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

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ 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.

+ References

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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		9 Months Ended		65 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Stock-based compensation
Units granted					379,912
Number of vested units	202,121		202,121		202,121
Number of unvested units	177,791		177,791		177,791
Compensation expense recognized	$ 300	$ 200	$ 700	$ 900
Unrecognized compensation expense	$ 3,500		$ 3,500		$ 3,500
Period to recognize unrecognized compensation expense			2 years 6 months
Accrued dividend equivalent units	4,472		4,472		4,472
2019
Stock-based compensation
Number of Units to Vest	52,834		52,834		52,834
2020
Stock-based compensation
Number of Units to Vest	6,674		6,674		6,674
2021
Stock-based compensation
Number of Units to Vest	118,283		118,283		118,283