Property and Equipment (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 5,446	$ 5,411
Less accumulated depreciation	3,594	3,531
Property and equipment, net	1,852	1,880
Depreciation expense	79	159
Building and improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,379	3,348
Electronic data processing equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,559	1,548
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 508	$ 515