11. Restructuring Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Accrued restructuring costs	$ 834	$ 251	$ 834	$ 251	$ 104	$ 0
Restructuring charges	2,277	(4)	2,277	1,193
Restructuring cash			(1,547)	(289)
Restructuring noncash			0	(653)
2016 Restructing Costs
Accrued restructuring costs	834		834		0
Restructuring charges			2,277
Restructuring cash			(1,443)
Restructuring noncash			0
2015 Restructing Costs
Accrued restructuring costs	$ 0	$ 251	0	251	$ 104	$ 0
Restructuring charges			0	1,193
Restructuring cash			(104)	(289)
Restructuring noncash			$ 0	$ (653)