Segment Reporting - Net Fixed Assets and Total Assets by Geographic Region (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Net fixed assets and total assets by geographic region
Fixed assets	$ 1,538	$ 1,357
Assets	25,102	27,657
United States
Net fixed assets and total assets by geographic region
Fixed assets	1,247	723
Assets	11,266	14,618
Canada
Net fixed assets and total assets by geographic region
Fixed assets	290	632
Assets	11,641	10,394
Europe
Net fixed assets and total assets by geographic region
Fixed assets	1	2
Assets	2,195	2,645
International
Net fixed assets and total assets by geographic region
Fixed assets	291	634
Assets	$ 13,836	$ 13,039