Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES:
Net loss	$ (11,536)	$ (20,166)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	7,416	8,633
Amortization of intangible assets	0	153
Loss on lease due to restructuring	87	1,208
Pension cost (benefit)	479	(60)
Stock-based compensation expense	3,759	2,906
Gain on sale of property and equipment	(131)	0
Impairment of property and equipment	155	0
Gain on sale of product line	(6,657)	0
Unrealized loss on foreign currency exchange rates	45	2,240
Release of tax liability	(1,518)	0
Provision for losses on accounts receivable	56	90
Provision for losses on inventory	226	424
Provision for warranties	444	854
Changes in operating assets and liabilities:
Trade and other accounts receivable	20,151	7,475
Inventories	(7,209)	3,672
Prepaid expenses and other assets	(1,288)	(899)
Pension asset	(441)	(487)
Accounts payable and accrued liabilities	(16,704)	1,423
Deferred revenue and customer deposits	11	508
Accrued employee compensation	(962)	(1,236)
Deferred tax liability	113	2,161
Other long-term liabilities	(479)	(369)
Net cash provided by (used in) operating activities	(13,983)	8,530
INVESTING ACTIVITIES:
Purchases of property and equipment	(4,689)	(2,779)
Proceeds from sale of property and equipment	133	0
Proceeds from sale of product line	20,486	0
Net cash provided by (used in) investing activities	15,930	(2,779)
FINANCING ACTIVITIES:
Principal payments on long-term debt and short-term borrowings	(33)	(18,833)
Proceeds from long-term debt and short-term borrowings	0	3,040
Proceeds from sale of common stock, net of offering costs	0	9,565
Proceeds from issuance of common stock under equity compensation plans	618	876
Restricted cash - release of compensating balance	300	(400)
Net cash provided by (used in) financing activities	885	(5,752)
Effect of exchange rate changes on cash and cash equivalents	588	82
Increase in cash and cash equivalents	3,420	81
Cash and cash equivalents, beginning of period	24,382	24,732
Cash and cash equivalents, end of period	$ 27,802	$ 24,813