Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Components Of Long-Term Debt) (Details)

v3.7.0.1
Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($)
$ in Thousands
May 28, 2010
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Line Of Credit Facility And Long Term Debt [Line Items]        
5% Senior Subordinated Notes due 2017 (refer to Note 15)       $ 22,610
Term note       102
Unamortized discount     $ (814) (814)
Total carrying amount of long-term debt       21,898
Less current portion       $ (21,898)
Unsecured Subordinated Notes, interest rate 5.00%      
Revolving Credit Facility [Member]        
Line Of Credit Facility And Long Term Debt [Line Items]        
Credit facility   $ 0    
Government Entity And Other Financial Institutions [Member]        
Line Of Credit Facility And Long Term Debt [Line Items]        
Interest rate of term note   0.75%