Income Taxes - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
Dec. 31, 2012	Jun. 30, 2012
Income Taxes [Line Items]
Valuation allowance against deferred tax assets	$ 2,700,000	$ 2,600,000
Accrued of unrecognized tax benefits	323,000	313,000
Effective tax rate	47,000
Interest or penalties applicable to unrecognized tax benefits	$ 0	$ 0

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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