Affordable Housing Tax Credit Limited Partnership (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Affordable housing tax credit investment	$ 7,000		$ 5,000
Less amortization	616		492
Net affordable housing tax credit investment	6,384		4,508
Unfunded commitment	$ 4,993		$ 3,372
Funding period for unfunded commitment (in years)	11 years
Investments in Affordable Housing Projects [Abstract]
Tax credits and other tax benefits recognized	$ 262	$ 168
Tax credit amortization expense included in provision for income taxes	$ 124	$ 169