INVENTORIES (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
INVENTORIES
Raw materials	$ 46,399,000	$ 41,808,000
Work in process	6,926,000	7,218,000
Finished goods	35,919,000	36,190,000
Inventories	89,244,000	85,216,000
Inventory reserves for obsolescence and other estimated losses	$ 7,700,000	$ 8,300,000