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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |
Net income (loss) | $ 33,255 | $ (8,232)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities: |  |
Provision for doubtful accounts | (131) | 657
Depreciation and amortization | 11,487 | 12,857
Deferred income taxes | 203 | (781)
Loss on disposals of fixed assets | 189 | 17
Gain on sale of Videotel | (53,711) | 0
Compensation expense related to stock-based awards and employee stock purchase plan | 4,159 | 3,321
Unrealized currency translation loss (gain) | 71 | (377)
Changes in operating assets and liabilities: |  |
Accounts receivable | (4,344) | (2,183)
Inventories | (553) | (174)
Prepaid expenses, other current assets, and current contract assets | (307) | (286)
Other non-current assets and non-current contract assets | (1,042) | (2,054)
Accounts payable | (1,916) | 2,041
Deferred revenue, contract liabilities, and long-term contract liabilities | 1,170 | (498)
Accrued compensation, product warranty, and other | (2,691) | 874
Other long-term liabilities | (4) | 2
Net cash (used in) provided by operating activities | (14,165) | 5,184
Cash flows from investing activities: |  |
Capital expenditures | (12,526) | (15,897)
Cash paid for acquisition of intangible assets | (94) | (44)
Proceeds from sale of fixed assets | 103 | 0
Proceeds from sale of Videotel, net of cash sold | 88,447 | 0
Purchases of marketable securities | (41,882) | (2,036)
Maturities and sales of marketable securities | 12,000 | 10,330
Net cash provided by (used in) investing activities | 46,048 | (7,647)
Cash flows from financing activities: |  |
Repayments of long-term debt | (2,597) | (182)
Repayments of term note borrowings | (21,938) | (22,507)
Repayments of line of credit borrowings | (15,000) | 0
Proceeds from line of credit borrowings | 10,000 | 5,000
Proceeds from stock options exercised and employee stock purchase plan | 700 | 484
Repurchase of common stock | (1,297) | 0
Sale of treasury stock | 0 | 4,500
Payment of finance lease | (624) | (561)
Net cash used in financing activities | (30,756) | (13,266)
Effect of exchange rate changes on cash and cash equivalents | (812) | (817)
Net increase (decrease) in cash and cash equivalents | 315 | (16,546)
Cash and cash equivalents at beginning of period | 18,050 | 34,596
Cash and cash equivalents at end of period | 18,365 | 18,050
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 929 | 1,679
Cash paid for income taxes, net of refunds | 424 | 2,578
Changes in accrued other and accounts payable related to property and equipment additions | 126 | 244
Satellite hubs acquired under finance lease | 0 | 3,068
Cash in current assets held for sale | 0 | 2,838
Right of use assets (ROU) assets arising from entering into new operating lease obligations | $ 494 | $ 0

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- Definition Amount of cash outflow for purchase of marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the issuance of an equity stock that has been previously reacquired by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + 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 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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