9. Employee Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Components of net periodic cost (benefit)
Service cost	$ 0	$ 0
Interest cost	202	194
Expected return on assets	(253)	(291)
Amortization of transition (asset)/obligation	0	0
Amortization of net (gain)/loss	94	111
Net periodic cost (benefit)	$ 43	$ 14