Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 151,034	$ 117,639
Marketable securities	22,631	25,567
Accounts receivable, net of allowances of $6,282 and $6,796, respectively	101,412	132,485
Inventories, net of reserves of $15,753 and $13,614, respectively	87,611	80,283
Deferred income tax assets	9,027	9,014
Income taxes receivable	7,971	13,826
Other current assets	6,340	11,672
Total current assets	386,026	390,486
Property and equipment, net	38,779	42,338
OTHER ASSETS:
Deposits and other	9,326	8,959
Goodwill	46,515	46,515
Other intangible assets, net	39,299	43,438
Deferred income tax assets	1,708	1,642
Total assets	521,653	533,378
CURRENT LIABILITIES:
Accounts payable	50,343	44,828
Income taxes payable	5,872	3,310
Accrued payroll and employee benefits	11,229	9,184
Accrued warranty expense	7,758	8,433
Other accrued expenses	10,965	10,800
Customer deposits	7,404	14,689
Total current liabilities	93,571	91,244
LONG-TERM LIABILITIES:
Deferred income tax liabilities	6,471	6,475
Uncertain tax positions	16,404	16,404
Accrued warranty expense	7,117	6,286
Other long-term liabilities	19,614	5,630
Total liabilities	143,177	126,039
Commitments and contingencies (Note 16)
STOCKHOLDERS' EQUITY:
Preferred stock, $0.001 par value, 1,000 shares authorized, none issued and outstanding	0	0
Common stock, $0.001 par value, 70,000 shares authorized; 37,679 and 41,956 issued and outstanding, respectively	38	42
Additional paid-in capital	209,170	254,003
Retained earnings	140,499	124,767
Accumulated other comprehensive income	28,769	28,527
Total stockholders' equity	378,476	407,339
Total liabilities and stockholders' equity	$ 521,653	$ 533,378