Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net income (loss)	$ (1,073)	$ 44,208	$ 24,472
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	22,776	22,521	22,344
Amortization of debt costs	1,239	471	248
Provision for doubtful accounts	11,532	8,746	7,335
Deferred income taxes	936	178	(4,409)
Share-based compensation	6,648	8,138	10,752
Provision for inventory obsolescence	5,463	7,376	8,760
Loss on refinancing of credit facility		550
Gain on interest rate swap		(1,254)	(1,852)
Net gain on sale of vascular operations		(12,019)
Tax benefit on non-qualified stock options	(1,737)	(2,222)	(25)
Other	2,823	(1,778)	2,541
Changes in operating assets and liabilities, net of effect of sale of vascular operations and acquisitions:
Trade accounts receivable	(25,818)	(14,770)	(23,858)
Inventories	(13,812)	(222)	(8,941)
Escrow receivable	(32,562)	(2,049)
Prepaid expenses and other current assets	(4,057)	(7,214)	(12)
Trade accounts payable	576	(2,863)	(1,310)
Charges related to U.S. Government resolutions	88,463
Other current liabilities	3,384	(5,289)	14,537
Net cash provided by operating activities	64,781	42,508	50,582
Cash flows from investing activities:
Capital expenditures for property, plant and equipment	(24,965)	(25,844)	(20,915)
Capital expenditures for intangible assets	(793)	(517)	(1,083)
Payment made in connection with acquisition	(5,250)
Investment related to collaborative arrangement			(2,000)
Proceeds from sale of investments held at cost			1,711
Net proceeds from the sale of vascular operations		24,215
Net cash used in investing activities	(31,008)	(2,146)	(22,287)
Cash flows from financing activities:
Net proceeds from issuance of common shares	20,113	7,854	70
Payment of refinancing fees and debt issuance costs	(758)	(4,266)
Repayments of long-term debt	(7,500)	(36,269)	(28,323)
Proceeds from (repayment of) bank borrowings, net	(2,561)	1,723	248
Changes in restricted cash	(24,178)	(11,290)	(612)
Cash payment for purchase of minority interest in subsidiary	(517)		(1,143)
Tax benefit on non-qualified stock options	1,737	2,222	25
Repurchase of equity			(220)
Net cash used in financing activities	(13,664)	(40,026)	(29,955)
Effect of exchange rates changes on cash	(463)	(103)	394
Net increase (decrease) in cash and cash equivalents	19,646	233	(1,266)
Cash and cash equivalents at the beginning of the year	13,561	13,328	14,594
Cash and cash equivalents at the end of the year	33,207	13,561	13,328
Cash paid during the year for:
Interest	17,088	16,032	26,724
Income taxes	$ 26,227	$ 29,743	$ 17,665