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Deferred Tax Assets and Liabilities, Current (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current Deferred Income Taxes
Accrued Revenue, Current Portion	$ 6,583,000	$ 13,568,000
Other, net	108,000	(168,000)
Total Current Deferred Income Tax Liabilities	$ 6,700,000	$ 13,400,000

Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.

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