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Subsequent Events (Details Textual) (USD $)
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1 Months Ended | 12 Months Ended | ||
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Jan. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Subsequent Events (Additional Textual) [Abstract] | ||||
| Lease expiration date | Dec. 31, 2013 | |||
| Subsequent Events (Textual) [Abstract] | ||||
| Extended additional period of lease | 11 years | |||
| Annualized straight line rents | $ 1,400,000 | |||
| Leasing commission paid | 1,738,000 | 6,000 | 7,000 | |
| Common shares issued | 129,278 | |||
| Gross proceeds from common shares issued | $ 2,400,000 | $ 3,917,000 | $ 37,294,000 | $ 3,882,000 |
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Baytown, Texas Office Building [Member]
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| Subsequent Events (Additional Textual) [Abstract] | ||||
| Lease expiration date | Apr. 30, 2013 | |||
| X | ||||||||||
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- Definition
Annualized straight line rent escalations. No definition available.
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- Definition
Extended additional period of lease. No definition available.
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- Details
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- Details
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- Definition
Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available.
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- Definition
Amount of cash outflow for lease commissions incurred. No definition available.
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- Definition
Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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