Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash and cash equivalents	$ 66,939	$ 78,850
Investment securities	52,153	14,507	[1]
Cash, cash equivalents and investment securities	119,092	93,357	[1]
Accounts receivable, net of allowance for doubtful accounts of $1,242 at September 30, 2011 and $742 at December 31, 2010	53,081	55,106	[1]
Inventories	43,363	44,056	[1]
Prepaid income taxes	8,478	687	[1]
Prepaid expenses and other current assets	8,005	9,574	[1]
Deferred income taxes	5,251	5,053	[1]
Total current assets	237,270	207,833	[1]
PROPERTY AND EQUIPMENT, net	86,718	83,545	[1]
Assets Held-for-sale	1,743	0
GOODWILL	1,478	1,478	[1]
INTANGIBLE ASSETS, net	11,712	14,806	[1]
DEFERRED INCOME TAXES	4,586	4,564	[1]
TOTAL ASSETS	343,507	312,226	[1]
CURRENT LIABILITIES:
Accounts payable	11,209	10,879	[1]
Accrued liabilities	12,877	14,629	[1]
Deferred revenue	0	254	[1]
Total current liabilities	24,086	25,762	[1]
COMMITMENTS AND CONTINGENCIES	0	0	[1]
DEFERRED INCOME TAXES	8,008	8,023	[1]
INCOME TAX LIABILITY	4,471	4,155	[1]
STOCKHOLDERS' EQUITY:
Convertible preferred stock, $1.00 par value Authorized-500 shares; Issued and outstanding - none	0	0	[1]
Common stock, $0.10 par value - Authorized-80,000 shares; Issued 14,855 shares at September 30, 2011 and December 31, 2010, outstanding 13,831 shares at September 30, 2011 and 13,659 shares at December 31, 2010	1,486	1,486	[1]
Additional paid-in capital	56,426	56,502	[1]
Treasury stock, at cost - 1,024 shares at September 30, 2011 and 1,196 shares at December 31, 2010	(36,734)	(41,428)	[1]
Retained earnings	285,617	258,790	[1]
Accumulated other comprehensive income (loss)	147	(1,064)	[1]
Total stockholders' equity	306,942	274,286	[1]
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 343,507	$ 312,226	[1]

[1] December 31, 2010 balances were derived from audited consolidated financial statements.