Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$ 7,993	$ 982
Adjustments to reconcile net income to cash flows:
Depreciation and amortization	5,297	5,883
Increase in inventory reserve	1,406	923
Stock based compensation	1,077	914
Deferred income tax provision/(benefit)	2,076	(572)
Other	658	616
Changes in assets and liabilities:
Trade receivables	35,763	32,048
Inventories	(28,963)	(9,951)
Prepaid expenses and other current assets	1,062	(2,042)
Accounts payable and other current liabilities	(2,167)	(3,983)
Deferred revenue	12,557	1,074
Other non-current assets and liabilities	(870)	(441)
Discontinued operations:
Net cash used in discontinued operations	(517)	(869)
Net cash provided by operating activities	35,372	24,582
Cash flows from investing activities:
Capital expenditures	(12,641)	(7,586)
Proceeds from sale of assets	653	470
Advances to partially-owned affiliates	(57)	(472)
Net cash used in investing activities	(12,045)	(7,588)
Long-term debt activity:
Borrowings	0	1,500
Repayments	0	(20,750)
Proceeds from stock options exercised	1,540	1,316
Other	60	0
Net cash provided by/(used in) financing activities	1,600	(17,934)
Effect of exchange rate changes on cash and cash equivalents	(2,535)	(25)
Net increase/(decrease) in cash and cash equivalents	22,392	(965)
Cash and cash equivalents at beginning of period	45,518	22,745
Cash and cash equivalents at end of period	$ 67,910	$ 21,780