Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Summary Of Significant Accounting Policies Details Narrative
Probability of default or principal loss - low	15.00%
Probability of default or principal loss - medium	33.00%
Probability of default or principal loss - high	67.00%
Outstanding principal balances of loans, less than	$ 10,000

Loans with a principal balance less than the stated amount are pooled in determining a general loan loss provision, rather than being considered on a loan-by-loan basis as with other, larger loans.

No definition available.

Name:	CT_OutstandingPrincipalBalancesOfLoansLessThan
Namespace Prefix:	CT_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant