Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
OPERATING ACTIVITIES:
Net loss	$ (4,681)	$ (18,717)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	4,966	5,826
Amortization of intangible assets	0	102
Loss on lease due to restructuring	87	1,208
Pension cost (benefit)	318	(40)
Stock-based compensation expense	2,662	1,850
Gain on sale of property and equipment	(131)	0
Gain on sale of product line	(6,657)	0
Unrealized loss on foreign currency exchange rates	39	2,182
Release of tax liability	(1,518)	0
Provision for losses on accounts receivable	67	16
Provision for losses on inventory	139	189
Provision for warranties	307	592
Changes in operating assets and liabilities:
Trade and other accounts receivable	14,831	12,321
Inventories, net	(5,186)	3,771
Prepaid expenses and other assets	(628)	(383)
Pension asset	(297)	(357)
Accounts payable and accrued liabilities	(10,719)	(8,734)
Deferred revenue and customer deposits	249	167
Accrued employee compensation	(495)	(760)
Deferred tax liability	(10)	2,085
Other long-term liabilities	(331)	(194)
Net cash provided by (used in) operating activities	(6,988)	1,124
INVESTING ACTIVITIES:
Purchases of property and equipment	(3,629)	(2,217)
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	16,990	(2,217)
FINANCING ACTIVITIES:
Principal payments on long-term debt and short-term borrowings	(21)	(12,900)
Proceeds from long-term debt and short-term borrowings	0	2,946
Proceeds from sale of common stock, net of offering costs	0	9,594
Proceeds from issuance of common stock under equity compensation plans	613	482
Restricted cash - release of compensating balance	300	0
Net cash provided by financing activities	892	122
Effect of exchange rate changes on cash and cash equivalents	399	1,270
Decrease in cash and cash equivalents	11,293	299
Cash and cash equivalents, beginning of period	24,382	24,732
Cash and cash equivalents, end of period	$ 35,675	$ 25,031