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EMPLOYEE SHARE PURCHASE AND DEFERRED SHARE PLAN (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee share purchase discount rate (in percent)	15.00%
Employee share purchase maximum purchase amount	$ 25,000
Employee share purchase compensation expense	10,000	20,000	20,000
Trustee [Member] | Deferred Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement compensation expense	$ 60,000	$ 60,000	$ 50,000
Deferred compensation arrangement shares issued (in shares)			14,722
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee share purchase (in shares)	4,886	6,184	8,744

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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