Organization and Summary of Significant Accounting Policies (Inventories) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
LIFO Inventory Amount	$ 12,700,000	$ 17,100,000
Percentage of LIFO Inventory	25.00%	27.00%
Inventory, LIFO Reserve, Effect on Income, Net	7,400,000	6,500,000
Inventory, Gross [Abstract]
Raw Materials	24,301,000	29,064,000
Work in Process	13,536,000	13,154,000
Finished Goods	29,052,000	30,960,000
Total Inventory	$ 66,889,000	$ 73,178,000