00100 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS
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00200 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
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00300 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
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40301 - Disclosure - Goodwill and Other Intangibles - Goodwill (Details)
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40302 - Disclosure - Goodwill and Other Intangibles - Other intangible assets (Details)
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40401 - Disclosure - Long-Term Debt - Reconciliation (Details)
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404011 - Disclosure - Long-Term Debt - Reconciliation (Details) (Calc2)
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40402 - Disclosure - Long-Term Debt - Schedule of debt maturity (Details)
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40404 - Disclosure - Long-Term Debt - Other (Details)
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40701 - Disclosure - Leases - Components of lease expense (Details)
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40702 - Disclosure - Leases - Future minimum lease payments (Details)
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40705 - Disclosure - Leases - Future minimum lease payments (Details) (Calc2)
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40901 - Disclosure - Income Per Share - Calculation (Details)
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41002 - Disclosure - Share-Based Compensation - Activity (Details)
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41202 - Disclosure - Business Combinations - Purchase Price Allocation and Consideration (Details)
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41401 - Disclosure - Accrued Liabilities (Details)
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00090 - Document - Document and Entity Information
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00105 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)
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00400 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
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00405 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)
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10101 - Disclosure - Basis of Presentation
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10201 - Disclosure - Accounting Policies
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10301 - Disclosure - Goodwill and Other Intangibles
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10401 - Disclosure - Long-Term Debt
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10501 - Disclosure - Fair Value Measurements
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10601 - Disclosure - Segment Information
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10801 - Disclosure - Income Taxes
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10901 - Disclosure - Income Per Share
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11001 - Disclosure - Share-Based Compensation
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11101 - Disclosure - Share Repurchase Program
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11201 - Disclosure - Business Combinations
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11301 - Disclosure - Closure Costs
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11401 - Disclosure - Accrued Liabilities
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11501 - Disclosure - Other Commitments and Contingencies
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20202 - Disclosure - Accounting Policies (Policies)
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30203 - Disclosure - Accounting Policies (Tables)
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30303 - Disclosure - Goodwill and Other Intangibles (Tables)
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30403 - Disclosure - Long-Term Debt (Tables)
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30603 - Disclosure - Segment Information (Tables)
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30903 - Disclosure - Income Per Share (Tables)
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31003 - Disclosure - Share-Based Compensation (Tables)
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31103 - Disclosure - Share Repurchase Program (Tables)
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31203 - Disclosure - Business Combinations (Tables)
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31303 - Disclosure - Closure Costs (Tables)
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31403 - Disclosure - Accrued Liabilities (Tables)
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40101 - Disclosure - Basis of Presentation (Details)
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40201 - Disclosure - Accounting Policies - Share-Based Compensation (Details)
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40202 - Disclosure - Accounting Policies - Revenue Recognition (Details)
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40203 - Disclosure - Accounting Policies - ASC 842, Leases (Details)
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40403 - Disclosure - Long-Term Debt - Key Terms of Credit Agreement (Details)
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40501 - Disclosure - Fair Value Measurements (Details)
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40601 - Disclosure - Segment Information (Details)
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40801 - Disclosure - Income Taxes (Details)
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40902 - Disclosure - Income Per Share - Anti-dilutive common stock equivalents (Details)
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41001 - Disclosure - Share-Based Compensation - Expense (Details)
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41101 - Disclosure - Share Repurchase Program (Details)
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41201 - Disclosure - Business Combinations - Summary and Pro Forma (Details)
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41203 - Disclosure - Business Combinations - Intangibles (Details)
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41204 - Disclosure - Business Combinations - Goodwill (Details)
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41205 - Disclosure - Business Combinations - Contingent Consideration (Details)
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41301 - Disclosure - Closure Costs (Details)
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00305 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parentheticals)
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10701 - Disclosure - Leases
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30703 - Disclosure - Leases (Tables)
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40703 - Disclosure - Leases - Cash flows and other (Details)
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