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Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 31,960 $ 37,303
Receivables, less allowance for doubtful accounts of $473 at June 30, 2014 and $512 at December 31, 2013 17,622 17,032
Inventories 13,429 11,048
Prepaid expenses 1,681 690
Refundable income taxes 1,625 1,537
Deferred income taxes 1,256 1,222
Total current assets 67,573 68,832
Property, plant, and equipment 68,546 64,574
Less accumulated depreciation and amortization (40,755) (39,067)
Net property, plant, and equipment 27,791 25,507
Goodwill 7,322 7,322
Intangible assets, net 1,114 1,346
Other assets 5,084 2,013
Total assets 108,884 105,020
Current liabilities:    
Accounts payable 4,161 3,081
Accrued expenses 6,834 8,265
Current installments of long-term debt 985 976
Total current liabilities 11,980 12,322
Long-term debt, excluding current installments 2,372 2,867
Deferred income taxes 2,245 2,436
Retirement and other liabilities 1,589 1,805
Total liabilities 18,186 19,430
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $.01 par value. Authorized 1,000,000 shares; zero shares issued or outstanding      
Common stock, $.01 par value. Authorized 20,000,000 shares; issued and outstanding 7,054,173 at June 30, 2014, and 6,900,683 at December 31, 2013 71 69
Additional paid-in capital 21,475 20,291
Retained earnings 69,152 65,230
Total stockholders' equity 90,698 85,590
Total liabilities and stockholders' equity $ 108,884 $ 105,020