Goodwill and intangible assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	Goodwill
Balance, December 31, 2013	$	1,496
Additions (disposals)		–
Balance, December 31, 2014		1,496
Additions (disposals)		–
Balance, December 31, 2015	$	1,496

	Intangible assets
Balance, December 31, 2013	$	1,714
Disposals		–
Additions		354
Impairment		(135	)
Amortization		(325	)
Balance, December 31, 2014		1,608
Disposals		(179	)
Impairment		(472	)
Amortization		(227	)
Balance, December 31, 2015	$	730

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Estimated remaining	As of December 31,
	useful life	2015			2014
Intellectual property	6 years	$	1,440		$	2,105
Software and website development	1 year		65			65
Less: Accumulated amortization			(775	)		(562	)
Intangible assets, net		$	730		$	1,608

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	Intellectual property		Software and website development		Total
2016	$	155	$	18	$	173
2017		153		–		153
2018		153		–		153
2019		153		–		153
2020		98		–		98
Balance, December 31, 2015	$	712	$	18	$	730