000100 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 000200 - Statement - Consolidated Statements of Income And Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 000300 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 000400 - Statement - Consolidated Balance Sheets (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 000500 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 001000 - Disclosure - General link:presentationLink link:calculationLink link:definitionLink 002000 - Disclosure - Earnings Per Share link:presentationLink link:calculationLink link:definitionLink 003000 - Disclosure - Supplemental Cash Flow Information link:presentationLink link:calculationLink link:definitionLink 004000 - Disclosure - Financing Arrangements link:presentationLink link:calculationLink link:definitionLink 005000 - Disclosure - Reportable Segment Information link:presentationLink link:calculationLink link:definitionLink 006000 - Disclosure - Stock Based Compensation link:presentationLink link:calculationLink link:definitionLink 007000 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 008000 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 009000 - Disclosure - Recent Accounting Pronouncements link:presentationLink link:calculationLink link:definitionLink 992000 - Disclosure - Interest and Other Income link:presentationLink link:calculationLink link:definitionLink 993000 - Disclosure - Net income link:presentationLink link:calculationLink link:definitionLink 995000 - Disclosure - Accounts Receivable link:presentationLink link:calculationLink link:definitionLink 996000 - Disclosure - Property and Equipment link:presentationLink link:calculationLink link:definitionLink 997000 - Disclosure - Accrued Expenses link:presentationLink link:calculationLink link:definitionLink 910000 - Disclosure - Employee Benefit Plans link:presentationLink link:calculationLink link:definitionLink 911000 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 912000 - Disclosure - Related Party Transactions link:presentationLink link:calculationLink link:definitionLink 914000 - Disclosure - Quarterly Financial Data (Unaudited) link:presentationLink link:calculationLink link:definitionLink 917000 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 991500 - Disclosure - Change In Accounting Principle link:presentationLink link:calculationLink link:definitionLink