UNAUDITED QUARTERLY INFORMATION (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| UNAUDITED QUARTERLY INFORMATION | |||||||||||
| Net Sales | $ 53,886 | $ 51,404 | $ 53,411 | $ 50,539 | $ 53,230 | $ 53,258 | $ 54,888 | $ 48,241 | $ 209,240 | $ 209,617 | $ 210,982 |
| Gross Profit | 22,274 | 21,311 | 20,853 | 20,101 | 21,894 | 21,771 | 23,391 | 18,429 | |||
| Operating income | 2,484 | 3,154 | 2,004 | 1,973 | 3,346 | 3,772 | 4,524 | 1,036 | 9,615 | 12,678 | 11,701 |
| Other expense, net | (550) | (393) | (407) | (122) | (732) | (574) | (374) | (530) | |||
| Income from operations | 1,934 | 2,761 | 1,597 | 1,851 | 2,614 | 3,198 | 4,150 | 506 | 8,143 | 10,468 | 9,043 |
| Net income attributable to ISG | $ 1,276 | $ 1,778 | $ 934 | $ 853 | $ 657 | $ 2,353 | $ 3,105 | $ 63 | $ 4,841 | $ 6,178 | $ 4,776 |
| Earnings per share attributable to ISG | $ 0.03 | $ 0.05 | $ 0.03 | $ 0.02 | $ 0.02 | $ 0.06 | $ 0.08 | $ 0.00 | $ 0.13 | $ 0.17 | $ 0.13 |
| Diluted earnings per share attributable to ISG | $ 0.03 | $ 0.05 | $ 0.02 | $ 0.02 | $ 0.02 | $ 0.06 | $ 0.08 | $ 0.00 | $ 0.13 | $ 0.16 | $ 0.13 |
| Basic Weighted Average Common shares | 37,198 | 37,315 | 37,199 | 37,032 | 36,702 | 37,039 | 37,220 | 37,383 | 37,186 | 37,086 | 36,810 |
| Diluted weighted average common shares | 38,986 | 39,296 | 38,971 | 38,490 | 38,333 | 38,740 | 38,837 | 38,861 | 38,936 | 38,693 | 38,687 |