CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash Flows from Operating Activities:
Net income (loss)	$ 202,326	$ 126,719	$ (23,520)
Adjustments to reconcile net income (loss) to cash used in operating activities:
Depreciation	81,878	82,275	50,683
Amortization	13,986	16,722	5,275
Amortization of deferred financing costs	6,977	5,734	4,378
Amortization of intangibles other than in-place leases	(1,857)	462	668
Straight-line rent amortization	(7,401)	(4,985)
Deferred income taxes	113,698	21,152	65,010
Restricted stock and stock option amortization	6,707	7,284	8,200
Gain on disposition of assets	(139,432)	(29,073)	(2,373)
Gain on acquisition of partner's interest in Millennium Six Pines Apartments	(27,088)
Warrant liability (gain) loss	24,410	(58,320)	60,520
Equity in earnings from Real Estate and Other Affiliates, net of distributions	(19,329)	1,182	11,222
Provision for doubtful accounts	5,664	4,030	1,404
Master Planned Community land acquisitions	(94)	(7,293)	(100,913)
Master Planned Community development expenditures	(149,592)	(197,020)	(140,735)
Master Planned Community cost of sales	88,065	69,104	110,885
Condominium development expenditures	(330,720)	(191,313)	(75,990)
Condominium rights and unit cost of sales	319,325	191,606	49,995
Provision for impairment	35,734
Deferred rental income		46,366
Reduction (increase) in tax indemnity receivable			(90)
Interest income related to tax indemnity			(21,510)
Loss on settlement of tax indemnity receivable			(74,095)
Proceeds received on settlement of tax indemnity receivable			138,000
Payment to IRS relating to tax court decision			(203,298)
Percentage of completion revenue recognition from sale of condominium rights and unit sales	(485,634)	(305,284)	(83,565)
Non-monetary consideration relating to land sale			(17,406)
Net changes:
Accounts and notes receivable	29,295	50,228	45,209
Prepaid expenses and other assets	2,763	(1,869)	(6,311)
Condominium deposits received	465,701	81,881	139,187
Deferred expenses	(8,911)	(11,743)	(36,641)
Accounts payable and accrued expenses	(46,322)	29,867	37,213
Condominium deposits held in escrow	(465,701)	(81,881)	(139,187)
Condominium deposits released from escrow	348,745	177,724
Other, net	(4,278)	375	(8,720)
Cash provided by (used in) operating activities	58,915	23,930	(58,315)
Cash Flows from Investing Activities:
Property and equipment expenditures	(9,662)	(15,439)	(8,521)
Operating property improvements	(20,247)	(8,409)	(6,299)
Property developments and redevelopments	(402,669)	(578,506)	(759,003)
Proceeds from grant to reimburse development costs	4,582
Proceeds from dispositions	410,917	25,139	11,953
Proceeds from insurance claims	3,107		12,901
Investment in KR Holdings, LLC		9,121	9,386
Acquisition of partner's interest in Millennium Six Pines Apartments (net of cash acquired)	(3,105)
Acquisition of partner's interest			(21,555)
Acquisition of One Mall North	(22,375)
Distributions from Real Estate and Other Affiliates	16,550
Note issued to Real Estate Affiliate	(25,000)
Proceeds from repayment of note to Real Estate Affiliate	25,000
Investments in Real Estate and Other Affiliates, net	(11,056)	(2,171)	(6,248)
Change in restricted cash	(4,605)	(6,580)	20,930
Other		1,277
Cash used in investing activities	(38,563)	(575,568)	(746,456)
Cash Flows from Financing Activities:
Proceeds from mortgages, notes and loans payable	535,505	583,822	597,553
Principal payments on mortgages, notes and loans payable	(333,302)	(103,808)	(120,182)
Preferred dividend payment on behalf of REIT subsidiary			(12)
Special Improvement District bond funds released from (held in) escrow	11,236	(39,241)
Deferred financing costs	(5,531)	(4,285)	(7,085)
Issuance of management warrants	1,000
Taxes paid on vested restricted stock	(1,231)
Stock options exercised	180
Acquisition of 1% partnership interest in GG Dr, LLC	(8,000)
Cash provided by financing activities	199,857	436,488	470,274
Net change in cash and cash equivalents	220,209	(115,150)	(334,497)
Cash and cash equivalents at beginning of period	445,301	560,451	894,948
Cash and cash equivalents at end of period	665,510	445,301	560,451
Supplemental Disclosure of Cash Flow Information:
Interest paid	123,687	99,296	84,497
Interest capitalized	64,344	47,221	46,513
Income taxes paid	11,191	3,318	204,898
Non-Cash Transactions:
Special Improvement District bond transfers associated with land sales	7,662	18,775	8,786
Property developments and redevelopments		2,530	38,567
Accrued interest on construction loan borrowing	4,386	2,863	4,785
MPC Land contributed to Real Estate Affiliate		15,234
Special Improvement District bond transfer to Real Estate Affiliate		(1,518)
Capitalized stock compensation	2,559	$ 2,526
Distribution of land to noncontrolling interests			2,818
Millennium Six Pines Apartments
Acquisition/Donation of Property:
Land	(11,225)
Building	(54,492)
Other assets	(1,261)
Mortgages, notes and loans payable	37,700
Other liabilities	(913)
1701 Lake Robbins
Acquisition/Donation of Property:
Land			(1,663)
Building			(3,725)
Other assets			(848)
Mortgages, notes and loans payable			4,600
Other liabilities			152
10-60 Columbia Corporate Center
Acquisition/Donation of Property:
Land			(23,404)
Building			(79,247)
Other assets			(28,997)
Other liabilities			1,648
85 South Street
Acquisition/Donation of Property:
Building			(3,979)
Below market lease obligation			$ 3,979
Merriweather Post Pavilion Donation
Acquisition/Donation of Property:
Mortgages, notes and loans payable	(2,834)
Other liabilities	(4,635)
Developments	18,066
Prepaid and other assets	$ (10,597)