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v3.20.1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Operating activities: |  |
Net loss | $ (4,705) | $ (2,844)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |
Depreciation and amortization | 533 | 324
Stock compensation expense | 3,768 | 2,628
Foreign currency translation loss | 7 | 6
Amortization of premiums and discounts on marketable securities | (20) | (215)
Amortization and interest accretion related to operating leases | 794 | 387
Changes in operating assets and liabilities: |  |
Inventory | (466) | (505)
Accounts receivable | 7,997 | 4,680
Prepaid and other current assets | (549) | 168
Accounts payable | (59) | (1,368)
Accrued expenses | (1,864) | (2,751)
Operating lease liabilities | (750) | (310)
Other non-current assets and liabilities, net | 0 | (46)
Net cash provided by operating activities | 4,686 | 154
Investing activities: |  |
Purchases of short term investments | (5,676) | (10,686)
Maturities of short term investments | 20,135 | 26,580
Expenditures for property, plant and equipment | (717) | (232)
Net cash provided by investing activities | 13,742 | 15,662
Financing activities: |  |
Net proceeds from common stock issuance due to stock option exercises | 420 | 998
Payments on employee's behalf for taxes related to vesting of restricted stock unit awards | (97) | 0
Other | (17) | (16)
Net cash provided by financing activities | 306 | 982
Net increase in cash, cash equivalents, and restricted cash | 18,734 | 16,798
Cash, cash equivalents, and restricted cash at beginning of period | 26,978 | 18,286
Cash, cash equivalents, and restricted cash at end of period | $ 45,712 | $ 35,084

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 + Details
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