Long-Term Debt (Components Of Long-Term Debt) (Details) (USD $)	0 Months Ended
	May 28, 2010	Sep. 30, 2013	Dec. 31, 2012
Line Of Credit Facility And Long Term Debt [Line Items]
5% Senior Subordinated Notes due 2017 (refer to Note 15)		$ 16,847,000	$ 15,992,000
Capital leases		61,000	119,000
Term note		9,895,000	382,000
Total carrying amount of long-term debt		46,048,000	40,488,000
Less current portion		(5,959,000)	(4,059,000)
Long-term debt, net		40,089,000	36,429,000
Unsecured Subordinated Notes, interest rate	5.00%
Revolving Credit Facility [Member]
Line Of Credit Facility And Long Term Debt [Line Items]
Credit facility		14,439,000	20,000,000
Foreign Credit Facility [Member]
Line Of Credit Facility And Long Term Debt [Line Items]
Credit facility		$ 4,806,000	$ 3,995,000