Summary of Significant Accounting Policies - Recently Issued Accounting Standards and Reclassifications (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($) a	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) a	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) a	Feb. 10, 2017 a	Jan. 01, 2016 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Land and Development Costs	$ 51,955,278				$ 53,406,020				$ 51,955,278	$ 53,406,020
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
Direct costs of revenues	13,081,483	4,043,639	3,828,511	4,886,387	5,874,273	2,721,326	2,488,167	2,684,332	25,840,020	13,768,098	12,536,870
Net income	$ 5,095,073	$ 8,161,014	$ 1,570,443	$ 1,424,718	$ 5,689,322	$ 2,079,871	$ 224,617	$ 353,356	$ 16,251,248	$ 8,347,166	$ 6,383,818
ASU 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unamortized debt issuance costs													$ 1,700,000
Subsequent Event [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Area of a real estate property | a												2,210
Land [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Area of a real estate property | a	9,800								9,800		99.7
Land [Member] | Subsequent Event [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Area of a real estate property | a												8,200