NET INCOME PER COMMON SHARE - Potentially Dilutive Securities Excluded from Computation of Net Income Per Common Share (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Schedule of Earning Per Share, Basic, by Common Class [Line Items]
Antidilutive convertible preferred shares (in shares)	16,539	[1]	16,493	[1]	16,184	[1]
Shares issuable under option awards (in shares)	30		10		40
Restricted stock units (in shares)	243		0		0
7.50% Cumulative Redeemable Preferred Stock, Series E [Member]
Schedule of Earning Per Share, Basic, by Common Class [Line Items]
Preferred stock dividend rate (in hundredths)	7.50%
Redeemable Preferred Stock [Member] | 7.50% Cumulative Redeemable Preferred Stock, Series E [Member]
Schedule of Earning Per Share, Basic, by Common Class [Line Items]
Preferred stock dividend rate (in hundredths)	7.50%

[1] The Series A and Series B preferred shares were redeemed on June 13, 2013 (See NOTE 11).