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11. Restructuring Complete (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Restructuring charges	$ 100	$ 0
Contract termination
Accrued restructuring costs	590		$ 618
Restructuring charges	100
Restructuring cash	(128)
Restructuring noncash	$ 0
Employee termination
Accrued restructuring costs			0	$ 104
Restructuring charges			0
Restructuring cash			(104)
Restructuring noncash			$ 0