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Other assets and gain on sale of merchant services business - Components of Other Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Other assets and gain on sale of merchant services business.    
Other real estate owned $ 358 $ 393
Investment in residential housing program 7,959 8,312
Mortgage servicing rights 728 698
Bank owned life insurance 33,646 33,073
Restricted equity securities 6,341 7,051
Other assets 17,374 15,974
Total $ 66,406 $ 65,501