EARNINGS PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 Common Stock [Member]	Mar. 31, 2012 Operating Partnership, as General Partner or Managing Member [Member]	Dec. 31, 2011 Operating Partnership, as General Partner or Managing Member [Member]	Mar. 31, 2012 Operating Partnership, as General Partner or Managing Member [Member] Series A Preferred Stock [Member]	Dec. 31, 2011 Operating Partnership, as General Partner or Managing Member [Member] Series A Preferred Stock [Member]
Numerator:
Income from continuing operations	$ 4,010	$ 8,185
Less: net income attributable to participating securities	84	256
Income from continuing operations net of income attributable to participating securities	3,926	7,929
Effect of dilutive securities:
Preferred OP Unit distributions	0	4
Numerator for diluted earnings per Common Share	$ 3,926	$ 7,933
Denominator
Weighted average shares for basic earnings per share (in shares)	42,736,000	40,318,000
Effect of dilutive securities:
Employee Restricted Share Units and share options (in shares)	43,000	21,000
Convertible Preferred OP Units (in shares)	0	25,000
Dilutive potential Common Shares (in shares)	43,000	46,000
Denominatior for diluted earnings per share (in shares)	42,779,000	40,364,000
Basic earnings per Common Share from continuing operations attributable to Common shareholders (in dollars per share)	$ 0.09	$ 0.20
Diluted earnings per Common Share from continuing operations attributable to Common Shareholders (in dollars per share)	$ 0.09	$ 0.20
Series A Preferred OP Units (in shares)				384,991	279,748	188	188
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)			25,067