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14. Fair Value measurements (Details - Reconciliation for level 3) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Residual Interest in Securitizations:    
Balance at beginning of period $ 854us-gaap_AccountsReceivableFromSecuritization $ 4,824us-gaap_AccountsReceivableFromSecuritization
Cash paid (received) during period (1,158)us-gaap_IncreaseDecreaseInAccountsReceivableFromSecuritization (3,970)us-gaap_IncreaseDecreaseInAccountsReceivableFromSecuritization
Included in earnings 372us-gaap_GainLossOnSecuritizationOfFinancialAssets 0us-gaap_GainLossOnSecuritizationOfFinancialAssets
Balance at end of period $ 68us-gaap_AccountsReceivableFromSecuritization $ 854us-gaap_AccountsReceivableFromSecuritization