Restricted Share Plan - Additional Information (Details)				3 Months Ended		12 Months Ended
	Mar. 16, 2017 Director shares	May 16, 2016 $ / shares shares	Mar. 24, 2016 $ / shares shares	Mar. 31, 2017 USD ($) shares	Mar. 31, 2016 USD ($) shares	Dec. 31, 2016 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense \| $				$ 7,500	$ 330
Weighted average remaining term				3 years 18 days
Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, grants to each independent directors				6,000	3,000
Term of office for Board of Directors	1 year
Number of independent directors \| Director	2
Number of restricted shares issued				1,500
Independent Director One \| Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, shares issuable to each independent directors up on re-election	3,000
Independent Director Two \| Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, shares issuable to each independent directors up on re-election	3,000
Restricted Stock \| Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, vesting period						4 years
Restricted Stock \| Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, shares issuable to each independent directors up on re-election						3,000
Restricted Stock \| Independent Director One \| Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, grants to each independent directors		3,000	3,000
Restricted share plan, grants to each independent directors fair value \| $ / shares		$ 10.00	$ 10.00
Restricted Stock \| Independent Director Two \| Class A Common stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share plan, grants to each independent directors		3,000	3,000
Restricted share plan, grants to each independent directors fair value \| $ / shares		$ 10.00	$ 10.00

Nexpoint Multifamily Capital Trust, Inc. 10-Q