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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 41,862 $ 38,753
Accounts receivable, net 11,640 8,534
Inventories, net 15,082 13,235
Deferred income taxes 2,493 2,493
Prepaid expenses and other 560 596
Total current assets 71,637 63,611
Other assets:    
Goodwill 23,742 23,742
Other noncurrent 602 573
Total other assets 24,344 24,315
Property and equipment:    
Land 4,928 4,928
Buildings 20,906 20,523
Equipment 61,406 57,799
Construction in progress 594 2,588
Property, Plant and Equipment, Gross, Total 87,834 85,838
Less accumulated depreciation 54,699 52,086
Net property and equipment 33,135 33,752
Total assets 129,116 121,678
Current liabilities:    
Accounts payable and accrued liabilities 11,536 9,705
Income taxes payable to affiliates 1,068 339
Other 25 6
Total current liabilities 12,629 10,050
Noncurrent liabilities:    
Deferred income taxes 6,617 6,900
Stockholders' equity:    
Preferred stock      
Additional paid-in capital 55,342 55,265
Retained earnings 54,404 49,339
Total stockholders' equity 109,870 104,728
Total liabilities and stockholders’ equity 129,116 121,678
Commitments and contingencies (Note 1)      
Class A Common Stock
   
Stockholders' equity:    
Common stock 24 24
Total stockholders' equity 24 24
Class B Common Stock
   
Stockholders' equity:    
Common stock 100 100
Total stockholders' equity $ 100 $ 100