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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
CASH FLOWS PROVIDED BY (USED IN) OPERATING ACTIVITIES:    
Net loss Including noncontrolling interest $ (12,942) $ (10,398)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Depreciation and amortization 1,845 2,101
Goodwill, Impairment Loss 3,388 0
Increase in allowance for doubtful accounts 49 32
Loss on disposal of fixed assets and asset impairment charges 692 22
Reduction in (Increase in) accrued investment income 7 (5)
Stock-based compensation 1,306 1,222
Change in operating assets and liabilities:    
Accounts receivable 2,213 504
Inventories 824 4,751
Deferred cost of goods sold 72 (498)
Other current assets 167 (304)
Accounts payable (1,032) (2,381)
Accrued liabilities (1,659) 3,939
Deferred revenues 402 978
Deferred rent (21) (17)
Net cash used in operating activities (4,689) (54)
CASH FLOWS PROVIDED BY (USED IN) INVESTING ACTIVITIES:    
Purchases of available-for-sale short-term investments (8,993) (25,968)
Proceeds from maturities and sales of available-for-sale short-term investments 25,972 25,973
Change in other long-term assets (45) 11
Capital expenditures (400) (542)
Net cash provided by (used in) investing activities 16,534 (526)
CASH FLOWS PROVIDED BY (USED IN) FINANCING ACTIVITIES:    
Principal payments of lease financing obligations (1,104) (1,013)
Proceeds from exercise of stock options 17 0
(Increase) Decrease in Restricted Cash and Investments Set Aside, Financing (6,250) 0
Repurchase of common stock from employees for payment of taxes on vesting of restricted stock units and upon exercise of stock options (262) (263)
Net cash used in financing activities (7,599) (1,276)
EFFECT OF EXCHANGE RATE CHANGES ON CASH (14) (269)
NET CHANGE IN CASH AND CASH EQUIVALENTS 4,232 (2,125)
CASH AND CASH EQUIVALENTS:    
Beginning of period 14,648 18,876
End of period 18,880 16,751
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:    
Cash paid for interest on lease financing obligations 562 628
Cash paid for income taxes $ 164 $ 228