Equity (Tables)

12 Months Ended

Dec. 31, 2011

Class of Stock [Line Items]

Schedule of Stock by Class, Preferred Stock

The following table sets forth our Preferred Stock:

Preferred Stock Issuances	Issue Date	Number of Shares Outstanding	Carrying Value		Liquidation Preference Per Share		Optional Redemption Date	Annual Dividends Payable Per Share
		(in thousands)
December 31, 2011
8.625% Series A Cumulative Redeemable	2/12/1997	29	$	29,077	$	1,000	2/12/2027	$	86.25
December 31, 2010
8.625% Series A Cumulative Redeemable	2/12/1997	29	$	29,092	$	1,000	2/12/2027	$	86.25
8.000% Series B Cumulative Redeemable	9/25/1997	2,100	$	52,500	$	25	9/25/2002	$	2.00

Our officers generally receive annual grants of stock options and restricted stock on or about March 1 of each year. Restricted stock grants are also made annually to directors and certain other employees. Dividends received on restricted stock are non-forfeitable and are paid at the same rate and on the same date as on shares of Common Stock. Dividends paid on subsequently forfeited shares are expensed. Additional total return-based restricted stock may be issued at the end of the three-year periods if actual performance exceeds certain levels of performance. Such additional shares, if any, would be fully vested when issued. No expense is recorded for additional shares of total return-based restricted stock that may be issued at the end of the three-year period since that possibility is already reflected in the grant date fair value. The following table sets forth the number of shares of Common Stock reserved for future issuance:

	December 31,
	2011	2010
Outstanding stock options and warrants	1,224,455	1,495,196
Possible future issuance under equity incentive plans	2,363,695	2,642,620
	3,588,150	4,137,816

Common Stock [Member]

Class of Stock [Line Items]

Schedule of Dividends Payable

The following table sets forth the estimated taxability to the common stockholders of dividends per share for federal income tax purposes:

	Year Ended December 31,
	2011		2010		2009
Ordinary income	$	1.15	$	0.41	$	1.09
Capital gains	—		0.44		0.60
Return of capital	0.55		0.85		0.01
Total	$	1.70	$	1.70	$	1.70

Preferred Stock [Member]

Class of Stock [Line Items]

Schedule of Dividends Payable

The following table sets forth the estimated taxability to the preferred stockholders of dividends per share for federal income tax purposes:

	Year Ended December 31,
	2011		2010		2009
8.625% Series A Cumulative Redeemable:
Ordinary income	$	86.25	$	41.80	$	55.86
Capital gains	—		44.45		30.39
Total	$	86.25	$	86.25	$	86.25
8.000% Series B Cumulative Redeemable:
Ordinary income	$	1.05	$	0.97	$	1.30
Capital gains	—		1.03		0.70
Total	$	1.05	$	2.00	$	2.00