CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 9,860	$ 19,211
Restricted cash		3,120
Net accounts receivable, less allowance for doubtful accounts of $10,022 and $7,526 in 2013 and 2012, respectively	185,769	165,668
Inventories	141,518	127,295
Prepaid expenses, other current assets and income taxes receivable	15,519	15,673
Deferred income taxes	30,298	27,685
Total current assets	382,964	358,652
PROPERTY, PLANT AND EQUIPMENT
Land	794	794
Buildings	15,397	8,896
Furniture and fixtures	15,855	19,582
Machinery and equipment	61,707	60,364
Equipment leased to third parties under operating leases	34,142	34,827
Leasehold improvements	85,176	74,615
Computer and software	88,950	98,186
Total property, plant and equipment, gross	302,021	297,264
Less accumulated depreciation and amortization	175,223	182,803
Total property, plant and equipment, net	126,798	114,461
INTANGIBLE ASSETS
Goodwill	681,547	674,774
Patents and other intangible assets, less accumulated amortization of $27,375 and $20,643 in 2013 and 2012, respectively	58,021	64,281
Total intangible assets, net	739,568	739,055
OTHER ASSETS
Debt issuance costs, net	8,564	14,033
Other assets	13,766	11,126
Total other assets	22,330	25,159
TOTAL ASSETS	1,271,660	1,237,327
CURRENT LIABILITIES
Current portion of long-term debt	15,998	11,082
Accounts payable	36,729	28,923
Accrued expenses and other current liabilities	24,923	22,357
Accrued interest payable	1,898	3,041
Accrued compensation related costs	36,331	41,784
Total current liabilities	115,879	107,187
LONG-TERM LIABILITIES
Long-term debt, less current portion	452,261	509,564
Deferred income taxes	76,545	77,730
Other liabilities	46,755	39,752
Total liabilities	691,440	734,233
COMMITMENTS AND CONTINGENCIES (Note H)
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 60,000,000 shares authorized, 36,113,202 shares and 35,617,884 shares issued and outstanding in 2013 and 2012, respectively	361	356
Additional paid-in capital	292,722	280,084
Accumulated other comprehensive loss	(1,020)	(1,919)
Retained earnings	288,813	225,229
Shareholders' equity, excluding treasury stock	580,876	503,750
Treasury stock at cost (141,154 shares)	(656)	(656)
Total shareholders' equity	580,220	503,094
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,271,660	$ 1,237,327