CONSOLIDATED INCOME STATEMENTS (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales	$ 235,261	$ 206,749	$ 670,451	$ 590,874
Cost of goods sold - materials	69,362	63,373	195,984	179,776
Personnel costs	82,127	70,108	242,030	209,429
Other operating expenses	44,394	42,507	126,387	118,531
Relocation expenses	272	7,975	689	14,220
Depreciation and amortization	7,864	4,471	22,852	13,242
Income from operations	31,242	18,315	82,509	55,676
Interest expense	7,796	7,636	23,966	22,684
Income before taxes	23,446	10,679	58,543	32,992
Provision for income taxes	8,034	3,755	21,487	12,303
Net income	$ 15,412	$ 6,924	$ 37,056	$ 20,689
Basic Per Common Share Data
Net income (in dollars per share)	$ 0.46	$ 0.21	$ 1.11	$ 0.64
Shares used to compute basic per common share amounts (in shares)	33,571,967	32,377,237	33,477,951	32,097,084
Diluted Per Common Share Data
Net income (in dollars per share)	$ 0.45	$ 0.21	$ 1.08	$ 0.63
Shares used to compute diluted per common share amounts (in shares)	34,347,215	32,866,487	34,215,105	32,784,479