0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED STATEMENT OF CASH FLOW link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - PROPERTY AND EQUIPMENT, NET link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - CREDIT FACILITY link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - NET LOSS PER SHARE FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON STOCKHOLDERS AND COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - SEGMENT REPORTING link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - DISCONTINUED OPERATIONS link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - PROPERTY AND EQUIPMENT, NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - NET LOSS PER SHARE FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON STOCKHOLDERS AND COMMON STOCK (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - SEGMENT REPORTING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - RESTRUCTURING (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - DISCONTINUED OPERATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of Estimated Useful Lives of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of of Contractual Liabilities and Revenue Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of of Contractual Liabilities and Revenue Recognized (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Cash Equivalents and Investments Accounted for as Available-for-Sale Measured at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Amortized Cost, Gross Unrealized Gains (Losses) and Fair Value of Available-for-sale Investments (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - LEASES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - LEASES - Schedule of Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - LEASES - Schedule of Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - LEASES - Schedule of Supplemental Cash Flows Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - LEASES - Schedule of Lease Components (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - PROPERTY AND EQUIPMENT, NET - Schedule of Estimated Useful Lives of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - PROPERTY AND EQUIPMENT, NET - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - CREDIT FACILITY (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - STOCK-BASED COMPENSATION - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Shares Available For Grant (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Restricted Stock Units Award Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Performance Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Black Scholes Option Pricing Model Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - INCOME TAXES - Schedule of Components of Income (Loss) Before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - INCOME TAXES - Schedule of Income Tax Provision (Benefit) (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - INCOME TAXES - Schedule of Reconciliation of Effective Tax Rate to the Statutory Federal Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - INCOME TAXES - Schedule of Components of Net Deferred Tax Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - INCOME TAXES - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - INCOME TAXES - Schedule of Cash Paid for Income Taxes, Net of Refunds Received (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - INCOME TAXES - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - INCOME TAXES - Schedule of Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - NET LOSS PER SHARE FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON STOCKHOLDERS AND COMMON STOCK - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - NET LOSS PER SHARE FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON STOCKHOLDERS AND COMMON STOCK - Schedule of Reconciliation of Numerator and Denominator Used in Calculation of Basic and Diluted EPS (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - NET LOSS PER SHARE FROM CONTINUING OPERATIONS ATTRIBUTABLE TO COMMON STOCKHOLDERS AND COMMON STOCK - Schedule of Common Stock Equivalents Excluded from Computation of Diluted Earnings (Loss) Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - SEGMENT REPORTING - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - SEGMENT REPORTING - Schedule of Segment Expenses (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - RESTRUCTURING - Schedule of Components of Restructuring Charges (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - RESTRUCTURING - Schedule of Restructuring Charges Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - DISCONTINUED OPERATIONS - Schedule of Discontinued Operations, Assets and Liabilities and Components of Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - DISCONTINUED OPERATIONS - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink