| Financial Statement Details |
3. Financial Statement Details
Short Term Marketable Securities, Available for Sale
Short-term investment securities, consisting solely of debt securities with contractual maturities of less than one year, were as follows (in thousands):
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December 31, 2011 |
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Amortized
Cost |
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Gross
Unrealized
Gains |
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Gross
Unrealized
Losses |
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Estimated
Market
Value |
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U.S. government agencies |
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$ |
61,890 |
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$ |
11 |
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$ |
(5 |
) |
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$ |
61,896 |
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Commercial paper |
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7,497 |
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0 |
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0 |
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7,497 |
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Corporate debt |
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9,972 |
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2 |
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(9 |
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9,965 |
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Total |
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$ |
79,359 |
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$ |
13 |
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$ |
(14 |
) |
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$ |
79,358 |
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December 31, 2010 |
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Amortized
Cost |
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Gross
Unrealized
Gains |
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Gross
Unrealized
Losses |
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Estimated
Market
Value |
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U.S. government agencies |
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$ |
32,231 |
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$ |
2 |
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$ |
(10 |
) |
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$ |
32,223 |
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Commercial paper |
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4,996 |
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0 |
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0 |
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4,996 |
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Corporate debt |
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5,006 |
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1 |
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(2 |
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5,005 |
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Total |
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$ |
42,233 |
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$ |
3 |
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$ |
(12 |
) |
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$ |
42,224 |
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Accounts Receivable
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December 31, |
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2011 |
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2010 |
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Accounts receivable |
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$ |
13,192 |
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$ |
7,174 |
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Less allowance for doubtful accounts, sales returns and discounts |
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(645 |
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(503 |
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Total |
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$ |
12,547 |
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$ |
6,671 |
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Inventory
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December 31, |
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2011 |
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2010 |
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Raw materials |
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$ |
4,577 |
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$ |
5,041 |
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Work in process |
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601 |
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575 |
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Finished goods |
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2,993 |
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2,496 |
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Total |
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$ |
8,171 |
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$ |
8,112 |
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Property and Equipment
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December 31, |
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2011 |
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2010 |
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Furniture and fixtures |
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$ |
2,453 |
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$ |
2,462 |
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Computer equipment |
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9,191 |
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6,635 |
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Machinery and equipment |
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12,898 |
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10,782 |
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Leasehold improvements |
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7,021 |
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5,908 |
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Total |
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31,563 |
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25,787 |
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Accumulated depreciation and amortization |
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(16,544 |
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(15,024 |
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Property and equipment, net |
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$ |
15,019 |
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$ |
10,763 |
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Depreciation and amortization expense for the years ended December 31, 2011, 2010, and 2009 was $3.8 million, $2.4 million, and $2.4 million, respectively.
Accounts Payable and Accrued Liabilities
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December 31, |
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2011 |
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2010 |
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Accounts payable trade |
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$ |
2,807 |
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$ |
1,758 |
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Accrued tax, audit, and legal fees |
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|
735 |
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|
783 |
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Clinical trials |
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|
161 |
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134 |
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Accrued other including warranty |
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2,643 |
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2,675 |
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Total |
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$ |
6,346 |
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$ |
5,350 |
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Accrued Payroll and Related Expenses
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December 31, |
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2011 |
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2010 |
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Accrued paid time off |
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$ |
1,895 |
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$ |
1,570 |
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Accrued wages, bonus and taxes |
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4,308 |
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3,596 |
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Other accrued employee benefits |
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|
601 |
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|
564 |
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Total |
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$ |
6,804 |
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$ |
5,730 |
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Accrued Warranty
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Year Ended December 31, |
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2011 |
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2010 |
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Beginning balance |
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$ |
435 |
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$ |
129 |
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Charges to costs and expenses |
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1,741 |
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2,178 |
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Costs incurred |
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(1,870 |
) |
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(1,872 |
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Ending balance |
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$ |
306 |
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$ |
435 |
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