Consolidated Condensed Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating Activities:
Net income	$ 9,909	$ 6,097
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	7,934	7,521
Deferred tax provision	(740)	821
Stock compensation	491	292
Defined benefit plan expense	(53)	(105)
Provision of doubtful accounts	434
Gain on revaluation of financial derivatives	(1,244)	(2,471)
Loss (gain) on equity investment	(176)	198
Loss (gain) on sale of property, plant and equipment	3	(8)
Excess tax benefit from equity awards		(459)
Changes in operating assets and liabilities:
Accounts receivable	(7,765)	(5,581)
Inventory	427	(2,498)
Prepaid expenses and other assets	(1,511)	(1,659)
Accounts payable	(160)	581
Accrued liabilities	2,490	3,737
Net cash provided by operating activities	10,039	6,466
Investing Activities:
Purchase of non-controlling interest	(40,302)
Proceeds from the sale of property, plant and equipment	1	14
Purchase of property and equipment	(6,116)	(3,029)
Loan to equity investment		(350)
Patent costs		(14)
Net cash used in investing activities	(46,417)	(3,379)
Financing Activities:
Borrowing of debt	40,441	41
Repayments of debt	(5,182)	(3,613)
Distributions paid to non-controlling interests		(173)
Proceeds from public offering of common stock		75,547
Excess tax benefit from equity awards		459
Cash paid to Series C Preferred Stock Holders	(8,268)	(55)
Proceeds from the exercise of Common Stock options	1,487	271
Net cash provided by financing activities	28,478	72,477
Foreign currency effect	(2,275)	1,198
Net increase (decrease) in cash and cash equivalents	(10,175)	76,762
Cash and cash equivalents at beginning of period	58,152	23,839
Cash and cash equivalents at end of period	47,977	100,601
Supplemental disclosure of cash flow information:
Cash paid for taxes	1,519	536
Cash paid for interest	474	874
Supplemental disclosure of non-cash transactions:
Common stock issued to Board of Directors and employees	269	147
Issuance of Common Stock to non-controlling interest	42,534
Issuance of Common Stock for Series C Preferred Stock conversion	$ 1,655