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EARNINGS PER SHARE - Additional Information (Detail) (Employee Stock Option [Member])
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Employee Stock Option [Member]
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Stock options excluded from diluted earnings per share 178us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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= us-gaap_EmployeeStockOptionMember
207us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
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= us-gaap_EmployeeStockOptionMember
274us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember