Profit and Loss Allocation and Distributions - Additional Information (Detail) (USD $)	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Distributed Earnings	$ 0	$ 0

- Definition

The total amount of dividends declared in the period for each class of stock and the contractual amount of dividends (or interest on participating income bonds) that must be paid for the period (for example, unpaid cumulative dividends). Dividends declared in the current period do not include dividends declared in respect of prior-period unpaid cumulative dividends. Preferred dividends that are cumulative only if earned are deducted only to the extent that they are earned.

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