Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Components of property, plant and equipment [Abstract]
Property, plant and equipment, Gross	$ 25,304	$ 23,032
Less accumulated depreciation	(18,269)	(17,316)
Property, plant and equipment, Net	7,035	5,716
Depreciation expense recorded	2,100	1,100
Rent received from leases	300	300
Future minimum rent payments due in 2017	200
Future minimum rent payments due in 2018	100
Rental expense on operating leases	1,600	1,400
Future minimum lease payments under all non-cancelable operating leases [Abstract]
2017	1,360
2018	1,109
2019	895
2020	328
2021	208
Thereafter	503
Total	$ 4,403
Minimum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	3 years
Maximum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	25 years
Land [Member]
Components of property, plant and equipment [Abstract]
Property, plant and equipment, Gross	$ 253	253
Building and Improvements [Member]
Components of property, plant and equipment [Abstract]
Property, plant and equipment, Gross	$ 5,816	5,645
Building and Improvements [Member] | Minimum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	20 years
Building and Improvements [Member] | Maximum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	25 years
Rental Property [Member]
Components of property, plant and equipment [Abstract]
Property, plant and equipment, Gross	$ 5,345	5,330
Rental Property [Member] | Minimum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	20 years
Rental Property [Member] | Maximum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	25 years
Furniture and Equipment [Member]
Components of property, plant and equipment [Abstract]
Property, plant and equipment, Gross	$ 13,890	$ 11,804
Furniture and Equipment [Member] | Minimum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	3 years
Furniture and Equipment [Member] | Maximum [Member]
Components of property, plant and equipment [Abstract]
Estimated useful lives	8 years