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Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Current assets:    
Cash and cash equivalents $ 18,819 $ 12,085
Certificates of deposit 7,223 8,110
Investments held to maturity at amortized cost 16,079 16,040
Accounts receivable, net 54,785 39,063
Income tax receivable 0 1,073
Notes receivable 30 29
Inventories, net 37,240 32,140
Prepaid expenses and other 790 304
Deferred tax assets 7,093 4,779
Total current assets 142,059 113,623
Property, plant and equipment:    
Land 2,233 1,417
Buildings 64,098 61,821
Machinery and equipment 128,459 119,439
Furniture and fixtures 10,230 9,748
Total property, plant and equipment 205,020 192,425
Less: Accumulated depreciation 112,995 105,142
Property, plant and equipment, net 92,025 87,283
Certificates of deposit 6,720 2,638
Investments held to maturity at amortized cost 5,845 10,981
Note receivable 860 919
Total assets 247,509 215,444
Current liabilities:    
Revolving credit facility 0 0
Accounts payable 13,602 7,779
Accrued liabilities 39,922 28,550
Total current liabilities 53,524 36,329
Deferred revenue 920 585
Deferred tax liabilities 12,377 14,424
Donations 1,645 0
Commitments and contingencies      
Stockholders' equity:    
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued 0 0
Common stock, $.004 par value, 100,000,000 shares authorized, 54,460,266 and 55,067,031 issued and outstanding at September 30, 2014 and December 31, 2013, respectively 218 [1] 221 [1]
Additional paid-in capital 0 0
Retained earnings 178,825 [1] 163,885 [1]
Total stockholders' equity 179,043 164,106
Total liabilities and stockholders' equity $ 247,509 $ 215,444
[1] Reflects three-for-two stock split effective July 16, 2014