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Shareholder Rights Plan (Details) (USD $)	Dec. 31, 2012 Right
Shareholder Rights Plan (Textual) [Abstract]
Number Of Series A Junior Participating Preferred Stock Shares Reserved	150,000
Number of- non detachable preferred stock purchase Rights distributed as a dividend to shareholders of record on July 9, 2000	1
Price at which shareholders holding a Right may purchase 1/100th of a share of preferred stock	$ 83.00
Acquisition percentage to cause Rights to become exercisable	15.00%
Market value, multiple over exercise price	2
Value at which Company may redeem rights	$ 0.01

X

- Definition

Percentage of Company's outstanding shares of common stock which person or group must acquire or commence a tender offer to acquire to cause Rights to become exercisable.

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No definition available.

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X

- Definition

Dividend distribution under shareholder rights plan.

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X

- Definition

Number of Series A Junior Participating Preferred Stock Shares reserved under the Shareholder Rights Plan.

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No definition available.

+ Details

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X

- Definition

Price at which shareholders holding a Right may purchase 1/100th of a share of preferred stock under the Shareholder Rights Plan.

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No definition available.

+ Details

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X

- Definition

Under certain circumstances, the value at which the Company may redeem the right.

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+ Details

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- Details

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- Definition

If exercised, the value of common stock of the Company or an acquiring company a Right holder may purchase. This amount is equal to two times the exercise price of the Right.

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No definition available.

+ Details

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