Assets Held For Sale	12 Months Ended
Assets Held For Sale	Dec. 31, 2011
Assets Held For Sale [Abstract]
Assets Held For Sale	6. Assets Held for Sale We had assets held for sale of $46,000 and $462,000 at December 31, 2011 and 2010, respectively, comprised of excimer and femtosecond lasers. Assets held for sale are recorded as a component of "Prepaid expenses and other" on the Consolidated Balance Sheets. In January 2012, we disposed of remaining assets held for sale as of December 31, 2011 at a gain of $44,000. During 2011, we sold some of our excimer and femtosecond lasers held for sale with a combined net book value of $416,000 for total cash proceeds of approximately $917,000, resulting in a gain of approximately $501,000, before tax. During 2010, we sold some of our excimer and femtosecond lasers held for sale with a combined net book value of $743,000 for total cash proceeds of approximately $1.5 million and notes receivable of $835,000, resulting in a gain of approximately $1.6 million, before tax. We measured assets held for sale at December 31, 2011 and 2010 at the lower of cost or fair value less cost to sell. We based the fair value and cost to sell estimates on corroborative market data, which is a Level 2 input under U.S. GAAP.

Tabular disclosure of long lived assets held for sale. Disclosure may include the description of the facts and circumstances leading to the expected disposal, manner and timing of disposal, the carrying value of the assets held for sale, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss).

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