Represents the number of units accrued under dividend equivalents.

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that are scheduled to vest.

+ References

No definition available.

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- Definition

Number of vested equity instruments other than options outstanding.

+ References

No definition available.

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- Definition

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

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- Definition

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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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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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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- Definition

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

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.

+ References

No definition available.

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Stock-Based Compensation - Restricted Stock Units (Details) - Equity Plan - Restricted Stock Units - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		74 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019
Stock-based compensation
Units granted					423,105
Number of vested units	254,955		254,955		254,955
Number of unvested units	168,150		168,150		168,150
Compensation expense recognized	$ 400	$ 200	$ 900	$ 400
Unrecognized compensation expense	$ 2,900		$ 2,900		$ 2,900
Period to recognize unrecognized compensation expense			2 years 2 months 12 days
Accrued dividend equivalent units	1,745		1,745		1,745
2019 (remaining nine months)
Stock-based compensation
Number of Units to Vest	4,393		4,393		4,393
2020
Stock-based compensation
Number of Units to Vest	11,067		11,067		11,067
2021
Stock-based compensation
Number of Units to Vest	122,649		122,649		122,649
2022
Stock-based compensation
Number of Units to Vest	27,700		27,700		27,700
2023
Stock-based compensation
Number of Units to Vest	2,341		2,341		2,341
Executives
Stock-based compensation
Units granted					423,105