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Equity-Based Compensation Plans (Schedule of Information of Stock Options Outstanding) (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Options outstanding | shares	59,948
Weighted-average remaining contractual, outstanding	1 year 4 months 24 days
Weighted-average exercise price | $ / shares	$ 17.18
Options exercisable | shares	59,948
Weighted-average exercise price | $ / shares	$ 17.18
$13.27 to $15.48 [Member]
Options outstanding | shares	9,000
Weighted-average remaining contractual, outstanding	2 years 4 months 24 days
Weighted-average exercise price | $ / shares	$ 14.35
Options exercisable | shares	9,000
Weighted-average exercise price | $ / shares	$ 14.35
$15.48 to $17.70 [Member]
Options outstanding | shares	34,698
Weighted-average remaining contractual, outstanding	1 year 6 months
Weighted-average exercise price | $ / shares	$ 16.60
Options exercisable | shares	34,698
Weighted-average exercise price | $ / shares	$ 16.60
$17.70 to $19.91 [Member]
Options outstanding | shares	11,250
Weighted-average remaining contractual, outstanding	4 months 24 days
Weighted-average exercise price | $ / shares	$ 19.61
Options exercisable | shares	11,250
Weighted-average exercise price | $ / shares	$ 19.61
$19.91 to $22.21 [Member]
Options outstanding | shares	5,000
Weighted-average remaining contractual, outstanding	1 year 3 months 18 days
Weighted-average exercise price | $ / shares	$ 20.80
Options exercisable | shares	5,000
Weighted-average exercise price | $ / shares	$ 20.80

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ 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)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ 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)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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X

- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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