Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Tax effect on adjustment to minimum pension liability	$ 5,546	$ 4,268	$ 8,970	$ 769

Other Comprehensive Income Minimum Pension Liability Adjustment Tax

No definition available.

Name:	algi_OtherComprehensiveIncomeMinimumPensionLiabilityAdjustmentTax
Namespace Prefix:	algi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration