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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating activities: |  |  |
Net income | $ 38,765,537 | $ 93,855,400 | $ 43,923,997
Less: Income (loss) from discontinued operations, net of tax | (23,305,045) | (4,087,925) | 2,710,591
Net income from continuing operations | 62,070,582 | 97,943,325 | 41,213,406
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Share-based compensation | 13,788,049 | 4,200,273 | 2,702,089
Depreciation of property, plant and equipment | 27,487,163 | 27,576,077 | 22,620,885
Loss on disposal of property plant and equipment |  | 130,666 |
Deferred tax assets | (151,843) | (85,302) | 445
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (539,597) | 1,172,506 | 13,794,121
Notes receivable | 12,022,847 | (10,197,038) | (3,948,804)
Prepaid expenses and other current assets | (4,699,699) | 496,485 | 2,895,291
Advances to suppliers | (1,914,816) | (62,384) | (735,105)
Inventories | (641,481) | (7,919,605) | (1,601,970)
Amount due from related parties | 82 | 212 | (5,897)
Prepaid land use rights | 544,267 | 531,903 | 517,448
Accounts payable | (9,449,164) | 4,038,950 | 3,104,177
Notes payable | (14,204,999) | 199,562 | 7,860,687
Accrued expenses and other current liabilities | (918,399) | 4,581,224 | 805,730
Income tax payable | (7,314,062) | 7,253,601 | 4,420,313
Advances from customers | 2,076,037 | 8,386,416 | 2,726,889
Amount due to related parties | 8,793 | 1,000 | (11,232,335)
Deferred government subsidies | (605,268) | (591,519) | (588,308)
Net cash provided by operating activities-continuing operations | 77,558,492 | 137,656,352 | 84,549,062
Net cash provided by operating activities-discontinued operations | 17,994,548 | 5,048,042 | 14,122,875
Net cash provided by operating activities | 95,553,040 | 142,704,394 | 98,671,937
Investing activities: |  |  |
Purchases of property, plant and equipment | (143,064,872) | (64,084,712) | (66,503,592)
Investment in an affiliate |  | (63,793) | (581,581)
Purchase of short-term investments | (37,860,000) |  |
Repayment of short-term investments | 15,144,000 |  |
Acquisition of Xinjian Daqo Investment | 443,579 |  |
Net cash used in investing activities-continuing operations | (165,337,293) | (64,148,505) | (67,085,173)
Net cash (used in) provided by investing activities-discontinued operations | 616,988 | (3,752,066) | (975,550)
Net cash used in investing activities | (164,720,305) | (67,900,571) | (68,060,723)
Financing activities: |  |  |
Proceeds from related parties loans | 34,831,200 | 19,382,389 | 56,923,289
Repayment of related parties loans | (34,831,200) | (19,382,389) | (48,286,149)
Proceeds from bank borrowings | 56,002,512 | 65,349,400 | 91,927,666
Repayment of bank borrowings | (59,819,936) | (96,200,000) | (98,184,680)
Proceeds from options exercised | 686,596 | 2,238,854 | 1,051,586
Proceeds from follow-on equity offering | 113,540,845 |  |
Insurance costs for follow-on equity offering | (6,919,202) |  |
Net cash provided by (used in) financing activities–continuing operations | 103,490,815 | (28,611,746) | 3,431,712
Net cash used in financing activities–discontinued operations | (16,778,925) | (8,742,573) | (33,711,235)
Net cash provided by (used in) financing activities | 86,711,890 | (37,354,319) | (30,279,523)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 4,909,097 | 3,335,715 | (2,003,470)
Net increase (decrease) in cash, cash equivalents and restricted cash | 22,453,722 | 40,785,219 | (1,671,779)
Cash, cash equivalents and restricted cash at the beginning of the year (includes $20,590,084, $3,723,807 and $8,952,260 of cash, cash equivalents and restricted cash in current assets associated with discontinued operations on December 31, 2015, 2016 and 2017) | 72,666,164 | 31,880,945 | 33,552,724
Cash, cash equivalents and restricted cash at the end of the year (includes $3,723,807, $8,952,260 and $1,091,190 of cash, cash equivalents and restricted cash in current assets associated with discontinued operations on December 31, 2016, 2017 and 2018) | 95,119,886 | 72,666,164 | 31,880,945
Cash and cash equivalents | 65,419,389 | 53,802,946 | 15,987,478
Restricted cash | 28,718,478 | 11,989,559 | 15,893,467
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows | 95,119,886 | 72,666,164 | 31,880,945
Supplemental disclosure of cash flow information: |  |  |
Interest paid, net of capitalized interest | 10,787,862 | 16,308,829 | 12,350,570
Income taxes paid | 19,452,799 | 9,526,485 | 2,998,658
Supplemental schedule of non-cash investing activities: |  |  |
Purchases of property, plant and equipment included in payables | 56,153,860 | 22,018,200 | 61,475,715
Purchase of property, plant and equipment included in amounts due to related parties – short-term portion | 2,240,686 | 1,825,617 | 3,341,201
Payables for acquisition of Xinjiang Daqo Investment included in amounts due to related parties – long-term portion | $ 15,991,800 |  |

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- Definition The increase (decrease) during the reporting period of amounts due within one year (or one business cycle) from note holders for outstanding loans. + 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=109223946&loc=d3e3602-108585 + Details
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 Reference 2: 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=109223946&loc=d3e3521-108585 Reference 3: 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=109223946&loc=d3e3602-108585 + Details
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- Definition The amount of fixed assets that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + 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 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled 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 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + 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=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to 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=109223946&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates. + 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=109223946&loc=d3e3255-108585 + Details
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