Long-term Compensation (Details 1) (USD $)	3 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Long-term Compensation [Abstract]
Number of Options: Balance	166,000	166,000
Weighted Average Exercise Price:Outstanding Balance	$ 7.96	$ 7.96
Plan Awards	0
Weighted Average Exercise Price: Plan Awards	$ 0
Options Excercised	0
Weighted Average Exercise Price: Options Exercised	$ 0
Options Forfeited	0
Weighted Average Exercise Price: Options Forfeited	$ 0
Number of Options: Options Exercisable as of March 31, 2013	0
Weighted Average Exercise Price: Options Exercisable as of March 31, 2013	$ 0

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The amount of ownership interest of different classes of partners in limited partnership.

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- 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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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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Weighted average price of options that were either forfeited or expired.

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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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No definition available.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

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No definition available.

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

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