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SHARE-BASED AWARDS (Summary of Restricted Shares) (Details) - $ / shares |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 02, 2018 | Sep. 13, 2017 | Aug. 08, 2017 | Aug. 07, 2017 | Aug. 01, 2014 | Jul. 01, 2014 | Feb. 18, 2014 | Dec. 31, 2019 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Forfeited |  |  |  |  |  |  |  | (355,884) |  |
Restricted shares [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Beginning balance |  |  |  |  |  |  |  | 11,573,802 |  |
Numbers of shares, Granted | 5,992,605 | 45,000 | 3,319,200 | 1,453,950 | 69,564,000 | 21,132,000 | 1,370,250,000 |  | 0 | 0
Numbers of shares, Vested |  |  |  |  |  |  |  | (63,618) |  |
Numbers of shares, Forfeited |  |  |  |  |  |  |  | (83,250) |  |
Numbers of shares, Ending balance |  |  |  |  |  |  |  | 11,426,934 |  |
Numbers of shares, Exercisable |  |  |  |  |  |  |  | 1,073,679 |  |
Expected to vest |  |  |  |  |  |  |  | 10,353,255 |  |
Weighted average grant date fair value, Beginning balance |  |  |  |  |  |  |  | $ 1.32 |  |
Weighted average grant date fair value, Vested |  |  |  |  |  |  |  | 1.34 |  |
Weighted average grant date fair value, Forfeited |  |  |  |  |  |  |  | 1.93 |  |
Weighted average grant date fair value, Ending balance |  |  |  |  |  |  |  | 1.32 |  |
Weighted average grant date fair value, Exercisable |  |  |  |  |  |  |  | 1.93 |  |
Expected to vest |  |  |  |  |  |  |  | $ 1.25 |  |
Restricted shares [Member] | February 18, 2014 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 1,370,250 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 1.93 |  |
Restricted shares [Member] | July 1, 2014 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 21,132 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 2.35 |  |
Restricted shares [Member] | August 1, 2014 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 69,564 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 2.44 |  |
Restricted shares [Member] | August 7, 2017 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 1,453,950 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 1.33 |  |
Restricted shares [Member] | August 8, 2017 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 3,319,200 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 1.34 |  |
Restricted shares [Member] | September 13, 2017 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 45,000 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 1.33 |  |
Restricted shares [Member] | October 2, 2018 [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Numbers of shares, Granted |  |  |  |  |  |  |  | 5,992,605 |  |
Weighted average grant date fair value, Granted |  |  |  |  |  |  |  | $ 1.19 |  |

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the 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 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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