Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 55,509	$ 16,683
Receivables, net of allowance for doubtful accounts of $60 and $149, respectively	8,388	8,457
Inventories	10,873	12,565
Deferred income taxes	3,148	2,987
Prepaid expenses and other assets	1,369	740
Total current assets	79,287	41,432
Long-term inventories, net	1,955	1,905
Property and equipment, net	1,708	2,338
Intangibles, net	4,258	2,690
Goodwill	3,472	1,153
Deferred income taxes	1,195	0
Other assets	64	41
Total assets	91,939	49,559
Current Liabilities:
Accounts payable	2,302	2,814
Accrued liabilities	2,143	2,234
Income taxes payable	14,782	300
Deferred product revenue	3,593	3,404
Total current liabilities	22,820	8,752
Deferred income taxes	0	101
Deferred rent	422	494
Other long-term liabilities	2,029	548
Total liabilities	25,271	9,895
Shareholders' equity:
Common stock, par value $0.001, 50,000,000 shares authorized, 9,163,462 and 9,098,152 shares issued and outstanding as of December 31, 2012 and 2011, respectively	9	9
Additional paid-in capital	40,430	40,073
Retained earnings (accumulated deficit)	26,229	(418)
Total shareholders' equity	66,668	39,664
Total liabilities and shareholders' equity	$ 91,939	$ 49,559