Stock-Based Compensation Plans - Summary of Nonvested RSAs (Details) - Restricted Share Awards (RSAs)	6 Months Ended
Jun. 30, 2019 $ / shares shares
Number of Shares
Nonvested, beginning balance (in shares) \| shares	213,337
Vested (in shares) \| shares	(104,763)
Forfeited (in shares) \| shares	(9,068)
Nonvested, ending balance (in shares) \| shares	99,506
Weighted Average Grant Date Fair Value
Nonvested, beginning balance (in dollars per share) \| $ / shares	$ 20.21
Vested (in dollars per share) \| $ / shares	20.21
Forfeited (in dollars per share) \| $ / shares	20.12
Nonvested, ending balance (in dollars per share) \| $ / shares	$ 20.21

No definition available.

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- 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
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-SubTopic 10
-Section 50
-Paragraph 2
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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.

+ References

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-Publisher FASB
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-Topic 718
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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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-Publisher FASB
-Name Accounting Standards Codification
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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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- Definition

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.

+ References

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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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