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Debt (Details) (USD $)
12 Months Ended 0 Months Ended 12 Months Ended
Dec. 31, 2014
Jul. 29, 2010
Dec. 31, 2013
Jul. 11, 2013
Debt Instrument [Line Items]        
Total debt $ 323,234,000us-gaap_LongTermDebtNoncurrent   $ 330,183,000us-gaap_LongTermDebtNoncurrent  
9.5% senior secured notes, net of discount 306,200,000us-gaap_SecuredDebt   305,200,000us-gaap_SecuredDebt  
Interest rate (in hundredths) 9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage   9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage  
Excess availability under line of credit for fixed charge coverage ratio 10,000,000acw_ExcessAvailabilityUnderLineOfCreditForFixedChargeCoverageRatio   10,000,000acw_ExcessAvailabilityUnderLineOfCreditForFixedChargeCoverageRatio  
Excess availability under line of credit as percentage of aggregate commitments (in hundredths) 10.00%acw_ExcessAvailabilityUnderLineOfCreditAsPercentageOfAggregateCommitments   10.00%acw_ExcessAvailabilityUnderLineOfCreditAsPercentageOfAggregateCommitments  
9.5% senior secured notes [Member]        
Debt Instrument [Line Items]        
9.5% senior secured notes, net of discount 306,234,000,000us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
  305,200,000us-gaap_SecuredDebt
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
 
Interest rate (in hundredths) 9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
  9.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
 
Refinancing of debt 310,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
     
Unamortized discount 3,766,000,000us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_DebtInstrumentAxis
= acw_SeniorSecured95NotesMember
     
Prior ABL Facility [Member]        
Debt Instrument [Line Items]        
Average interest rate (in hundredths) 2.55%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
  3.70%us-gaap_DebtWeightedAverageInterestRate
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
 
Average amount outstanding 31,002,000us-gaap_LineOfCreditFacilityAverageOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
  38,180,000us-gaap_LineOfCreditFacilityAverageOutstandingAmount
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
 
Aggregate availability subject to certain conditions   100,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Credit facility principal amount   75,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Maturity date Jul. 29, 2014      
Commitment fee if utilization within limit (in hundredths)   0.75%acw_LineOfCreditFacilityCommitmentFeePercentageIfUtilizationWithinLimit
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Commitment fee if utilization more than limit (in hundredths)   0.50%acw_LineOfCreditFacilityCommitmentFeePercentageIfUtilizationMoreThanLimit
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Utilization percentage of commitments (in hundredths)   50.00%acw_UtilizationPercentageOfCommitments
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
New ABL Facility [Member]        
Debt Instrument [Line Items]        
Borrowed amount from credit facility 17,000,000,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
  25,000,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
45,300,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
Interest rate terms Borrowings under the New ABL Facility bear interest through maturity at a variable rate based upon, at our option, either LIBOR or the base rate (which is the greatest of one-half of 1.00% in excess of the federal funds rate, 1.00% in excess of the one-month LIBOR rate and the Agent’s prime rate), plus, in each case, an applicable margin.      
Excess availability of facility to maintain fixed charge coverage ratio, minimum     10,000,000acw_MinimumExcessAvailabilityOfFacilityToMaintainFixedChargeCoverageRatio
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
 
Credit facility principal amount     100,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
 
Increased availability under the facility 25,000,000acw_IncreasedAvailabilityUnderFacility
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
Maturity date Jul. 11, 2018      
Commitment fee if utilization within limit (in hundredths)     0.25%acw_LineOfCreditFacilityCommitmentFeePercentageIfUtilizationWithinLimit
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
 
Commitment fee if utilization more than limit (in hundredths)     0.375%acw_LineOfCreditFacilityCommitmentFeePercentageIfUtilizationMoreThanLimit
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
 
Utilization percentage of commitments (in hundredths)     50.00%acw_UtilizationPercentageOfCommitments
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
 
New ABL Facility [Member] | Base Rate [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
     
New ABL Facility [Member] | LIBOR [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 3.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
     
Letter of credit [Member] | Prior ABL Facility [Member]        
Debt Instrument [Line Items]        
Aggregate availability subject to certain conditions   10,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Letter of credit [Member] | New ABL Facility [Member]        
Debt Instrument [Line Items]        
Aggregate availability subject to certain conditions 20,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
Revolving Credit Facility [Member] | New ABL Facility [Member]        
Debt Instrument [Line Items]        
Credit facility principal amount 90,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
First In Last Out Term Facility [Member] | New ABL Facility [Member]        
Debt Instrument [Line Items]        
Credit facility principal amount 10,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= acw_FirstInLastOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
Increased availability under the facility 50,000,000acw_IncreasedAvailabilityUnderFacility
/ us-gaap_CreditFacilityAxis
= acw_FirstInLastOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
First In Last Out Term Facility [Member] | New ABL Facility [Member] | LIBOR [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 2.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_FirstInLastOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
     
First In Last Out Term Facility [Member] | New ABL Facility [Member] | LIBOR [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 3.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_FirstInLastOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
     
First In First Out Term Facility [Member] | New ABL Facility [Member] | Base Rate [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_FirstInFirstOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
     
First In First Out Term Facility [Member] | New ABL Facility [Member] | Base Rate [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_FirstInFirstOutTermFacilityMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
     
Swingline Loans [Member] | Prior ABL Facility [Member]        
Debt Instrument [Line Items]        
Aggregate availability subject to certain conditions   25,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= acw_SwinglineLoansMember
/ us-gaap_DebtInstrumentAxis
= acw_PriorAblFacilityMember
   
Swingline Loans [Member] | New ABL Facility [Member]        
Debt Instrument [Line Items]        
Aggregate availability subject to certain conditions $ 10,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= acw_SwinglineLoansMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
     
Other Advances [Member] | New ABL Facility [Member] | Base Rate [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 0.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_OtherAdvancesMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
     
Other Advances [Member] | New ABL Facility [Member] | Base Rate [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 0.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_OtherAdvancesMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
     
Other Advances [Member] | New ABL Facility [Member] | LIBOR [Member] | Minimum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_OtherAdvancesMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
     
Other Advances [Member] | New ABL Facility [Member] | LIBOR [Member] | Maximum [Member]        
Debt Instrument [Line Items]        
Basis spread (in hundredths) 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= acw_OtherAdvancesMember
/ us-gaap_DebtInstrumentAxis
= acw_NewAblFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember