Stock Incentive Plan - Restricted Stock Awards (Details) - $ / shares	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Incentive Share Activity, Shares
Nonvested - Ending Balance	0	56,000
Restricted Stock
Incentive Share Activity, Shares
Nonvested - Beginning Balance	8,000	16,000
Vested	8,000	8,000
Nonvested - Ending Balance	0	8,000
Incentive Share Activity, Grant Date Fair Value
Nonvested - Beginning Balance	$ 12.23	$ 12.23
Vested	12.23	12.23
Nonvested - Ending Balance	$ 0	$ 12.23
Stock Awards [Member]
Incentive Share Activity, Shares
Granted	21,839	35,911
Incentive Share Activity, Grant Date Fair Value
Granted	$ 9.74	$ 10.02
Performance Units [Member]
Incentive Share Activity, Shares
Nonvested - Beginning Balance	45,305	7,508
Granted	15,707	41,500
Vested	(9,660)	(1,502)
Nonvested - Ending Balance	51,352	47,506
Incentive Share Activity, Grant Date Fair Value
Nonvested - Beginning Balance	$ 10.33	$ 13.32
Granted	9.55	10
Vested	10.52	13.32
Nonvested - Ending Balance	$ 10.06	$ 10.42

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).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average grant-date fair value of non-vested options outstanding.

+ References

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- Definition

Weighted average grant-date fair value of options vested.

+ References

No definition available.

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