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Stock Based Compensation (Details) - 2017 Incentive Plan and 2012 Incentive Plan	3 Months Ended
	Mar. 31, 2019 $ / shares shares
Service Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance - nonvested shares, Maximum Awarded Unit | shares	87,955
Granted, Maximum Awarded Units | shares	18,913
Vested, Maximum Awarded Units | shares	0
Forfeited, Maximum Awarded Units | shares	0
Ending balance - nonvested shares, Maximum Awarded Unit | shares	106,868
Beginning balance - nonvested shares, Weighted Average Grant Date Fair Value | $ / shares	$ 13.04
Granted, Weighted Average Grant Date Fair Value | $ / shares	13.61
Vested, Weighted Average Grant Date Fair Value | $ / shares	0
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	0
Ending balance - nonvested shares, Weighted Average Grant Date Fair Value | $ / shares	$ 13.14
Performance Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance - nonvested shares, Maximum Awarded Unit | shares	203,828
Granted, Maximum Awarded Units | shares	67,651
Vested, Maximum Awarded Units | shares	0
Forfeited, Maximum Awarded Units | shares	0
Ending balance - nonvested shares, Maximum Awarded Unit | shares	271,479
Beginning balance - nonvested shares, Weighted Average Grant Date Fair Value | $ / shares	$ 11.96
Granted, Weighted Average Grant Date Fair Value | $ / shares	13.50
Vested, Weighted Average Grant Date Fair Value | $ / shares	0.00
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	0.00
Ending balance - nonvested shares, Weighted Average Grant Date Fair Value | $ / shares	$ 12.35

X

- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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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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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 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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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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