Portfolio loans - Past Due and Still Accruing or on a Non-accrual Status Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loans past due
Loans past due, still accruing		$ 1,601
90+Days	$ 1,276
Non-accrual Loans	31,827	34,997
30 to 59 Days
Loans past due
Loans past due, still accruing	5,352	5,053
60 to 89 Days
Loans past due
Loans past due, still accruing	7,082	2,068
Commercial
Loans past due
Loans past due, still accruing		775
90+Days	698
Non-accrual Loans	10,708	17,953
Commercial | 30 to 59 Days
Loans past due
Loans past due, still accruing	464	158
Commercial | 60 to 89 Days
Loans past due
Loans past due, still accruing	584	140
Commercial real estate
Loans past due
90+Days	222
Non-accrual Loans	11,852	10,298
Commercial real estate | 30 to 59 Days
Loans past due
Loans past due, still accruing	474	148
Commercial real estate | 60 to 89 Days
Loans past due
Loans past due, still accruing	3,040	558
Real estate construction
Loans past due
Loans past due, still accruing		58
Non-accrual Loans	611	18
Real estate construction | 30 to 59 Days
Loans past due
Loans past due, still accruing	229	121
Real estate construction | 60 to 89 Days
Loans past due
Loans past due, still accruing	198
Retail real estate
Loans past due
Loans past due, still accruing		766
90+Days	354
Non-accrual Loans	8,591	6,698
Retail real estate | 30 to 59 Days
Loans past due
Loans past due, still accruing	4,119	4,578
Retail real estate | 60 to 89 Days
Loans past due
Loans past due, still accruing	3,252	1,368
Retail other
Loans past due
Loans past due, still accruing		2
90+Days	2
Non-accrual Loans	65	30
Retail other | 30 to 59 Days
Loans past due
Loans past due, still accruing	66	48
Retail other | 60 to 89 Days
Loans past due
Loans past due, still accruing	$ 8	$ 2