Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.19.1
Stock-Based Compensation (Details) - USD ($)
shares in Thousands
12 Months Ended
Mar. 05, 2021
Mar. 05, 2020
Mar. 05, 2019
Mar. 05, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation         $ 2,671,000 $ 1,796,000 $ 1,685,000
Share-based Compensation Arrangement by Share-based Payment Award, Employee Subscription Rate After Performance Period         The number of LTIP Units earned under the Long-Term Awards will be determined as soon as reasonably practicable following the end of the three-year performance period (2020 or 2021 depending on the program) based on the Company’s TSR on an absolute basis (as to 75% of the Long-Term Award) and relative to the SNL Healthcare REIT Index (as to 25% of the Long-Term Award).    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         75.00%    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         $ 2,900    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition         1 year 8 months 19 days    
Stock Redeemed or Called During Period, Value         $ 263,000    
Performance Goals For Awards         As of December 31, 2018, management estimated that the Performance Goals would be met at a 75% level, and accordingly, applied 75% to the net target 2018 Program Annual Awards to estimate the 2018 Program Annual Awards expected to be earned at the end of the performance period.    
Additional Earn Up Rate For Grantee         150.00%    
2017 Performance Program [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted       36 57    
2017 Program [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     50.00% 50.00%      
Long Term Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00% 50.00%          
Long Tem Incentives Plan Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 50.00% 50.00%          
Long Tem Incentives Plan Units [Member] | 2016 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant         277    
Common Stock, Capital Shares Reserved for Future Issuance         1,232    
Long Tem Incentives Plan Units [Member] | 2017 Program [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted [1]         57    
Long-Term Awards [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate         0.00%    
Long-Term Awards [Member] | Share-based Compensation Award, Tranche Two [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         50.00%    
Long-Term Awards [Member] | Share-based Compensation Award, Tranche One [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         50.00%    
Long-Term Awards [Member] | 2017 Program [Member] | Share-based Compensation Award, Tranche Two [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage     50.00%        
Long-Term Awards [Member] | 2017 Program [Member] | Share-based Compensation Award, Tranche One [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       50.00%      
Long-Term Awards [Member] | Long Term Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate         200.00%    
[1] The 57 LTIP Units represents earned and granted units from the previously disclosed 2017 annual awards (the “Annual Awards”). On March 5, 2018 the Compensation Committee of the Board (the “Compensation Committee”) determined the extent to which the Company achieved the performance goals related to the 2017 Annual Awards and determined the number of LTIP Units that each grantee was entitled to receive. These grants vested 50% on March 5, 2018, the determination date, and 50% vested on December 31, 2018.