12. Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues
North America	$ 32,444	$ 42,886	$ 99,795	$ 155,966
India	6,066	5,462	11,508	10,242
Total revenues	38,510	48,348	111,303	166,208
Cost of goods sold
North America	31,603	35,632	97,489	121,754
India	5,873	5,001	11,059	9,762
Total cost of goods sold	37,476	40,633	108,548	131,516
Gross profit (loss)
North America	841	7,254	2,306	34,212
India	193	461	449	480
Total gross profit (loss)	$ 1,034	$ 7,715	$ 2,755	$ 34,692