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Basis and Summary of Significant Accounting Policies Changes in Accumulated Other Comprehensive Loss by Component (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Accumulated Other Comprehensive Income [Roll Forward]    
Beginning Balance $ (90)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax  
Other comprehensive income 3us-gaap_OtherComprehensiveIncomeLossNetOfTax (4)us-gaap_OtherComprehensiveIncomeLossNetOfTax
Ending Balance (87)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax  
Foreign Currency    
Accumulated Other Comprehensive Income [Roll Forward]    
Beginning Balance (90)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedTranslationAdjustmentMember
 
Other comprehensive income 3us-gaap_OtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedTranslationAdjustmentMember
 
Ending Balance $ (87)us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedTranslationAdjustmentMember