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Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 2202201 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 2403401 - Disclosure - Significant Accounting Policies - Recently Adopted Accounting Standards (Details) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2404402 - Disclosure - Significant Accounting Policies - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 2105102 - Disclosure - Nature of Operations link:presentationLink link:calculationLink link:definitionLink 2406403 - Disclosure - Nature of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 2107103 - Disclosure - Revenue link:presentationLink link:calculationLink link:definitionLink 2308301 - 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Disclosure - Fixed Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 2431418 - Disclosure - Fixed Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2132108 - Disclosure - Borrowing Arrangements link:presentationLink link:calculationLink link:definitionLink 2333306 - Disclosure - Borrowing Arrangements (Tables) link:presentationLink link:calculationLink link:definitionLink 2434419 - Disclosure - Borrowing Arrangements - Bank Line of Credit (Details) link:presentationLink link:calculationLink link:definitionLink 2435420 - Disclosure - Borrowing Arrangements - Term Loan Credit Facility (Details) link:presentationLink link:calculationLink link:definitionLink 2436421 - Disclosure - Borrowing Arrangements - Annual Principal Payments (Details) link:presentationLink link:calculationLink link:definitionLink 2137109 - Disclosure - Postretirement Benefits link:presentationLink link:calculationLink link:definitionLink 2338307 - Disclosure - 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Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink