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Stock Repurchase (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Mar. 28, 2012	Apr. 01, 2013 Cumulative preferential dividends [Member]	Jun. 30, 2012 Cumulative preferential dividends [Member]
Stock Repurchase (Textual) [Abstract]
Preferred stock entitled to receive dividends					5.00%
Preferred stock dividend				2.00%
Stock Repurchase (Additional Textual) [Abstract]
Repurchase common stock held by promoter, one			2,485,929
Repurchase common stock held by promoter, two			500,000
Repurchase share price per share			$ 20
Total consideration	$ 59,700,000
Stock repurchase from issued shares of Series A Nonconvertible	34,800
Non-Voting Redeemable Preferred Stock with a liquidation preference	$ 1,000
Professional and legal fees	514,000
Redeem portion preferred stock option at price	$ 1,000
Redemption period of preferred stock	5 years
Stock Repurchase in Cash	$ 25,432,000	$ 923,000

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Repurchase common stock held by Promoter Two.

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The cash outflow to reacquire common stock during the period.

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The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

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The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

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A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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