000100 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 010000 - Statement - BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 010100 - Statement - BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 020000 - Statement - STATEMENTS OF OPERATIONS link:presentationLink link:calculationLink link:definitionLink 030000 - Statement - STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 040000 - Statement - STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 060100 - Disclosure - ORGANIZATION AND DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 060200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 060300 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 060400 - Disclosure - MARKETABLE SECURITIES link:presentationLink link:calculationLink link:definitionLink 060500 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 060600 - Disclosure - COMMON STOCK AND STOCK OPTIONS link:presentationLink link:calculationLink link:definitionLink 060700 - Disclosure - PROPERTY AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 060800 - Disclosure - OPERATING LEASE link:presentationLink link:calculationLink link:definitionLink 060900 - Disclosure - NET INCOME PER SHARE link:presentationLink link:calculationLink link:definitionLink 061000 - Disclosure - RELATED PARTY TRANSACTION link:presentationLink link:calculationLink link:definitionLink 061100 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 061200 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 061300 - Disclosure - SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING ACTIVITIES link:presentationLink link:calculationLink link:definitionLink 061400 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure link:presentationLink link:calculationLink link:definitionLink 061500 - Disclosure - Insider Trading Arrangements link:presentationLink link:calculationLink link:definitionLink 070200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 080300 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 080400 - Disclosure - MARKETABLE SECURITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 080500 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 080600 - Disclosure - COMMON STOCK AND STOCK OPTIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 080700 - Disclosure - PROPERTY AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 080900 - Disclosure - NET INCOME PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 081200 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 090200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 090202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 090204 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Revenue Recognition and Contract Balances (Details) link:presentationLink link:calculationLink link:definitionLink 090206 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Long-Lived Assets (Details) link:presentationLink link:calculationLink link:definitionLink 090208 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Lease Accounting (Details) link:presentationLink link:calculationLink link:definitionLink 090210 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Segment Information (Details) link:presentationLink link:calculationLink link:definitionLink 090212 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Concentrations of Credit Risk (Details) link:presentationLink link:calculationLink link:definitionLink 090300 - Disclosure - FAIR VALUE MEASUREMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 090400 - Disclosure - MARKETABLE SECURITIES, Cost and Fair Value of Marketable Securities (Details) link:presentationLink link:calculationLink link:definitionLink 090402 - Disclosure - MARKETABLE SECURITIES, Maturities of Marketable Securities (Details) link:presentationLink link:calculationLink link:definitionLink 090500 - Disclosure - INCOME TAXES, Income Tax (Benefit) Expense (Details) link:presentationLink link:calculationLink link:definitionLink 090502 - Disclosure - INCOME TAXES, Income Tax (Benefit) Expense (Details)1 link:presentationLink link:calculationLink link:definitionLink 090502 - Disclosure - INCOME TAXES, Income Tax Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 090504 - Disclosure - INCOME TAXES, Net Deferred Tax Assets (Liabilities) (Details) link:presentationLink link:calculationLink link:definitionLink 090600 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Common Stock, Preferred Stock and Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 090602 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 090604 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Summary of Stock-Based Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 090606 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Fair Value Assumptions Used in the Valuation of Stock Options (Details) link:presentationLink link:calculationLink link:definitionLink 090608 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Summary Information About Stock Options Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 090610 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Non-vested Options (Details) (Details) link:presentationLink link:calculationLink link:definitionLink 090612 - Disclosure - COMMON STOCK AND STOCK OPTIONS, Share Repurchase Program (Details) link:presentationLink link:calculationLink link:definitionLink 090700 - Disclosure - PROPERTY AND EQUIPMENT (Details) link:presentationLink link:calculationLink link:definitionLink 090800 - Disclosure - OPERATING LEASE (Details) link:presentationLink link:calculationLink link:definitionLink 090900 - Disclosure - NET INCOME PER SHARE (Details) link:presentationLink link:calculationLink link:definitionLink 091200 - Disclosure - SEGMENT REPORTING (Details) link:presentationLink link:calculationLink link:definitionLink 091300 - Disclosure - SUPPLEMENTAL DISCLOSURES OF NONCASH INVESTING ACTIVITIES (Details) link:presentationLink link:calculationLink link:definitionLink