CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
CURRENT ASSETS
Cash and cash equivalents	$ 7,216	$ 19,211
Restricted cash		3,120
Accounts receivable, less allowance for doubtful accounts of $8,358 and $7,562 in 2013 and 2012, respectively	176,663	165,668
Inventories	144,374	127,295
Prepaid expenses, other assets, and income taxes receivable	14,560	15,673
Deferred income taxes	31,115	27,685
Total current assets	373,928	358,652
PROPERTY, PLANT AND EQUIPMENT
Land	794	794
Buildings	8,896	8,896
Furniture and fixtures	20,382	19,582
Machinery and equipment	61,178	60,364
Equipment leased to third parties under operating leases	33,224	34,827
Leasehold improvements	81,708	74,615
Computer and software	99,974	98,186
Total property, plant and equipment, gross	306,156	297,264
Less accumulated depreciation	190,193	182,803
Total property, plant and equipment, net	115,963	114,461
INTANGIBLE ASSETS
Goodwill	678,215	674,774
Customer list and other intangible assets, less accumulated amortization of $25,607 and $20,643 in 2013 and 2012, respectively	58,638	64,281
Total intangible assets, net	736,853	739,055
OTHER ASSETS
Debt issuance costs, net	8,994	14,033
Other assets	12,261	11,126
Total other assets	21,255	25,159
TOTAL ASSETS	1,247,999	1,237,327
CURRENT LIABILITIES
Current portion of long-term debt	13,673	11,082
Accounts payable	32,339	28,923
Accrued expenses	30,391	22,357
Accrued interest payable	5,772	3,041
Accrued compensation related costs	33,991	41,784
Total current liabilities	116,166	107,187
LONG-TERM LIABILITIES
Long-term debt, less current portion	457,384	509,564
Deferred income taxes	76,480	77,730
Other liabilities	40,869	39,752
Total liabilities	690,899	734,233
COMMITMENTS AND CONTINGENCIES (Note H)
SHAREHOLDERS' EQUITY
Common stock, $.01 par value; 60,000,000 shares authorized, 36,032,368 and 35,617,884 shares issued and outstanding at 2013 and 2012, respectively	360	356
Additional paid-in capital	288,860	280,084
Accumulated other comprehensive loss	(1,919)	(1,919)
Retained earnings	270,455	225,229
Shareholders' equity, excluding treasury stock	557,756	503,750
Treasury stock at cost (141,154 shares at 2013 and 2012)	(656)	(656)
Total shareholders' equity	557,100	503,094
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,247,999	$ 1,237,327