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Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Current assets:    
Cash and cash equivalents $ 9,916 $ 8,978
Marketable securities 44,407 29,307
Accounts receivable, net of allowance for doubtful accounts of approximately $988 as of June 30, 2013 and $929 as of December 31, 2012 26,982 27,654
Inventories 17,355 16,203
Prepaid expenses and other assets 4,756 3,264
Deferred income taxes 817 1,146
Total current assets 104,233 86,552
Property and equipment, less accumulated depreciation of $34,032 as of June 30, 2013 and $31,657 as of December 31, 2012 36,283 36,733
Intangible assets, less accumulated amortization of $1,121 as of June 30, 2013 and $826 as of December 31, 2012 14,802 1,684
Goodwill 16,966 4,712
Other non-current assets 5,205 4,363
Deferred income taxes 566 3,524
Total assets 178,055 137,568
Current liabilities:    
Accounts payable 7,144 7,086
Accrued compensation and employee-related expenses 5,542 6,785
Accrued other 7,126 4,595
Accrued product warranty costs 970 814
Deferred revenue 7,037 1,892
Current portion of long-term debt 1,109 138
Total current liabilities 28,928 21,310
Other long-term liabilities 1,312 140
Line of credit 30,000 7,000
Long-term debt excluding current portion 6,671 3,414
Total liabilities 66,911 31,864
Stockholders' equity:    
Preferred stock, $0.01 par value. Authorized 1,000,000 shares; none issued 0 0
Common stock, $0.01 par value. Authorized 30,000,000 shares, 16,822,549 and 16,563,836 shares issued at June 30, 2013 and December 31, 2012; and 15,163,558 and 14,904,845 shares outstanding at June 30, 2013 and December 31, 2012, respectively 168 166
Additional paid-in capital 114,642 111,514
Retained earnings 10,819 7,307
Accumulated other comprehensive loss (1,335) (133)
Less: treasury stock at cost, common stock, 1,658,991 shares as of June 30, 2013 and December 31, 2012 (13,150) (13,150)
Total stockholders' equity 111,144 105,704
Total liabilities and stockholders' equity $ 178,055 $ 137,568