Annual report pursuant to Section 13 and 15(d)

Summary of Finite Lived Intangibles Assets by Major Class (Detail)

v2.4.1.9
Summary of Finite Lived Intangibles Assets by Major Class (Detail) (Finite-Lived Intangible Assets [Member], USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Customer-Related Intangible Assets
   
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 978us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
$ 1,038us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
Accumulated amortization (636)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
(582)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
Finite Lived Intangibles 342us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
456us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelatedIntangibleAssetsMember
Marketing-Related Intangible Assets
   
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 1,588us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember
1,436us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember
Accumulated amortization (1,447)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember
(737)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember
Finite Lived Intangibles $ 141us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember
$ 699us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_MarketingRelatedIntangibleAssetsMember