Consolidated Statements of Comprehensive Income (USD $)
Share data in Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Revenues $ 244,293,000 [1] $ 235,639,000 [2] $ 251,743,000 [3]
Cost of sales 161,543,000 193,583,000 197,069,000
Gross profit 82,750,000 42,056,000 54,674,000
Selling, general, and administrative expense 25,293,000 21,737,000 23,050,000
Research and development expense 2,407,000 2,209,000 1,588,000
Operating income 48,013,000 12,626,000 54,359,000
Interest income 18,000 32,000 43,000
Interest expense (1,658,000) (1,335,000) (2,109,000)
Other expense, net (394,000) (365,000) (408,000)
Income before income taxes 45,979,000 10,958,000 51,885,000
Provision for income taxes 15,464,000 6,895,000 17,728,000
Net income 30,515,000 4,063,000 34,157,000
Other comprehensive income (loss):      
Energy swap adjustment, net of tax expense (benefit) of $81, $241, and ($486), respectively 151,000 448,000 (925,000)
Pension benefits adjustment, net of tax expense (benefit) of $1,920, $165 and ($1,306), respectively 3,565,000 307,000 (2,071,000)
Comprehensive income 34,231,000 4,818,000 31,161,000
Basic earnings per share (See Note 13) (in Dollars per share) $ 1.50 $ 0.21 $ 1.77
Weighted average common shares outstanding (in Shares) 19,913 19,420 19,238
Diluted earnings per share (See Note 13) (in Dollars per share) $ 1.45 $ 0.20 $ 1.71
Weighted average common shares and potentialcommon share equivalents outstanding (in Shares) 20,634 19,874 19,923
Charges related to U.S. Attorney investigation   7,990,000 545,000
Impairment of intangible assets 266,000 129,000  
Plant Closure [Member]
     
Loss (gain) on disposition of assets 6,597,000    
Disposal of Assets [Member]
     
Loss (gain) on disposition of assets 174,000 (2,635,000) 2,096,000
Oil Spill [Member]
     
Other comprehensive income (loss):      
Proceeds from Catastrophe     (26,177,000)
Storm 2005 [Member]
     
Other comprehensive income (loss):      
Proceeds from Catastrophe     $ (787,000)
[1] Excludes revenue from internal customers of $1.3 million for fish oil that was transferred from the animal nutrition segment to the human nutrition segment at cost.
[2] Excludes revenue from internal customers of $1.6 million for fish oil that was transferred from the animal nutrition segment to the human nutrition segment at cost.
[3] Excludes revenue from internal customers of $0.4 million for fish oil that was transferred from the animal nutrition segment to the human nutrition segment at cost.