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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
OPERATING ACTIVITIES  
Net income$ 3,095$ 3,385
Adjustments to reconcile net income to net cash provided by operating activities:  
Depreciation and amortization696827
Stock-based compensation expense1,0901,233
Excess tax benefits for share-based payment(77) 
Deferred income tax benefit(16)(596)
(Increase) decrease in assets:  
Accounts receivable(912)62
Inventories(1,258)(2,985)
Prepaid expenses and other current assets1281,596
Income taxes receivable5586,376
Other non-current assets15458
Increase (decrease) in liabilities:  
Accounts payable2,7351,529
Income taxes payable397181
Accrued expenses and other liabilities186628
Other long-term liabilities(188)(183)
Net cash provided by operating activities6,58812,111
INVESTING ACTIVITIES  
Capital expenditures(142)(80)
Purchases of marketable securities(24,773)(21,999)
Sales of marketable securities5,8015,016
Maturities of marketable securities8,76011,670
Net cash used for investing activities(10,354)(5,393)
FINANCING ACTIVITIES  
Excess tax benefit for share-based payments77 
Cash paid for common stock purchased and retired(447)(244)
Proceeds received upon exercise of stock options546
Net cash used for financing activities(316)(238)
Net (decrease) increase in cash and cash equivalents(4,082)6,480
Cash and cash equivalents at beginning of period9,5352,573
Cash and cash equivalents at end of period5,4539,053
Supplemental information:  
Income tax payments (refunds), net$ 47$ (5,179)