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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 01, 2017	Mar. 08, 2017	Oct. 31, 2016	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Earnings Per Share [Line Items]
Common stock, shares issued		333,719		30,482,966	30,482,966	30,482,966	30,482,966
Exercise price (in dollars per share)	$ 29.25	$ 26.66
Stock compensation expense				$ 1,935	$ 3,619
Minimum [Member]
Earnings Per Share [Line Items]
Vesting period (in months)	12 months	12 months	18 months		12 months
Maximum [Member]
Earnings Per Share [Line Items]
Vesting period (in months)	36 months	36 months	42 months		42 months
Restricted Stock Time Based [Member]
Earnings Per Share [Line Items]
Common stock, shares issued			908,540
Employee Stock Option [Member]
Earnings Per Share [Line Items]
Common stock, shares issued		175,026
Performance Shares [Member]
Earnings Per Share [Line Items]
Common stock, shares issued		89,896
Restricted Stock [Member]
Earnings Per Share [Line Items]
Common stock, shares issued	28,856	68,797

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- Definition

Exercise price of the option.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Footnote 5

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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The amount of plan compensation cost recognized during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (c)
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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