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Stock Options, Restricted Stock and Restricted Stock Units (Details 1) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Schedule of stock option activity and other stock option information
Exercises, Number of shares
Stock options [Member]
Schedule of stock option activity and other stock option information
Beginning Balance, Number of shares		100,000
Grants, Number of shares
Exercises, Number of shares
Forfeitures/Expirations, Number of shares
Ending Balance, Number of shares		100,000		100,000
Exercisable, Number of shares		100,000
Beginning Balance, Weighted-average exercise price		$ 51.95
Grants, Weighted-average exercise price
Exercises, Weighted-average exercise price
Forfeitures/Expirations, Weighted-average exercise price
Ending Balance, Weighted-average exercise price		$ 51.95		$ 51.95
Exercisable, Weighted-average exercise price		$ 51.95
Weighted-average remaining contractual life (years)		4 years 9 months 18 days		5 years 1 month 6 days
Exercisable, Weighted-average remaining contractual life (years)		4 years 9 months 18 days
Aggregate intrinsic value	[1]			$ 817
Exercisable, Aggregate intrinsic value	[1]
[1] The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the Company's closing stock price on the respective trading day and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holder had all options been exercised on the respective trading day. The amount of intrinsic value will change based on the fair market value of the Company's common stock.

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)
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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.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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

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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.

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Number of share options (or share units) exercised during the current period.

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