Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 317,047	$ 217,922
Short-term investments	221,832	273,591
Restricted cash	851	577
Accounts receivable, net	95,125	95,038
Inventories	90,729	113,434
Prepaid expenses and other current assets	28,577	40,756
Assets of discontinued segment held for sale		2,341
Deferred income taxes	10,298	10,885
Total current assets	764,459	754,544
Property, plant and equipment at cost, net	97,068	86,067
Goodwill	55,828	55,828
Intangible assets, net	23,483	25,882
Other assets	9,137	13,742
Total assets	949,975	936,063
Current liabilities:
Accounts payable	32,652	40,398
Accrued expenses and other current liabilities	95,168	107,656
Deferred profit	10,301	10,275
Income taxes payable	1,350	3,532
Liabilities of discontinued segment held for sale	5,359	5,359
Current portion of long-term debt	258	248
Total current liabilities	145,088	167,468
Deferred income taxes	5,023	5,029
Long-term debt	2,275	2,406
Other liabilities	324	640
Equity:
Preferred stock, 500,000 shares authorized; no shares issued and outstanding
Common stock; $.01 par value; authorized 120,000,000 shares; 39,143,126 and 38,768,436 shares issued and outstanding in 2012 and 2011, respectively	385	435
Additional paid-in-capital	697,303	688,353
Retained earnings	93,425	265,317
Accumulated other comprehensive income	6,152	6,590
Less: treasury stock, at cost; 5,278,828 shares in 2011		(200,175)
Total equity	797,265	760,520
Total liabilities and equity	$ 949,975	$ 936,063