Statements of Cash Flows Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Income (Loss) Attributable to Parent	$ 1,848	$ (724)
Amortization	515	672
Amortization of Financing Costs and Discounts	914	822
Depreciation	898	1,038
Foreign Currency Transaction Gain (Loss), before Tax	638	(127)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset	(396)	75
Share-based Compensation	4,410	1,445
Provision for doubtful accounts and inventory valuation	923	353
Increase (Decrease) in Deferred Income Taxes	0	65
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(587)	11,987
Net Cash Provided by (Used in) Operating Activities	9,163	15,606
Payments to Acquire Marketable Securities	(60,458)	(69,634)
Proceeds from Sale and Maturity of Marketable Securities	51,381	29,018
Payments to Acquire Property, Plant, and Equipment	(1,072)	(390)
Net Cash Provided by (Used in) Investing Activities	(10,149)	(41,006)
Payments for Repurchase of Common Stock	(6,786)	0
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options	61	93
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	93	49
Net Cash Provided by (Used in) Financing Activities	(6,632)	142
Effect of Exchange Rate on Cash and Cash Equivalents	(131)	74
Cash and Cash Equivalents, Period Increase (Decrease)	(7,749)	(25,184)
Cash and Cash Equivalents, at Carrying Value	35,365	55,606
Income Taxes Paid	356	567
Interest Paid	$ 1,125	$ 1,125