RECENT ACCOUNTING PRONOUNCEMENTS (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Net Sales	$ 195,690	$ 153,363	$ 531,738	$ 455,385
Costs and Expenses
Costs of Operations	174,214	137,713	470,556	406,737
Income Tax Provision	2,748	2,251	8,301	7,666
Net Income	8,677	$ 4,456	22,947	$ 13,720
ASU 2014-09 | Balances Without Adoption of ASU 2014-09
Revenues
Net Sales	193,828		530,718
Costs and Expenses
Costs of Operations	172,724		469,740
Income Tax Provision	2,600		8,188
Net Income	8,453		22,856
ASU 2014-09 | Effect of Adoption Increase/(Decrease)
Revenues
Net Sales	1,862		1,020
Costs and Expenses
Costs of Operations	1,490		816
Income Tax Provision	148		113
Net Income	$ 224		$ 91