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[Member] Daniel Gerritzen International Non-US [Member] Foreign currency translation impact Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Purchase obligation, to be paid, remainder of fiscal year Purchase Obligation, to be Paid, Remainder of Fiscal Year Business combination, anniversary payments, subsequent payment Business Combination, Consideration Transferred, Anniversary Payments, Subsequent Payment Business Combination, Consideration Transferred, Anniversary Payments, Subsequent Payment Total liabilities and stockholders' equity Liabilities and Equity Shares authorized in lieu of cash, value Shares Authorized For Issuance in Lieu of Cash, Value Shares Authorized For Issuance in Lieu of Cash, Value Employee Stock Option Share-Based Payment Arrangement, Option [Member] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Segment 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shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and Administrative Expense Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Business combination, anniversary payments Business Combination, Consideration Transferred, Anniversary Payments Business Combination, Consideration Transferred, Anniversary Payments Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash consideration Payments to Acquire Productive Assets Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Supplier Supplier [Member] Supplier Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Name Measure Name INCOME TAXES Income Tax Disclosure [Text Block] Accounts payable - trade Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Debt instrument, exit fee (as a percent) Debt Instrument, Exit Fee, Percent Debt Instrument, Exit Fee, Percent Business combination, consideration transferred Business Combination, Consideration Transferred Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category SUPPLEMENTAL DISCLOSURES Supplemental Cash Flow Elements [Abstract] Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Other acquisitions, including clinics, net of cash acquired Payments to Acquire Business Two, Net of Cash Acquired Short-term investments Short-Term Investments Name Trading Arrangement, Individual Name Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Cash Cash and Cash Equivalent Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Greg Odle [Member] Greg Odle Number of subsidiaries Number Of Subsidiaries Number Of Subsidiaries Intellectual Property & Capitalized Software Intellectual Property And Capitalized Software [Member] Intellectual Property And Capitalized Software Number of related party suppliers Number Of Related Party Entities Suppliers Number Of Related Party Entities Suppliers 4.75% Convertible Senior Notes 4.75% Convertible Senior Notes [Member] 4.75% Convertible Senior Notes Aggregate value of equity consideration Asset Acquisition, Equity Interest Issued or Issuable, Value Aggregate Value Asset Acquisition, 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Block]