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Significant Accounting Policies (Details 7) (USD $) | 12 Months Ended |
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Dec. 31, 2011 bank | Dec. 31, 2011 Cash balances with financial institutions Credit concentration risk Minimum | Dec. 31, 2010 Annualized rental revenues Single tenant rental revenues
Concentration of Credit Risks |  |  |
Number of banks in which the entity maintains cash balances | 2 |  |
Uninsured deposit threshold amount |  | $ 250,000 |
Insurance limit provided by Federal Deposit Insurance Corporation | $ 250,000 |  |
Percentage of annualized rental revenues required for qualification as major tenant |  |  | 10.00%

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- Definition For an entity that discloses a concentration risk in relation to a quantitative amount, which serves as the "benchmark" in the equation, this concept represents the insurance limit provided by the Federal Deposit Insurance Corporation, for which deposits at a financial institution in excess of this amount are uninsured. + References No definition available. + Details
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- Definition Represents the number of banks in which the entity maintains cash balances. + References No definition available. + Details
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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
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- Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
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