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Equity-Based Compensation (Summary of the range of exercise prices and the weighted average remaining contractual life of the options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Number of Options Outstanding	917,269	951,523	888,571	908,118
Weighted Average Exercise Price outstanding	$ 14.08	$ 12.45	$ 14.12	$ 14.46
Weighted Average Contract Life Remaining	5 years 6 months
Number of Options Exercisable	518,130
Weighted Average Exercise Price	$ 12.6
Price Range One [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	5.63
Range of Exercise Prices -Upper Range	$ 8.45
Number of Options Outstanding	4,078
Weighted Average Exercise Price outstanding	$ 8.28
Weighted Average Contract Life Remaining	2 years 4 months
Number of Options Exercisable	4,078
Weighted Average Exercise Price	$ 8.28
Price Range Two [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	8.46
Range of Exercise Prices -Upper Range	$ 11.26
Number of Options Outstanding	1,000
Weighted Average Exercise Price outstanding	$ 10.29
Weighted Average Contract Life Remaining	7 months
Number of Options Exercisable	1,000
Weighted Average Exercise Price	$ 10.29
Price Range Three [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	11.27
Range of Exercise Prices -Upper Range	$ 14.08
Number of Options Outstanding	437,266
Weighted Average Exercise Price outstanding	$ 11.91
Weighted Average Contract Life Remaining	3 years 7 months
Number of Options Exercisable	401,002
Weighted Average Exercise Price	$ 11.92
Price Range Four [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	14.09
Range of Exercise Prices -Upper Range	$ 16.9
Number of Options Outstanding	302,200
Weighted Average Exercise Price outstanding	$ 15.37
Weighted Average Contract Life Remaining	6 years 8 months
Number of Options Exercisable	110,550
Weighted Average Exercise Price	$ 15.1
Price Range Five [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	16.91
Range of Exercise Prices -Upper Range	$ 19.71
Number of Options Outstanding	171,225
Weighted Average Exercise Price outstanding	$ 17.44
Weighted Average Contract Life Remaining	8 years 2 months
Number of Options Exercisable	0
Weighted Average Exercise Price	$ 0
Price Range Six [Member]
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Line Items
Range of Exercise Prices - Lower Range	19.72
Range of Exercise Prices -Upper Range	$ 22.53
Number of Options Outstanding	1,500
Weighted Average Exercise Price outstanding	$ 21.86
Weighted Average Contract Life Remaining	1 year 2 months
Number of Options Exercisable	1,500
Weighted Average Exercise Price	$ 21.86

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ 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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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ 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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+ References

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

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

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

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+ References

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+ References

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Weighted average remaining contractual term for option awards outstanding, 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
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-Topic 718
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