Business Combination (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended													12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016		Sep. 30, 2016	Jun. 30, 2016		Mar. 31, 2016	Dec. 31, 2015		Sep. 30, 2015	Jun. 30, 2015		Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sales		$ 69,257		$ 65,222	$ 62,454		$ 64,711	$ 70,314		$ 78,260	$ 77,959		$ 81,600	$ 261,644	$ 308,133	$ 390,011
Net income (loss)		$ (1,826)	[1]	$ (1,439)	$ (2,557)	[2]	$ (184)	$ (199)	[3]	$ 676	$ (619)	[4]	$ 2,186	$ (6,006)	$ 2,044	$ 14,972
Basic earnings (loss) per share		$ (0.11)	[1]	$ (0.09)	$ (0.16)	[2]	$ (0.01)	$ (0.01)	[3]	$ 0.04	$ (0.04)	[4]	$ 0.13	$ (0.37)	$ 0.12	$ 0.85
Diluted earnings (loss) per share		$ (0.11)	[1]	$ (0.09)	$ (0.16)	[2]	$ (0.01)	$ (0.01)	[3]	$ 0.04	$ (0.04)	[4]	$ 0.13	$ (0.37)	$ 0.12	$ 0.85
Vertex Acquisition [Member]
Sales	$ 7,000													$ 284,310	$ 342,129
Net income (loss)	$ 200													$ (5,466)	$ 3,560
Basic earnings (loss) per share														$ (0.33)	$ 0.21
Diluted earnings (loss) per share														$ (0.33)	$ 0.21

[1] During the fourth quarter of 2016, the Company recorded a charge of $483 of additional cost of sales expense that related to the first three quarters of 2016 and was immaterial to each quarter.

[2] During the second quarter of 2016, the Company recorded a non-cash impairment charge of $2,384. See Note 4 for additional information.

[3] During the fourth quarter of 2015, the Company recorded a non-cash impairment charge of $423. See Note 4 for additional information.

[4] During the second quarter of 2015, the Company recorded a non-cash impairment charge of $2,994. See Note 4 for additional information.