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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
OPERATING ACTIVITIES: |  |
Net income | $ 50,051 | $ 37,562
Reconciliation of net income to net cash provided by operating activities: |  |
Depreciation and amortization | 13,889 | 12,109
Stock-based compensation expense | 10,018 | 11,121
Allowances for doubtful accounts | 43 | 1,577
Provision for excess and obsolete inventories | 14,218 | 14,143
Share of loss from equity investee | 9 | 3,213
Foreign currency exchange (gain) loss | 428 | (112)
Deferred income taxes, net | (889) | (7,979)
Other | 581 | (125)
Changes in operating assets and liabilities: |  |
Accounts receivable (including changes in related party balances of ($4,318) and ($10,037) during the six months ended December 31, 2019 and 2018, respectively) | 33,444 | 54,568
Inventories | (48,460) | (20,861)
Prepaid expenses and other assets (including changes in related party balances of ($3,673) and ($8,514) during the six months ended December 31, 2019 and 2018, respectively) | (35,450) | (3,978)
Accounts payable (including changes in related party balances of $16,107 and $4,655 during the six months ended December 31, 2019 and 2018, respectively) | 32,415 | (70,109)
Income taxes payable | (9,492) | 2,533
Deferred revenue | 12,192 | 38,169
Accrued liabilities (including changes in related party balances of $5,249 and ($4,436) during the six months ended December 31, 2019 and 2018, respectively) | 17,810 | 8,847
Other long-term liabilities (including changes in related party balances of $430 and $500 during the six months ended December 31, 2019 and 2018, respectively) | (3,654) | 424
Net cash provided by operating activities | 87,153 | 81,102
INVESTING ACTIVITIES: |  |
Purchases of property, plant and equipment (including payments to related parties of $2,274 and $2,980 during the six months ended December 31, 2019 and 2018, respectively) | (24,089) | (9,306)
Proceeds from sale of investment in a privately-held company | 750 | 0
Net cash used in investing activities | (23,339) | (9,306)
FINANCING ACTIVITIES: |  |
Proceeds from debt | 0 | 41,760
Repayment of debt | 0 | (67,700)
Net repayment on asset-backed revolving line of credit | (1,116) | (41,644)
Proceeds from exercise of stock options | 2,704 | 0
Payment of withholding tax on vesting of restricted stock units | (3,574) | (1,601)
Payments of obligations under finance leases | (90) | (139)
Net cash used in financing activities | (2,076) | (69,324)
Effect of exchange rate fluctuations on cash | 175 | (101)
Net increase in cash, cash equivalents and restricted cash | 61,913 | 2,371
Cash, cash equivalents and restricted cash at the beginning of the period | 262,140 | 120,382
Cash, cash equivalents and restricted cash at the end of the period | 324,053 | 122,753
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 1,261 | 2,687
Cash paid for taxes, net of refunds | 37,741 | 18,388
Non-cash investing and financing activities: |  |
Unpaid property, plant and equipment purchases (including due to related parties of $1,729 and $1,963 as of December 31, 2019 and 2018, respectively) | 9,222 | 5,015
Contribution of certain technology rights to equity investee | 0 | 3,000
Receivable from exercise of stock options | $ 1,229 | $ 0

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- Definition Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. + 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 outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + 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 during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 net cash inflow or cash outflow 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 either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. + 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 Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: 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 during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 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 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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