XML 67 R38.htm IDEA: XBRL DOCUMENT v2.4.1.9
Long-Term Indebtedness (Details) (USD $)
In Thousands, unless otherwise specified
Feb. 28, 2015
Aug. 31, 2014
Debt Instrument [Line Items]    
Total Senior Indebtedness $ 586,750us-gaap_LongTermDebt $ 390,000us-gaap_LongTermDebt
Less: current maturities of long-term debt (6,750)us-gaap_LongTermDebtCurrent (4,500)us-gaap_LongTermDebtCurrent
Total long-term debt, less current maturities 580,000us-gaap_LongTermDebtNoncurrent 385,500us-gaap_LongTermDebtNoncurrent
Line of Credit    
Debt Instrument [Line Items]    
Total Senior Indebtedness 286,750us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
90,000us-gaap_LongTermDebt
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Line of Credit | Senior Credit Facility - Revolver    
Debt Instrument [Line Items]    
Total Senior Indebtedness 199,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_SeniorCreditFacilityRevolverMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
0us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_SeniorCreditFacilityRevolverMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Line of Credit | Senior Credit Facility - Term Loan    
Debt Instrument [Line Items]    
Total Senior Indebtedness 87,750us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_SeniorCreditFacilityTermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
90,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_SeniorCreditFacilityTermLoanMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_LineOfCreditMember
Senior Notes | 5.625% Senior Notes    
Debt Instrument [Line Items]    
Total Senior Indebtedness $ 300,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_FivePointSixTwoFiveSeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
$ 300,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= atu_FivePointSixTwoFiveSeniorNotesMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember