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STOCK-BASED COMPENSATION - Additional Information (Details) |  |  |  |  |  |  |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 21, 2019 shares | Sep. 13, 2018 shares | Aug. 21, 2018 $ / shares shares | Nov. 17, 2017 shares | Oct. 13, 2017 USD ($) $ / shares shares | Apr. 05, 2017 USD ($) $ / shares shares | Dec. 09, 2016 USD ($) $ / shares | Jul. 27, 2016 $ / shares shares | Aug. 21, 2019 shares | Aug. 27, 2018 USD ($) $ / shares shares | Aug. 21, 2018 USD ($) $ / shares shares | Jun. 30, 2017 shares | Mar. 31, 2017 USD ($) $ / shares shares | Jan. 23, 2017 shares | Jul. 27, 2016 USD ($) $ / shares | Oct. 18, 2015 USD ($) $ / shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2019 CNY (¥) shares | Dec. 31, 2018 CNY (¥) shares | Jun. 30, 2019 shares | Jun. 30, 2018 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  | 1 year |  |  |  | 1 year |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  | $ 6.75 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  |  |  |  | $ 4,063,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 320,800 | 320,800 |  |  |
Shares, Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,086 | 250,086 |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  | 487,057 |  | 487,057 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |  |
Shares, Outstanding | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,611,720 | 4,611,720 | 4,189,900 | 4,361,634 | 3,677,843
December 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 192,000 | 160,000
August 2018 Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercisable Options, Average Remaining Contractual life (years) |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  | 260,800 |  |  |  |  |  |  |  | 260,800 |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  |  |  |  | 130,400 |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 396,200 |
Stock or Unit Option Plan Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 582,247 | ¥ 4,057,093 | ¥ 9,539,917 |  |
Stock Issued During Period, Shares, Issued for Services |  |  |  |  |  |  |  |  | 175,200 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Issued for Services | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 963,600 |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  |  | $ 5.50 |  |  |  |  |  |  | $ 5.50 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000 | 60,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,844 | 500,844 |  | 382,956 |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Restricted Stock [Member] | March 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |  |  |
Restricted Stock [Member] | March 2017 [Member] | Consulting firm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services |  |  | 40,000 |  | 40,000 |  |  |  |  |  |  |  |  | 40,000 |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Issued for Services | $ |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 256,020 |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.4005 |  |  |  |  |  |  |  |
Restricted Stock [Member] | April 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | April 2017 [Member] | Independent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services |  |  |  |  |  |  | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Issued for Services | $ |  |  |  |  |  |  | $ 390,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  | $ 6.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | October 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  | $ 5.11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  |  | $ 919,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  | 180,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | August 2018 Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  |  |  |  |  |  |  |  | $ 2,523,240 |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  |  |  |  | 391,200 |  |  |  |  |  |  |  |  |  |
Restricted Stock [Member] | August 2018 Member | Independent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Issued for Services |  |  |  |  |  |  |  |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Issued for Services | $ |  |  |  |  |  |  |  |  |  |  | $ 32,000 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 6.40 |  |  |  |  |  |  |  |  |  |  |
Restricted Stock For Services [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock or Unit Option Plan Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,869 | ¥ 33,927 | 516,194 |  |
Share-based Compensation | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 0 |  |  |
Restricted Stock For Services [Member] | August 2018 Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  | $ 6.45 |  |  |  |  |  |  |  | $ 6.45 |  |  |  |  |  |  |  |  |  |
Employees And Non Employee Director [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Stock Closing Price | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.40 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 704,000 |  |  |  |  |
Senior Manager [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 6 months 4 days | 1 year 6 months 4 days |  |  |
Share-based Compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,620,000 | ¥ 11,290,000 |  |  |
Management [Member] | Performance Shares [Member] | December 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 602,000 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 250,000 |
Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock or Unit Option Plan Expense | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 0 | ¥ 0 |  |
Share-based Compensation Award, Tranche One [Member] | Employees And Non Employee Director [Member] | Restricted Stock [Member] | October 2015 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  |  |  |  |  | 3,800 |  |  |  |  |  |  |  |  |
Share-based Compensation Award, Tranche One [Member] | Employees [Member] | Restricted Stock [Member] | July 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  |  | 3,800 |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Retrospectively restated for effect of stock split on December 27, 2019

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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + 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 (i) -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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