SEGMENT INFORMATION (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 95,271	$ 87,425	$ 62,863	$ 74,929	$ 78,545	$ 83,108	$ 65,041	$ 73,590	$ 320,488	$ 300,284	$ 293,471
Long-Lived Assets	85,000				87,010				85,000	87,010	86,277
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	9,048				9,255				9,048	9,255	6,009
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									9,048	8,117	7,230
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									9,842	9,484	8,956
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									244,260	231,729	225,397
Long-Lived Assets	75,952				77,755				75,952	77,755	80,268
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									22,493	17,183	16,859
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									30,466	29,318	29,465
South Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales									$ 4,379	$ 4,453	$ 5,564