12. Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues
North America	$ 34,144	$ 53,999	$ 67,351	$ 113,080
India	3,923	3,196	5,442	4,780
Total revenues	38,067	57,195	72,793	117,860
Cost of goods sold
North America	32,517	42,713	65,886	86,122
India	3,601	3,129	5,186	4,761
Total cost of goods sold	36,118	45,842	71,072	90,883
Gross profit (loss)
North America	1,627	11,286	1,465	26,958
India	322	67	256	19
Total gross profit (loss)	$ 1,949	$ 11,353	$ 1,721	$ 26,977