Loans - Allowance for Loan Loss Methodology (Details)	6 Months Ended
Jun. 30, 2016
Loans
Historical loss period used to capture relevant loss data for each loan segment	10 years
Period of charge-off trends to be considered for adjustment to historical loss factor	3 years

Represents the historical loss period used to capture relevant loss data for each loan segment for computing a valuation allowance for financing receivables that is expected to be uncollectible.

No definition available.

Name:	cway_FinancingReceivableAllowanceForCreditLossesHistoricalLossPeriodUsedToCaptureRelevantLossDataForEachLoanSegment
Namespace Prefix:	cway_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration