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Concentrations - Additional Information (Detail)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Concentration Risk [Line Items] | |||
| Percentage of sales concentration to one customer | 3.00% | 19.00% | 38.00% |
| Maximum account receivable with individual customer | Less than 10% | Less than 10% | |
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Waterlase Systems
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 63.00% | 60.00% | 32.00% |
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Diode Systems
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 11.00% | 19.00% | 30.00% |
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Consumables And Other
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 10.00% | 11.00% | 16.00% |
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Imaging Systems
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 6.00% | 0.00% | 0.00% |
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Services
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 10.00% | 9.00% | 16.00% |
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License Fees and Royalties
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| Concentration Risk [Line Items] | |||
| Percentage of net revenue | 0.00% | 1.00% | 6.00% |
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Hsic Worldwide
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| Concentration Risk [Line Items] | |||
| Percentage of sales concentration to one customer | 3.00% | 19.00% | 38.00% |