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FAIR VALUE MEASUREMENTS (Details) (Money Market Funds [Member], USD $)
Dec. 31, 2014
Dec. 31, 2013
Assets at fair value on recurring basis $ 1,061,726us-gaap_AssetsFairValueDisclosureRecurring $ 1,221,675us-gaap_AssetsFairValueDisclosureRecurring
Fair Value, Inputs, Level 1 [Member]
    
Assets at fair value on recurring basis 1,061,726us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_MoneyMarketFundsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member		 1,221,675us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_MoneyMarketFundsMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel1Member
Fair Value, Inputs, Level 2 [Member]
    
Assets at fair value on recurring basis      
Fair Value, Inputs, Level 3 [Member]
    
Assets at fair value on recurring basis      
Carrying Value [Member]    
Assets at fair value on recurring basis $ 1,061,726us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= cpka_CarryingValueMember
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_MoneyMarketFundsMember		 $ 1,221,675us-gaap_AssetsFairValueDisclosureRecurring
/ us-gaap_BalanceSheetLocationAxis
= cpka_CarryingValueMember
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_MoneyMarketFundsMember