Debt (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Long-term debt maturities
2015	$ 314,000
2016	340,000
2017	368,000
2018	398,000
2019	427,000
Total long-term debt	1,847,000us-gaap_LongTermDebt
Less current portion	314,000us-gaap_LongTermDebtCurrent	290,000us-gaap_LongTermDebtCurrent
Total (less current maturities)	1,533,000us-gaap_LongTermDebtNoncurrent	1,847,000us-gaap_LongTermDebtNoncurrent
Mortgage Payable
Debt
Mortgage payable outstanding	1,800,000	2,100,000
Land and buildings	3,300,000	4,700,000
Number of buildings held for sale	1
Annual interest rate on mortgage (as a percent)	7.91%	7.91%
Mortgage Payable \| Level 3
Debt
Fair value of debt instrument	$ 2,000,000	$ 2,300,000

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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The carrying amount of real estate held for productive use and long lived structures used in the conduct of business, including office, production, storage, building improvements and distribution facilities.

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The number of buildings held for sale by the entity.

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