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Convertible Preferred Stock (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Par value	$ 225	$ 0
Shares outstanding	22,500	22,500
Series A $20
Par value	95
Shares outstanding	9,500
Liquidation preference	190,000
Series D $20
Par value	130
Shares outstanding	13,000
Liquidation preference	$ 260,000

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

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