Deferred Tax Assets and Liabilities, Current (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current Deferred Income Taxes
Accrued Revenue, Current Portion	$ 13,568,000	$ 9,358,000
Other, net	(168,000)	(366,000)
Total Current Deferred Income Tax Liabilities	$ 13,400,000	$ 9,000,000

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

+ References+ Details

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.

+ References+ Details

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or other income not separately disclosed.

+ References+ Details