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EARNINGS PER SHARE (EPS) (Details) - Summary of Reconciliation of Share Amounts Used in Earnings Per Share
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Weighted average shares outstanding - basic 45,349us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 48,990us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 45,829us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 50,872us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Incremental shares from stock based compensation 1,874us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 1,853us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Convertible debt due 2017 446us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities 0us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities 0us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities 0us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities
Weighted average shares outstanding - diluted 47,669us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 48,990us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 47,682us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 50,872us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Options [Member]        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive restricted stock excluded from diluted EPS computation 567us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
644us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
580us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
644us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember