Stock awards granted, percentage.

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Share based compensation arrangement by share based payment award vesting rights absolute return percentage.

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Share based Compensation Arrangement by Share based Payment Award Award Vesting Rights Stockholder Return to the National Association of Real Estate Investment Trusts Retail Index, Percentage.

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No definition available.

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Annual equity grant limit removed as per amendement.

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No definition available.

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Share based compensation vesting number of annual installments.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Classified as Liabilities

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost capitalized for award under share-based payment arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of shares authorized for issuance under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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Share-Based Compensation - Summary (Details)				3 Months Ended		6 Months Ended
Share-Based Compensation - Summary (Details)	Feb. 10, 2020 $ / shares shares	Feb. 11, 2019 $ / shares shares	Feb. 12, 2018 $ / shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) installment $ / shares shares	Jun. 30, 2019 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized (shares)				10,400,000		10,400,000
Share-based compensation cost capitalized as part of real estate assets \| $				$ 5,000	$ 27,000	$ 12,000	$ 41,000
Weighted-Average Grant Date Fair Value
Performance period						3 years
Vesting rate based on achievement of TSR relative to the NAREIT retail index (as a percent)						33.33%
Share based Compensation Arrangement by Share based Payment Award Award Vesting Rights Absolute Total Stockholder Return Metrics Percentage						66.66%
Number of granted annually shares removed as per amendement				200,000		200,000
Unrecognized compensation cost related to nonvested stock awards \| $				$ 2,709,000		$ 2,709,000
Compensation cost to be recognized over a weighted-average period						2 years 4 months 24 days
Shares
Performance period						3 years
Vested each year for the first two anniversaries after conclusion of performance period
Weighted-Average Grant Date Fair Value
Vesting rate						20.00%
Executive Officer \| Maximum
Weighted-Average Grant Date Fair Value
Percentage released stock awards granted						1.00%
Restricted Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense \| $				$ 361,000	546,000	$ 1,505,000	2,259,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (shares)						971,846
Granted (shares)						1,628,397
Vested (shares)						(1,051,783)
Forfeited (shares)						(24,911)
Nonvested, end of period (shares)				1,523,549		1,523,549
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, beginning of period (USD per share) \| $ / shares						$ 5.16
Weighted average grant-date fair value, granted (USD per share) \| $ / shares						0.86
Weighted average grant-date fair value, vested (USD per share) \| $ / shares						2.86
Weighted average grant-date fair value, forfeited (USD per share) \| $ / shares						4.64
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares				$ 2.16		$ 2.16
Number of annual installment for awards to vest \| installment						4
Shares
Nonvested, beginning of period (shares)						971,846
Granted (shares)						1,628,397
Nonvested, end of period (shares)				1,523,549		1,523,549
Total fair value of shares vested						1,051,783
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares				$ 2.16		$ 2.16
Granted (shares)						1,628,397
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (shares)						1,766,580
Granted (shares)						3,408,083
Vested (shares)						0
Nonvested, end of period (shares)				5,174,663		5,174,663
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, beginning of period (USD per share) \| $ / shares						$ 2.96
Weighted average grant-date fair value, granted (USD per share) \| $ / shares						0.84
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.84	$ 4.74	$ 4.76	$ 1.56		$ 1.56
Performance period						3 years
Unrecognized compensation cost related to nonvested stock awards \| $				$ 3,597,000		$ 3,597,000
Shares
Nonvested, beginning of period (shares)						1,766,580
Granted (shares)						3,408,083
Nonvested, end of period (shares)				5,174,663		5,174,663
Shares granted in period classified as liabilities (shares)						211,375
Total fair value of shares vested						0
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.84	$ 4.74	$ 4.76	$ 1.56		$ 1.56
Risk-free interest rate (as a percent)	1.39%	2.54%	2.36%
Expected share price volatility (as a percent)	57.98%	60.99%	42.02%
Performance period						3 years
Granted (shares)						3,408,083
Performance Shares \| Vested each year for the first two anniversaries after conclusion of performance period
Weighted-Average Grant Date Fair Value
Vesting rate						20.00%
Performance Shares \| Vested at conclusion of performance period
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense \| $				$ (60,000)	$ 443,000	$ 418,000	$ 869,000
Weighted-Average Grant Date Fair Value
Vesting rate						60.00%
Performance Shares \| Remaining percentage after performance period
Weighted-Average Grant Date Fair Value
Compensation cost to be recognized over a weighted-average period						4 years 2 months 12 days
Vesting rate						40.00%
Performance Shares \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (shares)	2,131,245	357,800
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.88	$ 2.45
Shares
Granted (shares)	2,131,245	357,800
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.88	$ 2.45
Granted (shares)	2,131,245	357,800
Performance Shares \| Officer
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (shares)	1,065,463	178,875
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.75	$ 2.29
Shares
Granted (shares)	1,065,463	178,875
Weighted average grant-date fair value, nonvested, ending of period (USD per share) \| $ / shares	$ 0.75	$ 2.29
Granted (shares)	1,065,463	178,875