CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 37,478	$ 42,789
Short-term investments	5,496	13,607
Accounts receivable, net	31,564	33,273
Inventories, net	33,515	29,937
Deferred income taxes	3,574	4,783
Prepaids and other	5,193	4,388
Total current assets	116,820	128,777
Property and equipment, net	29,452	26,229
Intangible assets, net	63,049	65,218
Deferred income taxes	14,360	14,360
Long-term investments	0	3,000
Goodwill	50,829	51,128
Other	9,129	8,463
Total assets	283,639	297,175
Current liabilities:
Accounts payable	6,899	9,650
Accrued liabilities	11,442	12,866
Deferred revenue	4,354	4,134
Current portion of long-term debt	604	1,138
Total current liabilities	23,299	27,788
Long-term debt	1,063	1,702
Deferred revenue	2,663	2,933
Other	6,068	5,085
Total liabilities	33,093	37,508
Stockholders' equity:
Common stock, $.001 par value, 200,000,000 shares authorized; issued and outstanding: 40,461,327 shares at June 30, 2013; 40,824,932 shares at December 31, 2012	40	41
Preferred stock, $.001 par value, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Additional paid-in capital	283,711	293,392
Accumulated other comprehensive income	478	1,101
Accumulated deficit	(33,683)	(34,867)
Total stockholders' equity	250,546	259,667
Total liabilities and stockholders' equity	$ 283,639	$ 297,175