CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 55,620	$ 42,896
Restricted cash	3,120
Accounts receivable, less allowance for doubtful accounts of $22,571 and $22,028 in 2012 and 2011, respectively	144,096	138,826
Inventories	126,937	114,086
Prepaid expenses, other assets, and income taxes receivable	17,643	17,015
Deferred income taxes	22,406	20,648
Total current assets	369,822	333,471
PROPERTY, PLANT AND EQUIPMENT
Land	794	794
Buildings	7,333	4,400
Furniture and fixtures	18,838	17,281
Machinery and equipment	59,109	56,137
Equipment leased to third parties under operating leases	34,565	33,830
Leasehold improvements	71,527	65,245
Computer and software	94,259	81,775
Total property, plant and equipment, gross	286,425	259,462
Less accumulated depreciation	175,507	154,690
Total property, plant and equipment, net	110,918	104,772
INTANGIBLE ASSETS
Goodwill	624,828	609,484
Patents and other intangible assets, net	58,134	54,894
Total intangible assets, net	682,962	664,378
OTHER ASSETS
Debt issuance costs, net	14,896	17,485
Other assets	8,655	8,394
Total other assets	23,551	25,879
TOTAL ASSETS	1,187,253	1,128,500
CURRENT LIABILITIES
Current portion of long-term debt	7,775	8,065
Accounts payable	27,902	26,561
Accrued expenses	20,227	18,247
Accrued interest payable	6,513	3,040
Accrued compensation related costs	30,624	35,829
Total current liabilities	93,041	91,742
LONG-TERM LIABILITIES
Long-term debt, less current portion	501,210	499,968
Deferred income taxes	74,820	74,309
Other liabilities	37,464	32,818
Total liabilities	706,535	698,837
COMMITMENTS AND CONTINGENCIES (Note H)
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 60,000,000 shares authorized, 35,547,875 and 34,927,515 shares issued and outstanding at 2012 and 2011, respectively	355	351
Additional paid-in capital	277,302	268,535
Accumulated other comprehensive loss	(1,185)	(1,185)
Retained earnings	204,902	162,618
Total shareholders' equity excluding treasury stock	481,374	430,319
Treasury stock at cost (141,154 shares)	(656)	(656)
Total shareholders' equity	480,718	429,663
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,187,253	$ 1,128,500