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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
CURRENT ASSETS: |  |
Trade receivables, allowance for uncollectible accounts | $ 742 | $ 464
STOCKHOLDERS' EQUITY: |  |
Preferred stock, shares authorized | 5,000 | 5,000
Preferred stock, shares issued | 0 | 0
Common stock, no par value | $ 0 | $ 0
Common stock, shares authorized | 100,000 | 100,000
Common stock, shares issued | 42,082 | 42,008
Developed Technology Rights [Member] |  |
OTHER ASSETS: |  |
Intangible assets, accumulated amortization | 6,392 | 4,759
Other Intangible Assets [Member] |  |
OTHER ASSETS: |  |
Intangible assets, accumulated amortization | $ 12,116 | $ 10,215

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