Total other (expense) income, net Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax benefit Total income tax benefit Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Net income (loss) Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Foreign currency translation adjustment Foreign currency translation adjustments Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Less: Comprehensive loss attributable to non-controlling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to shareholders Earnings Per Share [Abstract] Loss per share Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Weighted average number of shares outstanding Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Equity Components [Axis] Equity Component [Domain] Parent [Member] Shareholders' equity Common Stock [Member] Ordinary shares Additional Paid-in Capital [Member] Additional Paid-in Capital Receivables from Stockholder [Member] Subscription Receivable Deferred Compensation, Share-Based Payments [Member] Deferred Stock Compensation Represents statutory reserve. Statutory Reserve [Member] Deferred Statutory Reserve Retained Earnings [Member] Deficit AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Loss Noncontrolling Interest [Member] Noncontrolling Interest Sale of Stock [Axis] Sale of Stock [Domain] IPO [Member] IPO Private Placement [Member] Private placement Increase (Decrease) in Stockholders' Equity [Roll Forward] CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Stock Issued During Period, Value, New Issues Cash proceeds Stock Issued During Period, Shares, New Issues Cash proceeds (in shares) Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Offering cost deducted to capital Noncontrolling Interest, Increase from Business Combination Non-controlling interest from acquisition Stock Issued During Period, Value, Conversion of Convertible Securities Shares issued for partially conversion of convertible note Stock Issued During Period, Shares, Conversion of Convertible Securities Shares issued for partially conversion of convertible note (in shares) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Shares issued for compensation Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Shares issued for compensation (in shares) The amount of deferred stock compensation recognized during the period through amortization, reflecting a decrease in the deferred stock compensation balance and a reclassification within shareholders' equity. Deferred Compensation, Share Based Payment, Amortization Amortization of deferred stock compensation CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Property, Plant, and Equipment Acquisition of property, plant and equipment Payments to Acquire Intangible Assets Acquisition of intangible assets Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of property, plant and equipment Payments to Acquire Businesses, Gross Investment into a subsidiary Cash Acquired from Acquisition Cash from acquisition of a subsidiary Net Cash Provided by (Used in) Investing Activities Net cash (used in) provided by investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Proceeds from Bank Debt Proceeds from bank loans Proceeds from Issuance of Private Placement Gross proceeds from private placement Payments of Stock Issuance Costs Deferred issuance costs paid Proceeds from Issuance Initial Public Offering Gross proceeds from IPO Proceeds from Related Party Debt Proceeds from a related party loan Total Repayments of Related Party Debt Repayment to related parties Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Effect of exchange rates changes on cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Net (decrease) increase in cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Cash and restricted cash, end of the period Cash and restricted cash, beginning of the period Supplemental Cash Flow Information [Abstract] Supplemental cash flow disclosures: Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for interest Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non cash investing and financing activities: Def: Fair value of stock issued for long-term deferred expense in a non-cash or part of non-cash transactions. Shares Issued For Long-term Deferred Expense Shares issued for long-term deferred expenses ORGANIZATION AND BUSINESS DESCRIPTION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] ORGANIZATION AND BUSINESS DESCRIPTION SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ACCOUNTS RECEIVABLE, NET Accounts and Nontrade Receivable [Text Block] ACCOUNTS RECEIVABLE, NET No definition available. ADVANCE TO VENDORS. The entire disclosure for advances to vendors. Advance To Vendors [Text Block] ADVANCE TO VENDORS LONG-TERM PREPAID EXPENSES, NET The entire disclosure for amounts paid in advance for expenses which will be charged against earnings in periods after one year or beyond the operating cycle, if longer. Prepaid Expense, Noncurrent [Text Block] LONG-TERM PREPAID EXPENSES, NET PROPERTY AND EQUIPMENT, NET Property, Plant and Equipment Disclosure [Text Block] PROPERTY AND EQUIPMENT, NET INTANGIBLE ASSETS, NET Intangible Assets Disclosure [Text Block] INTANGIBLE ASSETS, NET RELATED PARTIES BALANCES AND TRANSACTIONS Related Party Transactions Disclosure [Text Block] RELATED PARTIES BALANCES AND TRANSACTIONS TAXES Income Tax Disclosure [Text Block] TAXES ACQUISITION OF NETCLASS JAPAN Business Combination [Text Block] ACQUISITION OF NETCLASS JAPAN LEASES The entire disclosure of information about leases. Lease Disclosure [Text Block] LEASES LONG-TERM BANK LOAN Disclosure of long-term bank loans. Long Term Bank Loan [Text Block] LONG-TERM BANK LOAN CONVERTIBLE NOTE Short-Term Debt [Text Block] CONVERTIBLE NOTE DERIVATIVE LIABILITY. Derivatives and Fair Value [Text Block] DERIVATIVE LIABILITY SHAREHOLDERS' EQUITY Equity [Text Block] SHAREHOLDERS' EQUITY EMPLOYEE STOCK OWNERSHIP PLAN Share-Based Payment Arrangement [Text Block] EMPLOYEE STOCK OWNERSHIP PLAN COMMITMENTS AND CONTINGENCIES. Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES SUBSEQUENT EVENTS Subsequent Events [Text Block] SUBSEQUENT EVENTS Basis of Accounting, Policy [Policy Text Block] Basis of consolidation Use of Estimates, Policy [Policy Text Block] Uses of estimates Consolidation, Policy [Policy Text Block] Principles of consolidation Disclosure of accounting policy for noncontrolling interest. Noncontrolling Interest, Policy [Policy Text Block] Non-controlling Interest Business Combination [Policy Text Block] Business Combinations Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Restricted cash Credit Loss, Financial Instrument [Policy Text Block] Credit Losses Receivable [Policy Text Block] Accounts Receivable, net Inventory, Policy [Policy Text Block] Inventories, net