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Repurchase Reserve Liability (Tables)
 9 Months Ended
Sep. 30, 2017
Repurchase Reserve Liability [Abstract]  
Schedule of repurchase reserve liability
    Three Months Ended September 30,     Nine Months Ended September 30,  
(in thousands)   2017     2016     2017     2016  
Balance at beginning of year   $ 160     $ 160     $ 160     $ 160  
Provision for repurchase liability     0       2       0       2  
Reimbursement of expenses     0       (2 )     0       (2 )
Balance at end of year   $ 160     $ 160     $ 160     $ 160