CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 25,915	$ 62,303	$ 10,968
Adjustments to reconcile net income to cash flows:
Depreciation and amortization	22,473	21,775	23,120
Non-cash deferred revenue	(10,093)	(238)	(973)
Increase in inventory reserve	2,329	2,790	1,637
Gain on sale of assets	(4,281)	(5)	25
Allowance for doubtful accounts	433	193	(103)
Stock based compensation included in net income	2,825	1,802	1,565
Deferred income tax provision	5,902	(40,712)	(721)
Equity in losses of partially-owned affiliates	2,262	1,766	1,621
Other	348	348	365
Changes in assets and liabilities:
Trade receivables	(27,707)	(6,310)	2,066
Inventories	(19,328)	(10,295)	(3,523)
Prepaid expenses and other current assets	(2,651)	(188)	729
Accounts payable and other current liabilities	10,107	3,134	6,247
Deferred revenue	18,644	10,748	1,497
Other non-current assets and liabilities	11,229	182	(5,597)
Discontinued operations:
Net cash used in discontinued operations	(1,533)	(3,747)	(601)
Net cash provided by operating activities	36,874	43,546	38,322
Cash flows from investing activities:
Capital expenditures	(57,320)	(18,156)	(15,008)
Proceeds from sale of assets	2,378	16	20
Advances to partially-owned affiliates	(1,655)	(2,047)	0
Acquisition of business and equity investment, net of cash acquired	0	0	(500)
Other	0	5	0
Net cash used in investing activities	(56,597)	(20,182)	(15,488)
Long-term debt activity (including current portion):
Borrowings	70,950	5,500	105,800
Repayments	(55,700)	(39,500)	(123,700)
Debt issuance costs	0	0	(1,541)
Proceeds from stock options exercised	3,224	1,355	145
Other	(301)	(22)	(340)
Net cash provided by/(used in) financing activities	18,173	(32,667)	(19,636)
Effect of exchange rate changes on cash and cash equivalents	744	933	(891)
Net (decrease)/increase in cash and cash equivalents	(806)	(8,370)	2,307
Cash and cash equivalents at beginning of year	23,551	31,921	29,614
Cash and cash equivalents at end of year	22,745	23,551	31,921
Supplemental disclosure:
Interest paid, net of capitalized interest	2,325	2,556	2,258
Income taxes paid, net of refunds received	$ 7,211	$ 5,068	$ 8,520