CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS [Abstract]
Tenant accounts receivable, allowance for doubtful accounts	$ 275	$ 327
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, shares authorized	10,000us-gaap_PreferredStockSharesAuthorized	10,000us-gaap_PreferredStockSharesAuthorized
Preferred shares, shares issued
Preferred shares, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000us-gaap_CommonStockSharesAuthorized	60,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	25,941us-gaap_CommonStockSharesIssued	25,850us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	25,941us-gaap_CommonStockSharesOutstanding	25,850us-gaap_CommonStockSharesOutstanding

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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- Definition

Face amount or stated value per share of common stock.

+ References

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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