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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Unrecognized cost of unvested share-based compensation awards.

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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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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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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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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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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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 weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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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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Stock Based Compensation - Restricted Stock Units (Details) - Omnibus Plan - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018
Weighted Average Grant Date Fair Value
Unrecognized compensation expense			$ 840
Period over which compensation expense expected to recognize	1 year 2 months 12 days
Restricted stock units
Number of Restricted Stock Units
Units outstanding at the beginning of the period (in shares)	49,677
Granted (in shares)	75,188	47,870
Vested (in shares)	(25,928)
Forfeited (in shares)	(30,288)
Units outstanding at the end of the period (in shares)	68,649	49,677
Weighted Average Grant Date Fair Value
Units outstanding at the beginning of the period (in dollars per shares)	$ 16.20
Granted (in dollars per share)	2.66
Vested (in dollars per share)	10.63
Forfeited (in dollars per share)	9.91
Units outstanding at the end of the period (in dollars per shares)	$ 6.25	$ 16.20
Vesting period	1 year
Compensation expense	$ 961	$ 2,360
Unvested restricted stock (in units)	49,677	49,677	68,649
Restricted stock units \| 2019
Number of Restricted Stock Units
Units outstanding at the end of the period (in shares)	57,563
Weighted Average Grant Date Fair Value
Unvested restricted stock (in units)	57,563		57,563
Restricted stock units \| 2020
Number of Restricted Stock Units
Units outstanding at the end of the period (in shares)	10,843
Weighted Average Grant Date Fair Value
Unvested restricted stock (in units)	10,843		10,843
Restricted stock units \| 2021
Number of Restricted Stock Units
Units outstanding at the end of the period (in shares)	243
Weighted Average Grant Date Fair Value
Unvested restricted stock (in units)	243		243