Land and Development Costs and Subsurface Interests - Land Sales (Details)																	3 Months Ended									12 Months Ended
	Dec. 29, 2016 USD ($) a $ / a	Dec. 22, 2016 USD ($) a $ / a	Oct. 13, 2016 USD ($) a $ / a	Sep. 27, 2016 USD ($) a $ / a	Mar. 30, 2016 USD ($) a $ / a	Feb. 12, 2016 USD ($) a $ / a	Dec. 29, 2015 USD ($) a $ / a	Dec. 23, 2015 USD ($) a $ / a	Dec. 18, 2015 USD ($) a $ / a	Nov. 12, 2015 USD ($) a $ / a	Jun. 17, 2015 USD ($) a $ / a	Jun. 01, 2015 USD ($) a $ / a	Apr. 17, 2015 USD ($)	Oct. 30, 2014 USD ($) a $ / a	Aug. 15, 2014 USD ($) a $ / a	Feb. 18, 2014 USD ($) a $ / a	Dec. 31, 2016 USD ($) a	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) a	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2016 USD ($) a $ / a	Dec. 31, 2015 USD ($) a $ / a	Dec. 31, 2014 USD ($) a $ / a
Real Estate Properties [Line Items]
Revenues																	$ 27,635,543	$ 12,210,945	$ 12,873,938	$ 18,354,435	$ 19,783,432	$ 8,297,715	$ 7,608,208	$ 7,308,325		$ 71,074,861	$ 42,997,680	$ 36,056,637
Infrastructure Reimbursement Receivables																	3,844,236				1,306,602					3,844,236	1,306,602
Tanger Outlet [Member]
Real Estate Properties [Line Items]
Infrastructure Reimbursement Receivables																	1,750,000									1,750,000
Sam’s Club [Member]
Real Estate Properties [Line Items]
Infrastructure Reimbursement Receivables																	990,000									990,000
NADG - First Parcel [Member]
Real Estate Properties [Line Items]
Infrastructure Reimbursement Receivables																	$ 250,000									$ 250,000
Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																	235									235
Infrastructure Reimbursement Receivables																	$ 3,800,000									$ 3,800,000
Sold | 2016 Disposals
Real Estate Properties [Line Items]
Sales price																	$ 74,300,000									$ 74,300,000
Sold | 2016 Disposals | Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																	99									99
Sales price																	$ 21,400,000									$ 21,400,000
Sold | 2015 Disposals
Real Estate Properties [Line Items]
Sales price																					$ 24,300,000						$ 24,300,000
Gain Recognized													$ (497,000)										$ 13,000
Sold | 2015 Disposals | Integra Land Company [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																					15.0						15.0
Sold | 2015 Disposals | Sam’s Club [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																					18.1						18.1
Sold | 2015 Disposals | Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Sales price																					$ 19,400,000						$ 19,400,000
Sold | 2014 Disposals
Real Estate Properties [Line Items]
Gain Recognized																									$ (228,000)
Under contract to be sold | 2015 Disposals
Real Estate Properties [Line Items]
Gain Recognized																								$ (277,000)
Land [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																	9,800									9,800		99.7
Sales price																												$ 8,807,000
Sales price per acre | $ / a																												88,000
Gain Recognized																												$ 4,802,000
Land [Member] | Halifax Humane Society, Inc [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																3.1
Sales price																$ 392,000
Sales price per acre | $ / a																126,000
Gain Recognized																$ 347,000
Land [Member] | Distribution Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a															75.6
Sales price															$ 7,790,000
Sales price per acre | $ / a															103,000
Gain Recognized															$ 3,903,000
Land [Member] | Victor Indigo Lakes, L L C [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a														21.0
Sales price														$ 625,000
Sales price per acre | $ / a														30,000
Gain Recognized														$ 552,000
Land [Member] | Sold | 2016 Disposals
Real Estate Properties [Line Items]
Area of a real estate property | a																	707.7									707.7
Sales price																	$ 13,759,000									$ 13,759,000
Sales price per acre | $ / a																										19,000
Gain Recognized																										$ 8,304,000
Land [Member] | Sold | 2016 Disposals | Commercial
Real Estate Properties [Line Items]
Area of a real estate property | a		74.6	17.1			3.1
Sales price		$ 830,000	$ 3,034,000			$ 190,000
Sales price per acre | $ / a		11,000	177,000			61,000
Gain Recognized		$ 751,000	$ 2,675,000			$ 145,000
Land [Member] | Sold | 2016 Disposals | NADG - Out Parcel [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a					4.4
Sales price					$ 2,000,000
Sales price per acre | $ / a					455,000
Gain Recognized					$ 1,304,000
Land [Member] | Sold | 2016 Disposals | Minto Communities
Real Estate Properties [Line Items]
Area of a real estate property | a				4.5
Sales price				$ 205,000
Sales price per acre | $ / a				46,000
Gain Recognized				$ 126,000
Land [Member] | Sold | 2016 Disposals | ICI Homes
Real Estate Properties [Line Items]
Area of a real estate property | a	604.0
Sales price	$ 7,500,000
Sales price per acre | $ / a	12,000
Gain Recognized	$ 3,303,000
Land [Member] | Sold | 2015 Disposals
Real Estate Properties [Line Items]
Area of a real estate property | a																					114.10						114.10
Sales price																					$ 22,529,000						$ 22,529,000
Sales price per acre | $ / a																											197,000
Gain Recognized																											$ 8,477,000
Land [Member] | Sold | 2015 Disposals | Commercial
Real Estate Properties [Line Items]
Area of a real estate property | a							0.90				0.90	3.00
Sales price							$ 30,000				$ 250,000	$ 505,000
Sales price per acre | $ / a							33,000				278,000	168,000
Gain Recognized							$ 20,000				$ 223,000	$ 476,000
Land [Member] | Sold | 2015 Disposals | Tanger Outlet [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a										38.90
Sales price										$ 9,700,000
Sales price per acre | $ / a										249,000
Gain Recognized										$ 2,793,000
Land [Member] | Sold | 2015 Disposals | Integra Land Company [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a									15.00
Sales price									$ 2,376,000
Sales price per acre | $ / a									158,000
Gain Recognized									$ 2,265,000
Land [Member] | Sold | 2015 Disposals | Sam’s Club [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a								18.10
Sales price								$ 4,500,000
Sales price per acre | $ / a								249,000
Gain Recognized								$ 1,279,000
Land [Member] | Sold | 2015 Disposals | NADG - First Parcel [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a							37.30
Sales price							$ 5,168,000
Sales price per acre | $ / a							139,000
Gain Recognized							$ 1,421,000
Land [Member] | Sold | 2015 Disposals | Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																					94.30						94.30
Developable Land | Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																	180									180
Developable Land | Under contract to be sold | 2016 Disposals | Tomoka Town Center [Member]
Real Estate Properties [Line Items]
Area of a real estate property | a																	82									82
Tomoka Town Center [Member] | Sold | 2015 Disposals
Real Estate Properties [Line Items]
Sales price																					$ 19,400,000						$ 19,400,000