Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 47,380,476	$ 104,692,318
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	758,577	700,357
Impairment charges	2,100,000
Bad debt expense	30,000	18,000
Net periodic pension benefit cost (income)	264,442	(3,467)
Deferred income taxes	(61,649,000)	61,649,000
Decrease (increase) in assets:
Rent receivable	34,812	(35,622)
Deferred rent receivable	6,681	(62,435)
Prepaid expenses and other assets	(149,923)	(67,327)
Increase (decrease) in liabilities:
Accounts payable	1,911,545	283,405
Accrued liabilities	5,027,148	46,351
Deferred rent liability	55,372	(1,180)
Tenant security deposits	3,932	(20,539)
Total adjustments	(51,606,414)	62,506,543
Net cash (used in) provided by operating activities	(4,225,938)	167,198,861
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of building improvements and equipment	(499,983)	(311,461)
Land development costs	(80,751)	(81,642)
Purchases of marketable securities		(5,350,518)
Principal repayments of investments in marketable securities	865,941	526,159
Net cash provided by (used in) investing activities	285,207	(5,217,462)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on mortgage loans payable	(5,013,415)	(461,466)
Loan origination fees paid		(2,471)
Other equity transactions, net		6,436
Net cash used in financing activities	(5,013,415)	(457,501)
Net (decrease) increase in cash and cash equivalents	(8,954,146)	161,523,898
Cash and cash equivalents at beginning of period	94,164,722	10,375,994
Cash and cash equivalents at end of period	85,210,576	171,899,892
Supplemental cash flow information:
Interest paid	26,637	770,028
Income and excise taxes paid	3,466,878
Non-cash investing and financing activities
Dividends payable	$ 98,685,000