CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 19,211	$ 42,896
Restricted Cash	3,120
Accounts receivable, less allowance for doubtful accounts of $21,379 and $22,028 in 2012 and 2011, respectively	165,668	138,826
Inventories	127,295	112,305
Prepaid expenses, other current assets and income taxes receivable	15,673	17,015
Deferred income taxes	27,685	20,648
Total current assets	358,652	331,690
PROPERTY, PLANT AND EQUIPMENT
Land	794	794
Buildings	8,896	4,400
Furniture and fixtures	19,582	17,281
Machinery and equipment	60,364	56,137
Equipment leased to third parties under operating leases	34,827	33,830
Leasehold improvements	74,615	65,245
Computer and software	98,186	81,775
Total property, plant and equipment, gross	297,264	259,462
Less accumulated depreciation and amortization	182,803	154,690
Total property, plant and equipment, net	114,461	104,772
INTANGIBLE ASSETS
Goodwill	674,774	609,484
Patents and other intangible assets, less accumulated amortization of $20,643 and $15,160 in 2012 and 2011, respectively	64,281	54,894
Total intangible assets, net	739,055	664,378
OTHER ASSETS
Debt issuance costs, net	14,033	17,485
Other assets	11,126	8,394
Total other assets	25,159	25,879
TOTAL ASSETS	1,237,327	1,126,719
CURRENT LIABILITIES
Current portion of long-term debt	11,082	8,065
Accounts payable	28,923	26,561
Accrued expenses	22,357	17,547
Accrued interest payable	3,041	3,040
Accrued compensation related costs	41,784	35,829
Total current liabilities	107,187	91,042
LONG-TERM LIABILITIES
Long-term debt, less current portion	509,564	499,968
Deferred income taxes	77,730	74,309
Other liabilities	39,752	32,818
Total liabilities	734,233	698,137
COMMITMENTS AND CONTINGENCIES (Note H)
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 60,000,000 shares authorized, 35,617,884 shares and 35,127,230 shares issued and outstanding in 2012 and 2011, respectively	356	351
Additional paid-in capital	280,084	268,535
Accumulated other comprehensive loss	(1,919)	(1,185)
Retained earnings	225,229	161,537
Shareholders' equity, excluding treasury stock	503,750	429,238
Treasury stock at cost (141,154 shares)	(656)	(656)
Total shareholders' equity	503,094	428,582
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,237,327	$ 1,126,719