Property and equipment table (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 30,085	$ 30,207
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(12,948)	(12,916)
Property, Plant and Equipment, Net	17,137	17,291
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,114	2,114
Building
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6,651	5,695
Computer Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	17,932	18,985
Office Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,368	3,413
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 20	$ 0