Debt - Additional Information (Detail)									12 Months Ended
		Mar. 29, 2019	Feb. 23, 2019	Aug. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Feb. 23, 2018 USD ($) Property Loan	Sep. 28, 2017 USD ($)	Jun. 28, 2017 USD ($)	Dec. 31, 2018 USD ($) Property Loan		Oct. 09, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Instrument [Line Items]
Secured debt									$ 203,735,898			$ 52,299,638
Carrying Value									$ 205,919,928
Key Bank [Member]
Debt Instrument [Line Items]
Payment of fees					$ 1,200,000
Nationwide Loan [Member]
Debt Instrument [Line Items]
Secured debt							$ 23,500,000
Loan maturity date							Oct. 01, 2024
Debt instrument, initial interest rate							3.84%
Loan prepayment period after written notice							30 days
Zero prepayment penalty period							6 months
Description of guarantees									We and an entity controlled by our CEO originally served as non-recourse guarantors pursuant to the terms and conditions of the Nationwide Loan. The non-recourse guaranty of the entity controlled by our CEO expired as of April 2018.
Freddie Mac Utah Loans [Member]
Debt Instrument [Line Items]
Secured debt						$ 46,900,000
Debt term						10 years
Loan maturity date	[1]								Feb. 23, 2028
Debt instrument, initial interest rate						5.06%			5.06%	[1]
Description of guarantees									We serve as non-recourse guarantors pursuant to the terms and conditions of the Freddie Mac Utah Loans. During the term of the Freddie Mac Utah Loans, we are required to maintain a net worth equal to or greater than $15 million and an initial liquidity requirement equal to or greater than $4.8 million. Once the Utah Bridge Loan (defined below) is paid in full, the liquidity requirement will be reduced to $3 million.
Number of property-owning special purpose entities | Property						3
Number of mortgage loans | Loan						3			3
Debt instrument, interest payment period						2 years			2 years
Amortization period						30 years			30 years
Carrying Value	[1]								$ 46,905,000
Freddie Mac Utah Loans [Member] | Minimum [Member]
Debt Instrument [Line Items]
Non-recourse guaranty expiry threshold net worth									15,000,000
Non-recourse guaranty expiry threshold liquidity.									$ 4,800,000
Utah Bridge Loan [Member]
Debt Instrument [Line Items]
Secured debt						$ 24,500,000
Loan maturity date						Feb. 23, 2019			Apr. 30, 2020	[2]
Debt instrument, initial interest rate	[2]								6.51%
Debt instrument, description of variable rate									1-month Libor plus 400 basis points
Debt instrument, variable interest rate									4.00%
Carrying Value	[2]								$ 12,195,108
Loan maturity conditional maturity date									Aug. 23, 2019
Commitment fee percentage on loan principal outstanding									0.50%
Percentage of net proceeds from certain capital events required to be applied									100.00%
Utah Bridge Loan [Member] | Subsequent Event
Debt Instrument [Line Items]
Loan maturity date		Apr. 30, 2020	Aug. 23, 2019
Utah Bridge Loan [Member] | Key Bank [Member]
Debt Instrument [Line Items]
Proceeds to be applied for loan payment amount									$ 1,000,000
Utah Bridge Loan [Member] | Minimum [Member]
Debt Instrument [Line Items]
Non-recourse guaranty expiry threshold liquidity.									$ 3,000,000
Courtyard Freddie Mac Mortgage Loan [Member]
Debt Instrument [Line Items]
Secured debt				$ 63,200,000
Debt term				10 years
Loan maturity date	[3]								Sep. 01, 2028
Debt instrument, initial interest rate				4.86%					4.86%	[3]
Description of guarantees									We serve as non-recourse guarantors pursuant to the terms and conditions of the Freddie Mac Courtyard Loan. During the term of the Freddie Mac Courtyard Loan, we are required to maintain a net worth equal to or greater than $18.96 million and an initial liquidity requirement equal to or greater than $6.32 million. Once the Courtyard Bridge Loans are paid in full and the Memory Care Expansion (each defined further below) is complete, the liquidity requirement will be reduced to $4.8 million. We are able to reduce each of the foregoing liquidity requirements by an additional amount equal to the amount of the 12-month trailing cash flows of all our properties, up to a maximum reduction of $1.5 million.
Debt instrument, interest payment period				4 years					4 years
Amortization period				30 years					30 years
Carrying Value	[3]								$ 63,200,000
Courtyard Freddie Mac Mortgage Loan [Member] | Minimum [Member]
Debt Instrument [Line Items]
Non-recourse guaranty expiry threshold net worth				$ 18,960,000
Non-recourse guaranty expiry threshold liquidity.				6,320,000
Courtyard Freddie Mac Mortgage Loan [Member] | Maximum [Member]
Debt Instrument [Line Items]
Non-recourse guaranty expiry threshold liquidity.				1,500,000
Courtyard Bridge Loans [Member]
Debt Instrument [Line Items]
Loan maturity date									Aug. 31, 2019
Debt instrument, initial interest rate									6.53%
Non-recourse guaranty expiry threshold liquidity.				$ 4,800,000
Debt instrument, description of variable rate									1-month Libor plus 400 basis points
Debt instrument, variable interest rate									4.00%
Loan maturity conditional maturity date									Apr. 30, 2020
Commitment fee percentage on loan principal outstanding									0.50%
Percentage of net proceeds from certain capital events required to be applied									100.00%
Number of memory care units expected to be completed in property acquisition | Property									23
Fayetteville Bridge Loan [Member]
Debt Instrument [Line Items]
Secured debt								$ 22,300,000
Debt instrument, initial interest rate								5.23%
Debt instrument, description of variable rate									1-month Libor plus 400 basis points
Debt instrument, variable interest rate								4.00%
Tallahassee Bridge Loan [Member]
Debt Instrument [Line Items]
Secured debt							$ 17,600,000
Debt instrument, initial interest rate							5.24%
Debt instrument, description of variable rate									1-month Libor plus 400 basis points
Debt instrument, variable interest rate							4.00%
Courtyard Initial Bridge Loan [Member]
Debt Instrument [Line Items]
Loan maturity date	[4]								Aug. 31, 2019
Debt instrument, initial interest rate	[4]								6.53%
Carrying Value	[4]								$ 27,000,000
Loan maturity conditional maturity date									Apr. 30, 2020
Commitment fee percentage on loan principal outstanding									0.50%
Courtyard Delayed Draw Commitment [Member]
Debt Instrument [Line Items]
Loan maturity date	[4]								Aug. 31, 2019
Debt instrument, initial interest rate	[4]								6.51%
Carrying Value	[4]								$ 3,619,820
Commitment fee percentage on loan principal outstanding									0.50%
Credit drawn amount											$ 2,500,000
Unused commitment fee percentage									0.35%
Courtyard Delayed Draw Commitment [Member] | Maximum [Member]
Debt Instrument [Line Items]
Delayed draw commitment, amount									$ 14,000,000
Fayetteville Property [Member] | JPM Mortgage Loan [Member]
Debt Instrument [Line Items]
Secured debt								$ 29,500,000
Debt term								7 years
Loan maturity date								Jul. 01, 2024	Jul. 01, 2024	[5]
Debt instrument, initial interest rate								4.20%	4.20%	[5]
Loan prepayment period after written notice								30 days
Zero prepayment penalty period								90 days
Description of guarantees									We and H. Michael Schwartz, our Chief Executive Officer (our “CEO”), serve as non-recourse guarantors pursuant to the terms and conditions of the JPM Mortgage Loan. The non-recourse guaranty of our CEO will expire, upon request, and be of no further force and effect at such time as we have: (1) a net worth (as defined in the agreement) equal to or greater than $40 million; and (2) liquidity (as defined in the agreement) equal to or greater than $3 million.
Carrying Value	[5]								$ 29,500,000			$ 29,500,000
Fayetteville Property [Member] | JPM Mortgage Loan [Member] | Minimum [Member]
Debt Instrument [Line Items]
Non-recourse guaranty expiry threshold net worth								$ 40,000,000
Non-recourse guaranty expiry threshold liquidity.								$ 3,000,000

[1] Represents the aggregate of three separate mortgage loans for three properties acquired in Utah. Fixed rate debt with interest only payments due monthly for the first two years, then principal and interest on a 30-year amortization schedule thereafter.

[2] Variable rate debt with interest only payments due monthly. The variable rate reflected in the table was the rate in effect as of December 31, 2018. On February 23, 2019, we elected to exercise an option available to us under the current loan agreement to extend the maturity date six months to August 23, 2019. On March 29, 2019, we amended the loan agreement to further extend the loan maturity date to April 30, 2020. Please see Note 11 – Subsequent Events for additional detail.

[3] Fixed rate debt with interest only payments due monthly for the first four years, then principal and interest on a 30-year amortization schedule thereafter.

[4] Variable rate debt with interest only payments due monthly. The variable rate reflected in the table was the rate in effect as of December 31, 2018. The loan may be extended eight months from the maturity date upon the payment of a fee equal to 0.50% of the outstanding principal balance of the loan at the time of such extension and certain other terms are met, such as there has not been an event of default.

[5] Fixed rate debt with interest only payments due monthly and the principal balance due upon maturity.