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Stock Based Compensation (Details 1) - $ / shares	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Options Exercisable, Weighted Average Exercise Price	$ 10.27
Officer and Employee Plans [Member]
Exercise Prices	$ 10.57	$ 10.20
Number Outstanding	829,314	483,629
Options Outstanding, Weighted Average Remaining Life	2 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 10.57
Options, Number Exercisable	775,575
Exercise Price One [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 4.08
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	6 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 4.08
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 4.08
Exercise Price Two [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 4.40
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	5 years 10 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 4.40
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 4.40
Exercise Price Three [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 6.20
Number Outstanding	750
Options Outstanding, Weighted Average Remaining Life	5 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 4.40
Options, Number Exercisable	750
Options Exercisable, Weighted Average Exercise Price	$ 6.20
Exercise Price Four [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 6.60
Number Outstanding	64,800
Options Outstanding, Weighted Average Remaining Life	6 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 6.60
Options, Number Exercisable	64,800
Options Exercisable, Weighted Average Exercise Price	$ 6.60
Exercise Price Five [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 6.80
Number Outstanding	40,500
Options Outstanding, Weighted Average Remaining Life	5 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 6.80
Options, Number Exercisable	40,500
Options Exercisable, Weighted Average Exercise Price	$ 6.80
Exercise Price Six [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 9.48
Number Outstanding	58,350
Options Outstanding, Weighted Average Remaining Life	7 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 9.48
Options, Number Exercisable	58,350
Options Exercisable, Weighted Average Exercise Price	$ 9.48
Exercise Price Seven [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 9.52
Number Outstanding	407,400
Options Outstanding, Weighted Average Remaining Life	1 year 8 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 9.52
Options, Number Exercisable	407,400
Options Exercisable, Weighted Average Exercise Price	$ 9.52
Exercise Price Eight [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 9.60
Number Outstanding	71,250
Options Outstanding, Weighted Average Remaining Life	8 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 9.60
Options, Number Exercisable	71,250
Options Exercisable, Weighted Average Exercise Price	$ 9.60
Exercise Price Nine [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 10.00
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	7 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 10.00
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 10.00
Exercise Price Ten [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 10.48
Number Outstanding	79,220
Options Outstanding, Weighted Average Remaining Life	4 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 10.48
Options, Number Exercisable	79,220
Options Exercisable, Weighted Average Exercise Price	$ 10.48
Exercise Price Eleven [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 11.67
Number Outstanding	5,250
Options Outstanding, Weighted Average Remaining Life	5 years 3 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 11.67
Options, Number Exercisable	4,200
Options Exercisable, Weighted Average Exercise Price	$ 11.67
Exercise Price Twelve [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 14.29
Number Outstanding	1,050
Options Outstanding, Weighted Average Remaining Life	2 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 14.29
Options, Number Exercisable	1,050
Options Exercisable, Weighted Average Exercise Price	$ 14.29
Exercise Price Thirteen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 14.40
Number Outstanding	22,005
Options Outstanding, Weighted Average Remaining Life	3 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 14.40
Options, Number Exercisable	22,005
Options Exercisable, Weighted Average Exercise Price	$ 14.40
Exercise Price Fourteen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 15.05
Number Outstanding	52,689
Options Outstanding, Weighted Average Remaining Life	10 years
Options Outstanding, Weighted Average Exercise Price	$ 15.05
Options, Number Exercisable	0
Options Exercisable, Weighted Average Exercise Price	$ 15.05
Exercise Price Fifteen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 31.96
Number Outstanding	14,454
Options Outstanding, Weighted Average Remaining Life	2 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 31.96
Options, Number Exercisable	14,454
Options Exercisable, Weighted Average Exercise Price	$ 31.96
Exercise Price Sixteen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 53.00
Number Outstanding	4,200
Options Outstanding, Weighted Average Remaining Life	4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 53.00
Options, Number Exercisable	4,200
Options Exercisable, Weighted Average Exercise Price	$ 53.00
Exercise Price Seventeen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 60.80
Number Outstanding	688
Options Outstanding, Weighted Average Remaining Life	1 year 7 months 6 days
Options Outstanding, Weighted Average Exercise Price	$ 60.80
Options, Number Exercisable	688
Options Exercisable, Weighted Average Exercise Price	$ 60.80
Exercise Price Eighteen [Member] | Officer and Employee Plans [Member]
Exercise Prices	$ 61.00
Number Outstanding	2,958
Options Outstanding, Weighted Average Remaining Life	1 year 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 61.00
Options, Number Exercisable	2,958
Options Exercisable, Weighted Average Exercise Price	$ 61.00

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.

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