Portfolio loans - Past Due and Still Accruing or on a Non-accrual Status Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Loans past due
Loans past due, still accruing		$ 1,601
90+Days	$ 258
Non-accrual Loans	32,816	34,997
30 to 59 Days
Loans past due
Loans past due, still accruing	15,723	5,053
60 to 89 Days
Loans past due
Loans past due, still accruing	2,317	2,068
Commercial
Loans past due
Loans past due, still accruing		775
Non-accrual Loans	10,647	17,953
Commercial | 30 to 59 Days
Loans past due
Loans past due, still accruing	2,745	158
Commercial | 60 to 89 Days
Loans past due
Loans past due, still accruing	593	140
Commercial real estate
Loans past due
90+Days	38
Non-accrual Loans	12,780	10,298
Commercial real estate | 30 to 59 Days
Loans past due
Loans past due, still accruing	4,519	148
Commercial real estate | 60 to 89 Days
Loans past due
Loans past due, still accruing	608	558
Real estate construction
Loans past due
Loans past due, still accruing		58
Non-accrual Loans	826	18
Real estate construction | 30 to 59 Days
Loans past due
Loans past due, still accruing	103	121
Real estate construction | 60 to 89 Days
Loans past due
Loans past due, still accruing	107
Retail real estate
Loans past due
Loans past due, still accruing		766
90+Days	220
Non-accrual Loans	8,529	6,698
Retail real estate | 30 to 59 Days
Loans past due
Loans past due, still accruing	8,140	4,578
Retail real estate | 60 to 89 Days
Loans past due
Loans past due, still accruing	987	1,368
Retail other
Loans past due
Loans past due, still accruing		2
Non-accrual Loans	34	30
Retail other | 30 to 59 Days
Loans past due
Loans past due, still accruing	216	48
Retail other | 60 to 89 Days
Loans past due
Loans past due, still accruing	$ 22	$ 2