100000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 100010 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 100020 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100030 - Statement - Consolidated Statements of Income and Retained Earnings 2 link:presentationLink link:calculationLink link:definitionLink 100040 - Statement - Consolidated Statements of Income and Retained Earnings link:presentationLink link:calculationLink link:definitionLink 100050 - Statement - Consolidated Statements of Income and Retained Earnings (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100060 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 100070 - Disclosure - Description of business link:presentationLink link:calculationLink link:definitionLink 100080 - Disclosure - Summary of significant accounting policies link:presentationLink link:calculationLink link:definitionLink 100090 - Disclosure - Properties and equipment link:presentationLink link:calculationLink link:definitionLink 100100 - Disclosure - Liabilities, other link:presentationLink link:calculationLink link:definitionLink 100110 - Disclosure - Notes Payable link:presentationLink link:calculationLink link:definitionLink 100120 - Disclosure - Description of leasing arrangements link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - Income taxes, continuing operations link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - Discontinued operations and environmental incident link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - Subsequent event link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - Summary of significant accounting policies (Policies) link:presentationLink link:calculationLink link:definitionLink 100170 - Disclosure - Properties and equipment (Tables) link:presentationLink link:calculationLink link:definitionLink 100180 - Disclosure - Liabilities, other (Tables) link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - Description of leasing arrangements (Tables) link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - Income taxes, continuing operations (Tables) link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - Properties and Equipment - Properties and Equipment (Detail) link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - Liabilities, Other - Summary of Liabilities, Other (Detail) link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - Note Payable - Revolving Credit Line - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - Description of Leasing Arrangements - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100260 - Disclosure - Description of Leasing Arrangements - Minimum Future Contractual Rental Payments to be Received (Detail) link:presentationLink link:calculationLink link:definitionLink 100270 - Disclosure - Description of Leasing Arrangements - Company's Revenue from Major Tenants (Detail) link:presentationLink link:calculationLink link:definitionLink 100280 - Disclosure - Income Taxes, Continuing Operations - Summary of Income Tax Expense from Continuing Operations (Details) link:presentationLink link:calculationLink link:definitionLink 100290 - Disclosure - Income Taxes, Continuing Operations - Reconciliation of Income Tax Provision from Continuing Operations (Detail) link:presentationLink link:calculationLink link:definitionLink 100300 - Disclosure - Income Taxes, Continuing Operations - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100310 - Disclosure - Income Taxes, Continuing Operations - Deferred Tax Assets and Liabilities (Detail) link:presentationLink link:calculationLink link:definitionLink 100320 - Disclosure - Discontinued Operations and Environmental Incident - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - Subsequent Event - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink