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v3.21.2

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Cash flows from operating activities: |  |
Net loss | $ (5,683) | $ (10,303)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |
Provision for doubtful accounts | 524 | 490
Depreciation and amortization | 10,772 | 8,277
Loss on disposals of fixed assets | 766 | 488
Compensation expense related to stock-based awards and employee stock purchase plan | 3,029 | 2,459
Unrealized currency translation gain | (35) | (492)
PPP loan forgiveness | (6,979) | 0
Changes in operating assets and liabilities: |  |
Accounts receivable | 1,194 | 852
Inventories | 34 | (1,198)
Prepaid expenses, other current assets, and current contract assets | (955) | (88)
Other non-current assets and non-current contract assets | 1,185 | (776)
Accounts payable | (2,407) | (3,391)
Contract liabilities and long-term contract liabilities | (739) | (937)
Accrued compensation, product warranty and other | 1,206 | 1,686
Other long-term liabilities | 2 | 5
Net cash provided by (used in) operating activities | 1,914 | (2,928)
Cash flows from investing activities: |  |
Capital expenditures | (15,239) | (10,206)
Cash paid for acquisition of intangible asset | (47) | (58)
Proceeds from sale of fixed assets | 100 | 6
Purchases of marketable securities | (5) | (6,095)
Maturities and sales of marketable securities | 8,000 | 13,500
Net cash used in investing activities | (7,191) | (2,853)
Cash flows from financing activities: |  |
Proceeds from PPP loan | 0 | 6,927
Proceeds from stock options exercised and employee stock purchase plan | 2,846 | 207
Repurchase of common stock | 0 | (390)
Payment of finance lease | (228) | (468)
Net cash provided by financing activities | 2,618 | 6,276
Effect of exchange rate changes on cash and cash equivalents | (39) | (711)
Net decrease in cash and cash equivalents | (2,698) | (216)
Cash and cash equivalents at beginning of period | 12,578 | 18,365
Cash and cash equivalents at end of period | 9,880 | 18,149
Supplemental disclosure of non-cash investing activities: |  |
Changes in accrued other and accounts payable related to property and equipment additions | $ 154 | $ 265

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