Property and equipment table (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 30,207	$ 24,967
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(12,916)	(7,107)
Property, Plant and Equipment, Net	17,291	17,860
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	5,695	5,502
Computer Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	18,985	14,699
Office Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 3,413	$ 2,652