Related Party Arrangements (Details Narrative) - USD ($)				12 Months Ended
	Apr. 29, 2016	Aug. 21, 2015	Aug. 15, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2015	Sep. 22, 2015
Total offering costs under DRIP				$ 124,000
Percentage of acquisition fee (in percent)				1.50%
Percentage of origination fee in lieu of acquisition (in percent)				1.50%
Debt financing fee percentage				1.00%
Advisor expense reimbursement - alternative 1				2.00%
Advisor expense reimbursement - alternative 2				25.00%
Operating expenses				$ 4,031,112
Operating expenses not reimbursable				5,293,044
Property management fees				1,776,468		$ 1,532,740
Accounting fees paid				340,000		287,500
Origination of note receivable from related party				4,500,000		9,000,000
Interest income from related party				1,558,000		479,300
The Company [Member]
Operating expenses				2,799,289
Moody National Realty Company LP [Member]
Receivable from realty							$ 1,000,000
Related Party Note [Member]
Origination of note receivable from related party		$ 9,000,000
Notes receivable accrues fixed rate (in percent)		12.00%
Notes receivable origination fee		$ 90,000	$ 90,000
Notes receivable exit fee		$ 90,000	90,000
Extension fee			$ 45,000
Mezzanine Note Receivable [Member]
Origination of note receivable from related party	$ 4,500,000
Notes receivable accrues fixed rate (in percent)	10.00%
Notes receivable origination fee	$ 45,000
Notes receivable exit fee	$ 45,000
Acquisitions in 2016 - Houston Hotel [Member]
Acquisition fee				120,000
Debt financing fee				48,000
Acquisitions in 2015 - Great Valley Hotel and Nashville Hotel [Member]
Acquisition fee					$ 1,476,750	1,476,750
Acquisitions in 2015 - Great Valley Hotel, Nashvillel Hotel and Woodlands Hotel [Member]
Debt financing fee					$ 787,000
Moody Securities [Member] \| Follow On Offering [Member]
Selling commission				8,646,755
Dealer manager fees				$ 2,455,643
Moody Securities [Member] \| Initial Public Offering [Member]
Percentage of selling commisssion on gross offering (in percent)				6.50%
Percentage of dealer manager fees on gross offering (in percent)				3.50%
Selling commission				$ 746,368
Dealer manager fees				$ 190,626
Moody National Advisor I LLC - Advisor [Member]
Percent of organization and offering costs (in percent)				15.00%
Monthly asset management fee percentage				0.833%
Assets management fee				$ 2,626,589		2,071,879
Disposition fee						$ 551,250
Disposition fee percentage						2.25%
Operating expenses				1,231,823
Operating expenses exceeded specified limit				1,231,000
Reimbursable expenses waived or assumed				1,967,721
Moody National Advisor I LLC - Advisor [Member] \| Follow On Offering [Member]
Accumulated offering costs				2,849,000
Total offering costs				14,122,588
Offering cost directly incurred by company				11,397,725
Offering cost reimbursed to advisor				2,724,863
Receivable from Advisor for offering costs				124,000
Total offering costs under DRIP				0
Payable to Advisor for offering costs				0
Moody National Advisor I LLC - Advisor [Member] \| Initial Public Offering [Member]
Accumulated offering costs				$ 3,214,000
Percentage of disposition fee on sale of each property (in percent)				3.00%
Maximum percentage of disposition fee and real estate commissions (in percent)				6.00%

Moody National REIT I, Inc. 10-K