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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
OPERATING ACTIVITIES:    
Net loss $ (20,517) $ (4,681)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 4,407 4,966
Amortization of intangible assets 202 0
Loss on lease due to restructuring 0 87
Pension and employee severance obligation cost 277 318
Stock-based compensation expense 3,792 2,662
Gain on sale of property and equipment 0 (131)
Gain on sale of product line 0 (6,657)
Unrealized (gain) loss on foreign currency exchange rates (22) 39
Release of tax liability 0 (1,518)
Provision for losses on accounts receivable 2 67
Provision for losses on inventory 828 139
Provision for warranties 209 307
Changes in operating assets and liabilities:    
Trade and other accounts receivable (6,751) 14,831
Inventories 6,057 (5,186)
Prepaid expenses and other assets (599) (628)
Pension asset (305) (297)
Accounts payable and accrued liabilities 4,714 (10,719)
Deferred revenue and customer deposits 1,351 249
Accrued employee compensation 240 (495)
Deferred tax liability (190) (10)
Other long-term liabilities (197) (331)
Net cash used in operating activities (6,502) (6,988)
INVESTING ACTIVITIES:    
Purchases of property and equipment (2,060) (3,629)
Proceeds from sale of property and equipment 0 133
Cash used in acquisition, net of cash acquired (97) 0
Proceeds from sale of product line 1,500 20,486
Net cash provided by (used in) investing activities (657) 16,990
FINANCING ACTIVITIES:    
Principal payments on long-term debt and short-term borrowings (17) (21)
Proceeds from issuance of common stock under equity compensation plans 194 613
Net cash provided by financing activities 177 592
Effect of exchange rate changes on cash, cash equivalents and restricted cash 804 399
Increase (decrease) in cash, cash equivalents and restricted cash (6,178) 10,993
Cash, cash equivalents and restricted cash, beginning of period 25,359 24,782
Cash, cash equivalents and restricted cash, end of period $ 19,181 $ 35,775