Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Gross amount of debt extinguished.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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This element represents the current and noncurrent portions of a long-term real estate loan with an initial maturity beyond one year or beyond the normal operating cycle, if longer, to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project (generally one to seven years), usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property.

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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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Capital and Financing Transactions - Mortgage Notes Payable (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 05, 2015	Mar. 23, 2015
Debt Instrument [Line Items]
Gain on extinguishment of debt	$ 79,000	$ 0
Long-term construction loan	2,600,000
Mortgages
Debt Instrument [Line Items]
Modified mortgage loan	1,300,000,000
Unamortized premium on debt acquired	24,800,000
Effective interest rate on notes payable	4.37%
Westshore Corporate Center \| Mortgages
Debt Instrument [Line Items]
Amount of debt extinguishment			14,000,000
Gain on extinguishment of debt			79,000
Parkway Properties Office Fund II, LP \| Hayden Ferry Lakeside III
Debt Instrument [Line Items]
Long-term construction loan				$ 2,100,000