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FINANCIAL STATEMENT SCHEDULE I (STATEMENT OF CHANGES IN EQUITY) (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | $ 271,728,922 | $ 241,656,490 | $ 206,768,070
Net income |  | 92,841,128 | 43,493,756 | 12,956,889
Share-based compensation |  | 4,200,273 | 2,702,089 | 3,687,951
Option Exercised |  | $ 2,765,418 | 1,051,586 | 275,783
Option Exercised, shares |  | 5,596,050 |  |
Follow-on equity offering, net of issuance costs of $2,033,041 | $ 28,000,000 |  |  | 27,996,959
Follow-on equity offering, net of issuance costs of $2,033,041, Shares | 38,500,000 |  |  |
Repurchase of ordinary shares |  |  |  | (1,350,164)
Capital injection from non-controlling Shareholders |  |  |  | 2,516,457
Restricted shares vested |  |  |  |
Balance |  | 394,528,067 | 271,728,922 | 241,656,490
Ordinary shares [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | $ 26,532 | $ 26,320 | $ 22,358
Balance, shares |  | 262,956,278 | 260,836,578 | 223,577,853
Share-based compensation |  |  |  |
Option Exercised |  | $ 560 | $ 212 | $ 112
Option Exercised, shares |  | 5,596,050 | 2,119,700 | 1,115,625
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  | $ 3,850
Follow-on equity offering, net of issuance costs of $2,033,041, Shares |  |  |  | 38,500,000
Repurchase of ordinary shares |  |  |  |
Repurchase of ordinary shares, Shares |  |  |  | (2,356,900)
Capital injection from non-controlling Shareholders |  |  |  |
Restricted shares vested |  | $ 236 |  |
Restricted shares vested, Shares |  | 2,366,374 |  |
Balance |  | $ 27,328 | $ 26,532 | $ 26,320
Balance, shares |  | 270,918,702 | 262,956,278 | 260,836,578
Treasury Stock [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | $ (1,748,836) | $ (1,748,836) | $ (398,672)
Share-based compensation |  |  |  |
Option Exercised |  |  |  |
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  |
Repurchase of ordinary shares |  |  |  | (1,350,164)
Capital injection from non-controlling Shareholders |  |  |  |
Restricted shares vested |  |  |  |
Balance |  | (1,748,836) | (1,748,836) | (1,748,836)
Additional paid in capital [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | 240,111,533 | 236,358,070 | 203,125,494
Share-based compensation |  | 4,200,273 | 2,702,089 | 3,687,951
Option Exercised |  | 2,764,858 | 1,051,374 | 275,671
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  | 27,993,109
Repurchase of ordinary shares |  |  |  |
Capital injection from non-controlling Shareholders |  |  |  | 1,275,845
Restricted shares vested |  | (236) |  |
Balance |  | 247,076,428 | 240,111,533 | 236,358,070
Retained earnings (accumulated losses) [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | 40,432,352 | (3,061,404) | (16,018,293)
Share-based compensation |  |  |  |
Option Exercised |  |  |  |
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  |
Repurchase of ordinary shares |  |  |  |
Capital injection from non-controlling Shareholders |  |  |  |
Restricted shares vested |  |  |  |
Balance |  | 133,273,480 | 40,432,352 | (3,061,404)
Accumulated other comprehensive income (loss) [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | (8,721,820) | 8,780,313 | 20,037,183
Share-based compensation |  |  |  |
Option Exercised |  |  |  |
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  |
Repurchase of ordinary shares |  |  |  |
Capital injection from non-controlling Shareholders |  |  |  |
Restricted shares vested |  |  |  |
Balance |  | 13,107,187 | (8,721,820) | 8,780,313
Parent Company [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | 270,099,761 | 240,354,463 | 206,768,070
Net income |  | 92,841,128 | 43,493,756 | 12,956,889
Other comprehensive loss |  | 21,829,007 | (17,502,133) | (11,256,870)
Share-based compensation |  | 4,200,273 | 2,702,089 | 3,687,951
Option Exercised |  | 2,765,418 | 1,051,586 | 275,783
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  | 27,996,959
Repurchase of ordinary shares |  |  |  | (1,350,164)
Capital injection from non-controlling Shareholders |  |  |  | 1,275,845
Balance |  | 391,735,587 | 270,099,761 | 240,354,463
Parent Company [Member] | Ordinary shares [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | $ 26,532 | $ 26,320 | $ 22,358
Balance, shares |  | 262,956,278 | 260,836,578 | 223,577,853
Option Exercised |  | $ 560 | $ 212 | $ 112
Option Exercised, shares |  | 5,596,050 | 2,119,700 | 1,115,625
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  | $ 3,850
Follow-on equity offering, net of issuance costs of $2,033,041, Shares |  |  |  | 38,500,000
Repurchase of ordinary shares, Shares |  |  |  | (2,356,900)
Restricted shares vested |  | $ 236 |  |
Restricted shares vested, Shares |  | 2,366,374 |  |
Balance |  | $ 27,328 | $ 26,532 | $ 26,320
Balance, shares |  | 270,918,702 | 262,956,278 | 260,836,578
Parent Company [Member] | Treasury Stock [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | $ (1,748,836) | $ (1,748,836) | $ (398,672)
Repurchase of ordinary shares |  |  |  | (1,350,164)
Balance |  | (1,748,836) | (1,748,836) | (1,748,836)
Parent Company [Member] | Additional paid in capital [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | 240,111,533 | 236,358,070 | 203,125,494
Share-based compensation |  | 4,200,273 | 2,702,089 | 3,687,951
Option Exercised |  | 2,764,858 | 1,051,374 | 275,671
Follow-on equity offering, net of issuance costs of $2,033,041 |  |  |  | 27,993,109
Capital injection from non-controlling Shareholders |  |  |  | 1,275,845
Restricted shares vested |  | (236) |  |
Balance |  | 247,076,428 | 240,111,533 | 236,358,070
Parent Company [Member] | Retained earnings (accumulated losses) [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | 40,432,352 | (3,061,404) | (16,018,293)
Net income |  | 92,841,128 | 43,493,756 | 12,956,889
Balance |  | 133,273,480 | 40,432,352 | (3,061,404)
Parent Company [Member] | Accumulated other comprehensive income (loss) [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Balance |  | (8,721,820) | 8,780,313 | 20,037,183
Other comprehensive loss |  | 21,829,007 | (17,502,133) | (11,256,870)
Balance |  | $ 13,107,187 | $ (8,721,820) | $ 8,780,313

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