China XD Plastics (CXDC) 10-Q 14 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	9-May-14
Document And Entity Information Abstract	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Entity Registrant Name	'China XD Plastics Co Ltd	'
Entity Central Index Key	'0001353970	'
Current Fiscal Year End Date	'--12-31	'
Document Fiscal Period Focus	'Q1	'
Document Fiscal Year Focus	'2014	'
Entity Filer Category	'Smaller Reporting Company	'
Entity Units Outstanding	'	48,679,773

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:	'	'
Cash and cash equivalents	$170,415,179	$95,545,904
Restricted cash	25,221,993	13,708,971
Time deposits	324,142,591	281,343,641
Accounts receivable, net	185,946,834	282,320,819
Amounts due from related parties	39,727	225,752
Inventories	237,065,510	144,885,688
Prepaid expenses and other current assets	26,589,597	8,418,143
Total current assets	969,421,431	826,448,918
Property, plant and equipment, net	224,162,174	233,841,735
Land use rights, net	12,066,715	12,457,001
Other non-current assets	6,901,965	3,158,974
Total assets	1,212,552,285	1,075,906,628
Current liabilities:	'	'
Short-term loans	241,427,485	314,682,620
Bills payable	52,281,063	25,604,176
Accounts payable	137,428,176	122,457,396
Income taxes payable	7,077,908	18,631,698
Warrant liability	1,226,140	1,063,401
Accrued expenses and other current liabilities	52,436,449	55,893,004
Total current liabilities	491,877,221	538,332,295
Long-term bank loans	27,347,018	'
Notes payable	148,431,718	'
Income taxes payable	8,317,267	8,224,057
Deferred income tax liabilities	18,439,327	19,428,706
Total liabilities	694,412,551	565,985,058
Redeemable Series D convertible preferred stock	97,576,465	97,576,465
Stockholders' equity:	'	'
Series B preferred stock	100	100
Common stock, US$0.0001 par value, 500,000,000 shares authorized, 48,570,338 shares and 47,896,133 shares issued, 48,549,338 shares and 47,875,133 shares outstanding as of March 31, 2014 and December 31, 2013, respectively	4,856	4,789
Treasury stock, 21,000 shares at cost	-92,694	-92,694
Additional paid-in capital	76,752,440	76,341,659
Retained earnings	333,043,388	311,047,337
Accumulated other comprehensive income	10,855,179	25,043,914
Total stockholders' equity	420,563,269	412,345,105
Commitments and contingencies	'	'
Total liabilities, redeemable convertible preferred stocks and stockholders' equity	$1,212,552,285	$1,075,906,628

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]	'	'
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	48,570,338	47,896,133
Common stock, shares outstanding	48,549,338	47,875,133
Treasury shares, shares	21,000	21,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]	'	'
Revenues	$223,580,675	$170,967,571
Cost of revenues	-176,932,337	-141,811,440
Gross profit	46,648,338	29,156,131
Selling expenses	-122,328	-62,774
General and administrative expenses	-3,796,364	-3,483,915
Research and development expenses	-8,630,734	-5,010,919
Total operating expenses	-12,549,426	-8,557,608
Operating income	34,098,912	20,598,523
Interest income	3,035,365	1,069,604
Interest expense	-8,579,977	-2,935,986
Foreign currency exchange gains (losses)	-479,190	489,193
Government grant	1,311,239	208,919
Change in fair value of warrant liability	-162,739	20,324
Total non-operating expense, net	-4,875,302	-1,147,946
Income before income taxes	29,223,610	19,450,577
Income tax expense	-7,227,559	-4,999,722
Net income	21,996,051	14,450,855
Earnings per common share:	'	'
Basic and diluted	$0.34	$0.23
Net income	21,996,051	14,450,855
Other comprehensive income (loss)	'	'
Foreign currency translation adjustment, net of nil income taxes	-14,188,735	881,276
Comprehensive income	$7,807,316	$15,332,131

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net cash provided by operating activities	$26,174,417	$68,826,607
Cash flows from investing activities:	'	'
Purchase of time deposits	-162,265,820	-87,783,014
Proceeds from maturity of time deposits	111,155,365	24,106,067
Purchases of property, plant and equipment	-1,020,326	-4,678,651
Net cash used in investing activities	-52,130,781	-68,355,598
Cash flows from financing activities:	'	'
Proceeds from bank borrowings	176,935,307	105,865,810
Repayments of bank borrowings	-215,370,999	-76,938,530
Proceeds from issuance of the Notes	148,396,175	'
Payment of issuance costs of the Notes	-3,481,955	'
Placement of restricted cash as collateral for bank borrowings	-2,786,383	'
Net cash provided by financing activities	103,692,145	28,927,280
Effect of foreign currency exchange rate changes on cash and cash equivalents	-2,866,506	528,955
Net increase in cash and cash equivalents	74,869,275	29,927,244
Cash and cash equivalents at beginning of period	95,545,904	83,822,602
Cash and cash equivalents at end of period	170,415,179	113,749,846
Supplemental disclosure of cash flow information:	'	'
Interest paid	5,242,256	825,939
Income taxes paid	18,749,381	6,036,785
Accrual for issuance costs of the Notes	1,439,209	'
Accrual for purchase of equipment	$155,285	'

Basis_of_presentation_signific

Basis of presentation, significant concentrations and risks	3 Months Ended
	Mar. 31, 2014
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Basis of presentation, significant concentrations and risks	'
	Note 1 - Basis of presentation, significant concentrations and risks
	(a) Basis of presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission ("SEC"). The condensed consolidated balance sheet as of December 31, 2013 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2013, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on March 26, 2014.
	In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of March 31, 2014, the results of operations and cash flows for the three-month periods ended March 31, 2014 and 2013, have been made.
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectibility of accounts receivable, the fair values of stock-based compensation awards, and the accruals for tax uncertainties and other contingencies. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
	(b) Significant concentrations and risks
	Sales concentration
	The Company sells its products, substantially through approved distributors in the People's Republic of China (the "PRC").   The Company's sales are highly concentrated.  Sales to major distributors, which individually exceeded 10% of the Company's revenues, are as follows:
			For the Three-Month Period Ended March 31,
			2014					2013
			US$			%		US$		%
	Distributor A			37,462,622			16.80%		22,864,098		13.40%
	Distributor B			36,355,612			16.30%		43,531,918		25.50%
	Distributor C			33,197,485			14.80%		23,024,899		13.50%
	Distributor D			32,580,215			14.60%		43,001,855		25.20%
	Distributor E			32,533,393			14.60%		-		0%
	Distributor F			12,558,755			5.60%		22,921,894		13.40%
	Total			184,688,082			82.70%		155,344,664		91.00%
	The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.
	Purchase concentration of raw materials and equipment
	The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. During the three-month periods ended March 31, 2014 and 2013, the Company purchases its raw materials through seven and three distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 79.2% and 98.7%, respectively.  Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.
	The Company purchased equipment from a major equipment distributor, which accounted for 72.4% and 50.6% of the Company's total equipment purchases for the three-month periods ended March 31, 2014 and 2013, respectively. A change of the supplier could cause a delay in manufacturing and a possible loss of sales, which could adversely affect the Company's business, financial position and results of operations.  The majority owner of the equipment distributor is also the majority owner of a major raw material supplier that supplied approximately 1.6% and 19.3% of the Company's total raw material purchases for the three-month periods ended March 31, 2014 and 2013, respectively.  In addition, the majority owner of the equipment distributor is also the majority owner of sales Distributor C presented above.
	Cash concentration
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		March 31,		December 31,
		2014		2013
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC	431,176,930			389,522,815
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.	31,070			84,011
	Financial Institutions in the PRC	60,211,355			-
	Financial Institution in Hong Kong SAR	28,210,822			847,559
	Euro denominated bank deposits with:
	Financial institution in Hong Kong SAR	93,694			143,890
	HK dollar denominated bank deposits with:
	Financial institution in Hong Kong	50,053			-
	The bank deposits with financial institutions in the PRC are not insured by any government authority.  The bank deposits with financial institutions in the HK SAR are insured by the government authority up to HK$500,000. To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC and HK SAR with acceptable credit rating.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchase of raw materials are reported as restricted cash and amounted to US$12,869,185 and US$3,964,518 as of March 31, 2014 and December 31, 2013, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchase of raw materials are reported as restricted cash and amounted to US$2,419,406 and US$$2,352,280 as of March 31, 2014 and December 31, 2013, respectively. The cash will be available for use by the Company 60 days from the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to US$9,933,402 and US$7,392,173 as of March 31, 2014 and December 31, 2013, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the condensed consolidated statements of cash flows.

Accounts_receivable

Accounts receivable	3 Months Ended
	Mar. 31, 2014
Accounts receivable [Abstract]	'
Accounts receivable	'
	Note 2 - Accounts receivable
	Accounts receivable consists of the following:
		31-Mar-14			31-Dec-13
		US$			US$
	Accounts receivable		186,077,519			282,466,580
	Allowance for doubtful accounts		(130,685	)		(145,761	)
	Accounts receivable, net		185,946,834			282,320,819
	As of March 31, 2014 and December 31, 2013, the accounts receivable balances also include notes receivable in the amount of US$7,919,980 and US$7,481,629, respectively. As of March 31, 2014 and December 31, 2013, US$82,316,526 and US$133,778,940 of accounts receivable are pledged for the short-term bank loans, respectively.
	There was no accrual of additional provision or write-off of accounts receivable for the three-month periods ended March 31, 2014 and 2013.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Inventories	'
	Note 3 - Inventories
	Inventories consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Raw materials		220,578,414		135,120,514
	Work in progress		934,221		2,551,621
	Finished goods		15,552,875		7,213,553
	Total inventories		237,065,510		144,885,688
	There were no write down of inventories for the three-month periods ended March 31, 2014 and 2013.

Prepaid_expenses_and_other_cur

Prepaid expenses and other current assets	3 Months Ended
	Mar. 31, 2014
Prepaid expenses and other current assets [Abstract]	'
Prepaid expenses and other current assets	'
	Note 4 - Prepaid expenses and other current assets
	Prepaid expenses and other current assets consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Advances to suppliers		14,434,027		920,277
	Value added taxes receivables		8,255,872		3,924,767
	Interest receivable		3,259,567		2,405,666
	Other		640,131		1,167,433
	Total prepaid expenses and other current assets		26,589,597		8,418,143
	The Company is required to pay deposits to suppliers for the principal raw materials ordered. The Company makes advanced orders of raw materials based upon (1) the demand and supply situation in the raw materials market and (2) the forecasted demand of products. All advances to suppliers as of March 31, 2014 are related to purchase of raw materials, which were subsequently received by the Company in April 2014.
	Interest receivable mainly represents interest income earned from time deposits and restricted cash.
	Other mainly include other prepaid expenses and staff advances.

Property_plant_and_equipment_n

Property, plant and equipment, net	3 Months Ended
	Mar. 31, 2014
Property, plant and equipment, net [Abstract]	'
Property, plant and equipment, net	'
	Note 5 - Property, plant and equipment, net
	Property, plant and equipment consist of the following:
		31-Mar-14			December 31, 2013
		US$			US$
	Machinery, equipment and furniture		205,062,045			209,921,805
	Motor vehicles		1,543,017			1,580,877
	Workshops and buildings		60,588,861			62,217,256
	Construction in progress		5,983,163			4,807,666
	Total property, plant and equipment		273,177,086			278,527,604
	Less accumulated depreciation		(49,014,912	)		(44,685,869	)
	Property, plant and equipment, net		224,162,174			233,841,735
	For the three-month periods ended March 31, 2014 and 2013, no interest expense was capitalized as a component of the cost of construction in progress as the amount was inconsequential. Depreciation expense on property, plant and equipment was allocated to the following expense items:
		Three-Month Period Ended
		March 31,
		2014			2013
		US$			US$
	Cost of revenues		4,870,655			4,163,505
	General and administrative expenses		302,281			640,866
	Research and development expenses		432,009			367,983
	Total depreciation expense		5,604,945			5,172,354

Accrued_expenses_and_other_cur

Accrued expenses and other current liabilities	3 Months Ended
	Mar. 31, 2014
Accrued expenses and other current liabilities [Abstract]	'
Accrued expenses and other current liabilities	'
	Note 6 - Accrued expenses and other current liabilities
	Accrued expenses and other current liabilities consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Payables for purchase of property, plant and equipment		43,268,755		44,510,678
	Accrued freight expenses		1,190,761		5,010,341
	Others		7,976,933		6,371,985
	Total accrued expenses and other current liabilities		52,436,449		55,893,004
	Others mainly represent accrued issuance cost for the note offering, non income tax payables, accrued interest expenses, accrued payroll and employee benefits, and other accrued miscellaneous operating expenses.

Fair_value_measurement

Fair value measurement	3 Months Ended
	Mar. 31, 2014
Fair value measurement [Abstract]	'
Fair value measurement	'
	Note 7 - Fair value measurement
	Short-term financial instruments, including cash and cash equivalents, restricted cash, time deposits, accounts receivable, amounts due from related parties, short-term bank loans, bills payable, accounts payable and accrued expenses and other current liabilities- carrying amounts approximate fair values because of the short maturity of these instruments.
	Long-term bank loans - fair value is based on the amount of future cash flows associated with each loan discounted at the Company's current borrowing rate for similar debt instruments of comparable terms. The carrying value of the long-term bank loans approximate their fair values as the long-term bank loans carry interest rates which approximate rates currently offered by the Company's banks for similar debt instruments of comparable maturities.
	Notes payable - fair values of the Company's notes payable are estimated based on quoted market prices which are categorized as Level 1 measurement in the fair value hierarchy. As of March 31, 2014, the carrying amount and estimated fair value of the notes payable were US$148,431,718 and US$154,782,000, respectively.
	Derivative liabilities- fair values are determined using an option-pricing model which considers the following significant inputs: the Company's stock price, risk-free interest rate and expected volatility of the Company's stock price over the term of the derivative liabilities.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2014
Borrowings [Abstract]	'
Borrowings	'
	Note 8 - Borrowings
	(a)  Current
				31-Mar-14			31-Dec-13
				US$			US$
	Unsecured loans				118,084,392			169,027,897
	Loans secured by accounts receivable				65,632,842			100,434,445
	Loans secured by bank deposits				49,667,010			36,960,867
	Total short-term bank loans	(i)			233,384,244			306,423,209
	Interest-free loan secured by land use rights	(ii)			8,043,241			8,259,411
	Total short-term loans				241,427,485			314,682,620
	(i)	As of March 31, 2014 and December 31, 2013, the Company's short-term bank loans bear a weighted average interest rate of 5.8% and 5.9% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.
	(ii)	On April 11, 2013, the Company obtained a one-year interest-free loan in the amount of RMB50.0 million (equivalent to US$8.0 million) from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government"). The loan was issued to support the Company's construction of a production plant in Sichuan. The loan will be secured by a land use right to be granted to the Company in connection with the construction.
	(b) Non-current
			31-Mar-14			31-Dec-13
			US$			US$
	Unsecured loans			27,347,018			-
	Total long-term bank loans			27,347,018			-
	On January 17, 2014, the Company obtained four two-year unsecured loans with an aggregated principal amount of RMB150 million (equivalent to US$24.1 million) at 110% of Renminbi benchmark interest rates per annum from China Construction Bank.
	On March 18, 2014, the Company obtained a 15-month unsecured loan of RMB50 million (equivalent to US$8.0 million) at an interest rate of 6.15% per annum. On March 31, 2014, the Company prepaid RMB30 million (equivalent to US$4.8 million) of the loan.
	As of March 31, 2014, the Company had total lines of credit of RMB3,004.4 million (US$483.3 million). Other than US$48.5 million line of credit from a bank in Hong Kong SAR, the remaining lines of credit are from PRC banks in Harbin, Heilongjiang province. As of March 31, 2014, the Company has unused lines of credit of RMB 1,013.6 million (US$163.1 million) with remaining terms less than 12 months and RMB 370.0 million (US$59.5 million) with remaining terms beyond 12 months.
	Certain lines of credit contain financial covenants such as total stockholders' equity, debt asset ratio, current ratio, contingent liability ratio and net profit. As of March 31, 2014, the Company has met these financial covenants.

Notes_Payable

Notes Payable	3 Months Ended
	Mar. 31, 2014
Notes Payable [Abstract]	'
Notes Payable	'
	Note 9 - Notes Payable
	On February 4, 2014, Favor Sea Limited, a wholly owned subsidiary of the Company, issued US$150,000,000 aggregate principal amount of 11.75% Guaranteed Senior Notes due 2019 (the ''Notes'') with issuance price of 99.080%. The Notes bear interest at a rate of 11.75% per annum, payable on February 4 and August 4 of each year, commencing August 4, 2014.  The Notes will mature on February 4, 2019.  Net proceeds after debt issuance costs and debt discount were approximately US$143.5 million.  Debt issuance costs in the amount of US$4.9 million are recorded as deferred charges and included in the other noncurrent assets on the consolidated balance sheet.  The debt discount and debt issuance costs are amortized into interest expense using the effective interest method over the terms of the Notes.
	The Company may at its option redeem the Notes, in whole but not in part, at any time prior to February 4, 2017, at a redemption price equal to 100% of the principal amount of the Notes redeemed plus the Applicable Premium, as defined in the Indenture of the Notes, and accrued and unpaid interest, if any, to (but not including) the redemption date.
	At any time and from time to time prior to February 4, 2017, the Company may at its option redeem up to 35% of the aggregate principal amount of the Notes with the net cash proceeds of one or more sales of common stock of China XD in an equity offering, at a redemption price of 111.75% of the principal amount of the Notes redeemed, plus accrued and unpaid interest, if any, to (but not including) the redemption date, provided that at least 65% of the aggregate principal amount of the Notes issued remains outstanding after each such redemption and any such redemption takes place within 60 days after the closing of the related equity offering.
	On or after February 4, 2017, the Company may on any or more occasions redeem all or any part of the Notes, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest, if any, on the Notes redeemed, to (but not including) the applicable date of redemption, if redeemed during the twelve-month period beginning on February 4 of the years indicated below:
	Year	Redemption Price
	2017		105.875	%
	2018		102.938	%
	Upon occurrence of a Change of Control Triggering Event, as defined in the Indenture of the Notes, the Company must make an offer to purchase all the Notes outstanding at a purchase price equal to 101% of their principal amount, plus accrued and unpaid interest, if any, to (but not including) the purchase date.
	The Notes are guaranteed on a senior basis by China XD and Xinda Holding (HK) Company Limited ("Xinda Holding (HK)"), one of its direct subsidiaries. The Notes are secured by a lien on the share capital of Favor Sea Limited and Xinda Holding (HK).

Related_party_transactions

Related party transactions	3 Months Ended
	Mar. 31, 2014
Related party transactions [Abstract]	'
Related party transactions	'
	Note 10 - Related party transactions
	The Company entered into related party transactions with Harbin Xinda High-Tech Co., Ltd. ("Xinda High-Tech"), an entity controlled by the wife of Mr. Han, the chief executive officer and controlling stockholder of the Company, Mr. Han and Mr. Han's son.  The significant related party transactions are summarized as follows:
		Three-Month Period Ended March 31,
		2014		2013
		US$		US$
	Costs and expenses resulting from transactions with  related parties:
	Rental expenses for plant and office spaces		199,911		198,052
	The balance due from a related party is summarized as follows:
		31-Mar-14		31-Dec-13
		US$		US$
	Amounts due from a related party:
	Prepaid rent expenses to Xinda High-Tech		27,662		225,752
	Prepaid rent expenses to Mr. Han's Son		12,065		-
	Total		39,727		225,752
	The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech:
	Premise Leased	Area (M2)		Annual Rental Fee (US$)		Period of Lease
	Plant and office building		20,250		671,995	Between May 1, 2012 and December 31, 2013
	Office building		250		8,195	Between January 1, 2012 and December 31, 2013
	Office building		3,394		111,259	Between May 1, 2012 and April 30, 2013
	Office building		3,394		111,259	Between May 1, 2013 and December 31, 2013
	Office building		23,894		783,253	Between January 1, 2014 and December 31, 2018
	The Company also rents a facility of approximately 3,134 square meters in Harbin, Heilongjiang province from Mr. Han's son for an annual rental fee of RMB100,000 (approximately US$16,390).  The period of the lease is from January 1, 2014 to December 31, 2014.

Income_tax

Income tax	3 Months Ended
	Mar. 31, 2014
Income tax [Abstract]	'
Income tax	'
	Note 11 - Income tax
	Pursuant to an approval from the local tax authority in July 2013, Sichuan Xinda Enterprise Group Co., Ltd. ("Sichuan Xinda Group"), a subsidiary of China XD, became a qualified enterprise located in the western region of the PRC, which entitled it to a preferential income tax rate of 15% from January 1, 2013 to December 31, 2020.
	The effective income tax rates for the three-month periods ended March 31, 2014 and 2013 were 24.7% and 25.7%, respectively. The effective income tax rate for the three-month period ended March 31, 2014 differs from the PRC statutory income tax rate of 25% primarily due to the abovementioned Sichuan Xinda Group's preferential income tax rate, partially offsetting by effect of tax rate differential on entities not subject to PRC income tax, effect of non-deductible expenses and increase of valuation allowances against deferred income tax assets of certain subsidiaries, which were at cumulative loss position.
	As of March 31, 2014, the unrecognized tax benefits were US$8,832,514 and the interest relating to unrecognized tax benefits was US$476,193.  No penalties expense related to unrecognized tax benefits were recorded. The Company is currently unable to provide an estimate of a range of the total amount of unrecognized tax benefits that is reasonably possible to change significantly within the next twelve months.

Warrants

Warrants	3 Months Ended
	Mar. 31, 2014
Warrants [Abstract]	'
Warrants	'
	Note 12 - Warrants
	The following is a summary of outstanding warrants as of March 31, 2014:
	Warrants		Exercise Price	Number of Warrants	Remaining
				Outstanding	Contractual Life
			US$		Years
	Series A investor warrants		4.58	1,320,696	0.67
	Series A placement agent warrants		5.5	117,261	0.67
	Total			1,437,957
	The fair values of the warrants as of March 31, 2014 were calculated using Black-Scholes option pricing model with the following assumptions:
		Series A Investor		Series A Placement
		Warrants		Agent Warrants
	Volatility	31.00%		31.00%
	Expected dividends yield	0%		0%
	Fair value of underlying common stock (per share)	5.23		5.23
	Risk-free interest rate (per annum)	0.10%		0.10%
	During the three-month period ended March 31, 2014, no warrants were exercised. On April 3, 2014, 130,435 Series A investor warrants were exercised for 130,435 shares of the common stocks of the Company. The Company received proceeds of US$596,740 in cash on April 3, 2014.

Stockholders_equity

Stockholders' equity	3 Months Ended
	Mar. 31, 2014
Stockholders' equity [Abstract]	'
Stockholders' equity	'
	Note 13 - Stockholders' equity
	The changes of each caption of stockholders' equity for the three-month period ended March 31, 2014 are as follows:
		Series B Preferred Stock		Common Stock								Accumulated	Total
												Other
		Number	Amount	Number	Amount	Treasury Stock			Additional Paid-in		Retained	Comprehensive	Stockholders'
		of Shares		of Shares					Capital		Earnings	Income	Equity
			US$		US$
	Balance as of January 1, 2014	1,000,000	100	47,875,133	4,789		(92,694	)	76,341,659		311,047,337	25,043,914		412,345,105
	Net income	-	-	-	-		-		-		21,996,051	-		21,996,051
	Other comprehensive loss	-	-	-	-		-		-		-	(14,188,735)		(14,188,735)
	Vesting of unvested shares	-	-	674,205	67		-		(67	)	-	-		-
	Stock based compensation	-	-	-	-		-		410,848		-	-		410,848
	Balance as of March 31, 2014	1,000,000	100	48,549,338	4,856		(92,694	)	76,752,440		333,043,388	10,855,179		420,563,269

Stock_based_compensation

Stock based compensation	3 Months Ended
	Mar. 31, 2014
Stock based compensation [Abstract]	'
Stock based compensation	'
	Note 14 - Stock based compensation
	The Company recognized US$9,791 of share-based compensation expense in general and administration expenses relating to stock options for the three-month periods ended March 31, 2013. All outstanding options expired on August 7, 2013.
	A summary of the nonvested shares activity for the three-month ended March 31, 2014 is as follows:
		Number of Nonvested		Weighted Average
		Shares		Grant date Fair Value
				US$
	Outstanding as of December 31, 2013		1,090,575		4.89
	Vested		-674,205		4.32
	Forfeited		-19,230		4.4
	Outstanding as of March 31, 2014		397,140		4.37
	The Company recognized US$410,848 and US$354,557 of compensation expense in general and administrative expenses relating to nonvested shares for the three-month periods ended March 31, 2014 and 2013, respectively. As of March 31, 2014, there was US$1,039,692 of total unrecognized compensation cost relating to nonvested shares, which is to be recognized over a weighted average period of 1.83 years.

Earnings_per_share

Earnings per share	3 Months Ended
	Mar. 31, 2014
Earnings per share [Abstract]	'
Earnings per share	'
	Note 15 - Earnings per share
	Basic and diluted earnings per share are calculated as follows:
		Three-Month Period Ended
		March 31,
		2014			2013
		US$			US$
	Numerator:
	Net income		21,996,051			14,450,855
	Less:
	Earnings allocated to participating Series D convertible preferred stock		(5,418,875	)		(3,608,385	)
	Earnings allocated to participating nonvested shares		(228,376	)		(85,812	)
	Net income for basic and dilutive earnings per share		16,348,800			10,756,658
	Denominator:
	Denominator for basic and diluted earnings per share		48,272,165			47,696,272
	Earnings per share:
	Basic and diluted		0.34			0.23
	The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods ended March 31, 2014 and 2013 because their effects are anti-dilutive:
		Three-Month Period Ended
		March 31,
		2014			2013
	Shares issuable upon conversion of Series D convertible preferred stock		16,000,000			16,000,000
	Shares issuable upon exercise of Series A investor warrant		1,320,696			1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		117,261			117,261
	Shares issuable upon exercise of Series C placement agent warrant		-			166,667
	Shares issuable upon exercise of stock options		-			148,500

Commitments_and_contingencies

Commitments and contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and contingencies [Abstract]	'
Commitments and contingencies	'
	Note 16 - Commitments and contingencies
	(1)	Lease commitments
	Future minimum lease payments under non-cancellable operating leases agreements as of March 31, 2014 were as follows.
			US$
	Period from April 1, 2014 to December 31, 2014			865,971
	Years ending December 31,
	2015			1,136,833
	2016			998,822
	2017			840,556
	2018			777,320
	2019 and thereafter			-
	Rental expenses incurred for operating leases of plant and equipment and office spaces were US$318,228 and US$218,167 for the three-month periods ended March 31, 2014 and 2013, respectively. There are no step rent provisions, escalation clauses, capital improvement funding requirements, other lease concessions or contingent rent in the lease agreements. The Company has no legal or contractual asset retirement obligations at the end of leases. The company's leases do not contain any contingent rent payments terms.
	-2	Plant construction
	Pursuant to the agreement with Harbin Shengtong Engineering Plastics Co. Ltd. ("Harbin Shengtong"), the Company has a remaining commitment of RMB83.9 million (equivalent to US$13.5 million) as of March 31, 2014, for the acquisition of the land use rights and a plant consisting of five workshops and a building (the "Project") in Harbin upon completion in exchange for a total consideration of RMB470 million (approximately US$75.6 million) in cash. Harbin Shengtong is responsible to complete the construction of the plant and workshops according to the Company's specifications.  Once the Project is fully completed and accepted by the Company, Harbin Shengtong shall transfer titles of various rights under the Project to the Company.  As of December 31, 2013, five workshops and the main building were completed and placed into the service by the Company.  The titles of the five workshops, the building and the related land use rights are expected to be transferred to the Company once the construction of certain ancillary facilities of the Project is completed in the second quarter of 2014.
	On March 8, 2013, Xinda Holding (HK) entered into an investment agreement with Shunqing Government, pursuant to which Xinda Holding (HK) will invest RMB1.8 billion (equivalent to US$290 million) in property, plant and equipment and approximately RMB0.6 billion (equivalent to US$97 million) in working capital, for the construction of Sichuan plant.

Basis_of_presentation_signific1

Basis of presentation, significant concentrations and risks (Policy)	3 Months Ended
	Mar. 31, 2014
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Basis of presentation	'
	(a) Basis of presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP"). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by rules and regulations of the United States Securities and Exchange Commission ("SEC"). The condensed consolidated balance sheet as of December 31, 2013 was derived from the audited consolidated financial statements of China XD Plastics Company Limited ("China XD") and subsidiaries (collectively, the "Company"). The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated balance sheet of the Company as of December 31, 2013, and the related consolidated statements of comprehensive income, changes in equity and cash flows for the year then ended, included in the Company's Annual Report on Form 10-K filed with the SEC on March 26, 2014.
	In the opinion of the management, all adjustments (which include normal recurring adjustments) necessary to present a fair statement of the financial position as of March 31, 2014, the results of operations and cash flows for the three-month periods ended March 31, 2014 and 2013, have been made.
	The preparation of consolidated financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant items subject to such estimates and assumptions include the recoverability of the carrying amounts of property, plant and equipment, the realizability of inventories, the useful lives of property, plant and equipment, the collectibility of accounts receivable, the fair values of stock-based compensation awards, and the accruals for tax uncertainties and other contingencies. The current economic environment has increased the degree of uncertainty inherent in those estimates and assumptions.
Significant concentrations and risks	'
	(b) Significant concentrations and risks
	Sales concentration
	The Company sells its products, substantially through approved distributors in the People's Republic of China (the "PRC").   The Company's sales are highly concentrated.  Sales to major distributors, which individually exceeded 10% of the Company's revenues, are as follows:
			For the Three-Month Period Ended March 31,
			2014					2013
			US$			%		US$		%
	Distributor A			37,462,622			16.80%		22,864,098		13.40%
	Distributor B			36,355,612			16.30%		43,531,918		25.50%
	Distributor C			33,197,485			14.80%		23,024,899		13.50%
	Distributor D			32,580,215			14.60%		43,001,855		25.20%
	Distributor E			32,533,393			14.60%		-		0%
	Distributor F			12,558,755			5.60%		22,921,894		13.40%
	Total			184,688,082			82.70%		155,344,664		91.00%
	The Company expects revenues from these distributors to continue to represent a substantial portion of its revenue in the future. Any factor adversely affecting the automobile industry in the PRC or the business operations of these customers will have a material effect on the Company's business, financial position and results of operations.
	Purchase concentration of raw materials and equipment
	The principal raw materials used for the Company's production of modified plastics products are plastic resins, such as polypropylene, ABS and nylon. During the three-month periods ended March 31, 2014 and 2013, the Company purchases its raw materials through seven and three distributors, which individually exceeded 10% of the Company's total raw material purchases, accounted for approximately 79.2% and 98.7%, respectively.  Management believes that other suppliers could provide similar raw materials on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect the Company's business, financial position and results of operations.
	The Company purchased equipment from a major equipment distributor, which accounted for 72.4% and 50.6% of the Company's total equipment purchases for the three-month periods ended March 31, 2014 and 2013, respectively. A change of the supplier could cause a delay in manufacturing and a possible loss of sales, which could adversely affect the Company's business, financial position and results of operations.  The majority owner of the equipment distributor is also the majority owner of a major raw material supplier that supplied approximately 1.6% and 19.3% of the Company's total raw material purchases for the three-month periods ended March 31, 2014 and 2013, respectively.  In addition, the majority owner of the equipment distributor is also the majority owner of sales Distributor C presented above.
	Cash concentration
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		March 31,		December 31,
		2014		2013
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC	431,176,930			389,522,815
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.	31,070			84,011
	Financial Institutions in the PRC	60,211,355			-
	Financial Institution in Hong Kong SAR	28,210,822			847,559
	Euro denominated bank deposits with:
	Financial institution in Hong Kong SAR	93,694			143,890
	HK dollar denominated bank deposits with:
	Financial institution in Hong Kong	50,053			-
	The bank deposits with financial institutions in the PRC are not insured by any government authority.  The bank deposits with financial institutions in the HK SAR are insured by the government authority up to HK$500,000. To limit exposure to credit risk, the Company primarily places bank deposits with large financial institutions in the PRC and HK SAR with acceptable credit rating.
	Short-term bank deposits that are pledged as collateral for bills payable relating to purchase of raw materials are reported as restricted cash and amounted to US$12,869,185 and US$3,964,518 as of March 31, 2014 and December 31, 2013, respectively. Upon maturity and repayment of the bills payable, which is generally within 6 months, the cash becomes available for use by the Company. Short-term bank deposits that are pledged as collateral for letter of credit relating to purchase of raw materials are reported as restricted cash and amounted to US$2,419,406 and US$$2,352,280 as of March 31, 2014 and December 31, 2013, respectively. The cash will be available for use by the Company 60 days from the issuance of the letter of credit. The cash flows from the pledged bank deposits, which relate to purchases of raw materials, are reported within cash flows from operating activities in the condensed consolidated statements of cash flows.
	Short-term bank deposits that are pledged as collateral for short-term bank borrowings are reported as restricted cash and amounted to US$9,933,402 and US$7,392,173 as of March 31, 2014 and December 31, 2013, respectively. The cash flows from such bank deposits are reported within cash flows from financing activities in the condensed consolidated statements of cash flows.

Basis_of_presentation_signific2

Basis of presentation, significant concentrations and risks (Tables)	3 Months Ended
	Mar. 31, 2014
Basis Of Presentation Significant Concentrations And Risks [Abstract]	'
Schedule of Sales Concentrations by Major Distributors	'
	Sales to major distributors, which individually exceeded 10% of the Company's revenues, are as follows:
			For the Three-Month Period Ended March 31,
			2014					2013
			US$			%		US$		%
	Distributor A			37,462,622			16.80%		22,864,098		13.40%
	Distributor B			36,355,612			16.30%		43,531,918		25.50%
	Distributor C			33,197,485			14.80%		23,024,899		13.50%
	Distributor D			32,580,215			14.60%		43,001,855		25.20%
	Distributor E			32,533,393			14.60%		-		0%
	Distributor F			12,558,755			5.60%		22,921,894		13.40%
	Total			184,688,082			82.70%		155,344,664		91.00%
Schedule of Cash and Cash Equivalents	'
	Cash and cash equivalents, restricted cash and time deposits maintained at banks consist of the following:
		March 31,		December 31,
		2014		2013
		US$		US$
	RMB denominated bank deposits with:
	Financial Institutions in the PRC	431,176,930			389,522,815
	U.S. dollar denominated bank deposits with:
	Financial Institution in the U.S.	31,070			84,011
	Financial Institutions in the PRC	60,211,355			-
	Financial Institution in Hong Kong SAR	28,210,822			847,559
	Euro denominated bank deposits with:
	Financial institution in Hong Kong SAR	93,694			143,890
	HK dollar denominated bank deposits with:
	Financial institution in Hong Kong	50,053			-

Accounts_receivable_Tables

Accounts receivable (Tables)	3 Months Ended
	Mar. 31, 2014
Accounts receivable [Abstract]	'
Schedule of Accounts Receivable	'
	Accounts receivable consists of the following:
		31-Mar-14			31-Dec-13
		US$			US$
	Accounts receivable		186,077,519			282,466,580
	Allowance for doubtful accounts		(130,685	)		(145,761	)
	Accounts receivable, net		185,946,834			282,320,819

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Schedule of Inventories	'
	Inventories consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Raw materials		220,578,414		135,120,514
	Work in progress		934,221		2,551,621
	Finished goods		15,552,875		7,213,553
	Total inventories		237,065,510		144,885,688

Prepaid_expenses_and_other_cur1

Prepaid expenses and other current assets (Tables)	3 Months Ended
	Mar. 31, 2014
Prepaid expenses and other current assets [Abstract]	'
Schedule of Prepaid Expense and Other Assets Current	'
	Prepaid expenses and other current assets consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Advances to suppliers		14,434,027		920,277
	Value added taxes receivables		8,255,872		3,924,767
	Interest receivable		3,259,567		2,405,666
	Other		640,131		1,167,433
	Total prepaid expenses and other current assets		26,589,597		8,418,143

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	3 Months Ended
	Mar. 31, 2014
Property, plant and equipment, net [Abstract]	'
Schedule of Property, Plant and Equipment	'
	Property, plant and equipment consist of the following:
		31-Mar-14			December 31, 2013
		US$			US$
	Machinery, equipment and furniture		205,062,045			209,921,805
	Motor vehicles		1,543,017			1,580,877
	Workshops and buildings		60,588,861			62,217,256
	Construction in progress		5,983,163			4,807,666
	Total property, plant and equipment		273,177,086			278,527,604
	Less accumulated depreciation		(49,014,912	)		(44,685,869	)
	Property, plant and equipment, net		224,162,174			233,841,735
Schedule of the Allocation of Depreciation Expense on Property, Plant and Equipment	'
	Depreciation expense on property, plant and equipment was allocated to the following expense items:
		Three-Month Period Ended
		March 31,
		2014			2013
		US$			US$
	Cost of revenues		4,870,655			4,163,505
	General and administrative expenses		302,281			640,866
	Research and development expenses		432,009			367,983
	Total depreciation expense		5,604,945			5,172,354

Accrued_expenses_and_other_cur1

Accrued expenses and other current liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Accrued expenses and other current liabilities [Abstract]	'
Schedule of Accrued Expenses and Other Current Liabilities	'
	Accrued expenses and other current liabilities consist of the following:
		31-Mar-14		31-Dec-13
		US$		US$
	Payables for purchase of property, plant and equipment		43,268,755		44,510,678
	Accrued freight expenses		1,190,761		5,010,341
	Others		7,976,933		6,371,985
	Total accrued expenses and other current liabilities		52,436,449		55,893,004

Borrowings_Tables

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2014
Borrowings [Abstract]	'
Schedule of Short-term Loans	'
				31-Mar-14			31-Dec-13
				US$			US$
	Unsecured loans				118,084,392			169,027,897
	Loans secured by accounts receivable				65,632,842			100,434,445
	Loans secured by bank deposits				49,667,010			36,960,867
	Total short-term bank loans	(i)			233,384,244			306,423,209
	Interest-free loan secured by land use rights	(ii)			8,043,241			8,259,411
	Total short-term loans				241,427,485			314,682,620
Schedule of Long-Term Debt	'
			31-Mar-14			31-Dec-13
			US$			US$
	Unsecured loans			27,347,018			-
	Total long-term bank loans			27,347,018			-

Notes_Payable_Tables

Notes Payable (Tables)	3 Months Ended
	Mar. 31, 2014
Notes Payable [Abstract]	'
Schedule of Debt Redemption	'
	On or after February 4, 2017, the Company may on any or more occasions redeem all or any part of the Notes, at the redemption prices (expressed as percentages of principal amount) set forth below, plus accrued and unpaid interest, if any, on the Notes redeemed, to (but not including) the applicable date of redemption, if redeemed during the twelve-month period beginning on February 4 of the years indicated below:
	Year	Redemption Price
	2017		105.875	%
	2018		102.938	%

Related_party_transactions_Tab

Related party transactions (Tables)	3 Months Ended
	Mar. 31, 2014
Related party transactions [Abstract]	'
Schedule of Significant Related Party Transactions	'
	The significant related party transactions are summarized as follows:
		Three-Month Period Ended March 31,
		2014		2013
		US$		US$
	Costs and expenses resulting from transactions with  related parties:
	Rental expenses for plant and office spaces		199,911		198,052
Schedule of Amounts Due From To Related Parties	'
	The balance due from a related party is summarized as follows:
		31-Mar-14		31-Dec-13
		US$		US$
	Amounts due from a related party:
	Prepaid rent expenses to Xinda High-Tech		27,662		225,752
	Prepaid rent expenses to Mr. Han's Son		12,065		-
	Total		39,727		225,752
Schedule of Plant and Office Buildings in Harbin	'
	The Company rents the following plant and office buildings in Harbin, Heilongjiang province from Xinda High-Tech:
	Premise Leased	Area (M2)		Annual Rental Fee (US$)		Period of Lease
	Plant and office building		20,250		671,995	Between May 1, 2012 and December 31, 2013
	Office building		250		8,195	Between January 1, 2012 and December 31, 2013
	Office building		3,394		111,259	Between May 1, 2012 and April 30, 2013
	Office building		3,394		111,259	Between May 1, 2013 and December 31, 2013
	Office building		23,894		783,253	Between January 1, 2014 and December 31, 2018

Warrants_Tables

Warrants (Tables)	3 Months Ended
	Mar. 31, 2014
Warrants [Abstract]	'
Summary of Outstanding Warrants	'
	The following is a summary of outstanding warrants as of March 31, 2014:
	Warrants		Exercise Price	Number of Warrants	Remaining
				Outstanding	Contractual Life
			US$		Years
	Series A investor warrants		4.58	1,320,696	0.67
	Series A placement agent warrants		5.5	117,261	0.67
	Total			1,437,957
Warrants Fair Value Assumptions	'
	The fair values of the warrants as of March 31, 2014 were calculated using Black-Scholes option pricing model with the following assumptions:
		Series A Investor		Series A Placement
		Warrants		Agent Warrants
	Volatility	31.00%		31.00%
	Expected dividends yield	0%		0%
	Fair value of underlying common stock (per share)	5.23		5.23
	Risk-free interest rate (per annum)	0.10%		0.10%

Stockholders_equity_Tables

Stockholders' equity (Tables)	3 Months Ended
	Mar. 31, 2014
Stockholders' equity [Abstract]	'
Schedule of Changes in Stockholders' Equity	'
	The changes of each caption of stockholders' equity for the three-month period ended March 31, 2014 are as follows:
		Series B Preferred Stock		Common Stock								Accumulated	Total
												Other
		Number	Amount	Number	Amount	Treasury Stock			Additional Paid-in		Retained	Comprehensive	Stockholders'
		of Shares		of Shares					Capital		Earnings	Income	Equity
			US$		US$
	Balance as of January 1, 2014	1,000,000	100	47,875,133	4,789		(92,694	)	76,341,659		311,047,337	25,043,914		412,345,105
	Net income	-	-	-	-		-		-		21,996,051	-		21,996,051
	Other comprehensive loss	-	-	-	-		-		-		-	(14,188,735)		(14,188,735)
	Vesting of unvested shares	-	-	674,205	67		-		(67	)	-	-		-
	Stock based compensation	-	-	-	-		-		410,848		-	-		410,848
	Balance as of March 31, 2014	1,000,000	100	48,549,338	4,856		(92,694	)	76,752,440		333,043,388	10,855,179		420,563,269

Stock_based_compensation_Table

Stock based compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Stock based compensation [Abstract]	'
Schedule of Nonvested Share Activity	'
	A summary of the nonvested shares activity for the three-month ended March 31, 2014 is as follows:
		Number of Nonvested		Weighted Average
		Shares		Grant date Fair Value
				US$
	Outstanding as of December 31, 2013		1,090,575		4.89
	Vested		-674,205		4.32
	Forfeited		-19,230		4.4
	Outstanding as of March 31, 2014		397,140		4.37

Earnings_per_share_Tables

Earnings per share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings per share [Abstract]	'
Calculation of Basic and Diluted Earnings Per Share	'
	Basic and diluted earnings per share are calculated as follows:
		Three-Month Period Ended
		March 31,
		2014			2013
		US$			US$
	Numerator:
	Net income		21,996,051			14,450,855
	Less:
	Earnings allocated to participating Series D convertible preferred stock		(5,418,875	)		(3,608,385	)
	Earnings allocated to participating nonvested shares		(228,376	)		(85,812	)
	Net income for basic and dilutive earnings per share		16,348,800			10,756,658
	Denominator:
	Denominator for basic and diluted earnings per share		48,272,165			47,696,272
	Earnings per share:
	Basic and diluted		0.34			0.23
Summary of Potentially Dilutive Securities	'
	The following table summarizes potentially dilutive securities excluded from the calculation of diluted earnings per share for the three-month periods ended March 31, 2014 and 2013 because their effects are anti-dilutive:
		Three-Month Period Ended
		March 31,
		2014			2013
	Shares issuable upon conversion of Series D convertible preferred stock		16,000,000			16,000,000
	Shares issuable upon exercise of Series A investor warrant		1,320,696			1,320,696
	Shares issuable upon exercise of Series A placement agent warrant		117,261			117,261
	Shares issuable upon exercise of Series C placement agent warrant		-			166,667
	Shares issuable upon exercise of stock options		-			148,500

Commitments_and_contingencies_

Commitments and contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
Commitments and contingencies [Abstract]	'
Schedule of Future Minimum Rental Payments	'
	Future minimum lease payments under non-cancellable operating leases agreements as of March 31, 2014 were as follows.
		US$
	Period from April 1, 2014 to December 31, 2014		865,971
	Years ending December 31,
	2015		1,136,833
	2016		998,822
	2017		840,556
	2018		777,320
	2019 and thereafter		-

Basis_of_presentation_signific3

Basis of presentation, significant concentrations and risks (Sales and Purchase Concentration) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Concentration Risk [Line Items]	'	'
Revenues	$223,580,675	$170,967,571
Equipment Supplier Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Concentration risk, number of customers	1	1
Concentration risk, percentage	72.40%	50.60%
Supplier Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Concentration risk, number of customers	7	3
Concentration risk, percentage	79.20%	98.70%
Supplier Concentration Risk [Member] | Major Customer [Member]	'	'
Concentration Risk [Line Items]	'	'
Concentration risk, percentage	1.60%	19.30%
Revenues [Member] | Distributor A [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	37,462,622	22,864,098
Concentration risk, percentage	16.80%	13.40%
Revenues [Member] | Distributor B [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	36,355,612	43,531,918
Concentration risk, percentage	16.30%	25.50%
Revenues [Member] | Distributor C [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	33,197,485	23,024,899
Concentration risk, percentage	14.80%	13.50%
Revenues [Member] | Distributor D [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	32,580,215	43,001,855
Concentration risk, percentage	14.60%	25.20%
Revenues [Member] | Distributor E [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	32,533,393	'
Concentration risk, percentage	14.60%	0.00%
Revenues [Member] | Distributor F [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	12,558,755	22,921,894
Concentration risk, percentage	5.60%	13.40%
Revenues [Member] | Major Distributors Aggregate [Member]	'	'
Concentration Risk [Line Items]	'	'
Revenues	$184,688,082	$155,344,664
Concentration risk, percentage	82.70%	91.00%

Basis_of_presentation_signific4

Basis of presentation, significant concentrations and risks (Cash Concentration) (Details)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

USD ($)

USD ($)

RMB denominated bank deposits with financial institutions in the PRC [Member]

RMB denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with a financial institution in the U.S. [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with financial institutions in the PRC [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong SAR [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong SAR [Member]

U.S. dollar denominated bank deposits with a financial institution in Hong Kong SAR [Member]

Euro denominated bank deposits with a financial institution in Hong Kong SAR [Member]

Euro denominated bank deposits with a financial institution in Hong Kong SAR [Member]

Short-term bank deposits pledged as collateral for bills payable relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for bills payable relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for letter of credit relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for letter of credit relating to purchase of raw materials [Member]

Short-term bank deposits pledged as collateral for short-term bank borrowings [Member]

Short-term bank deposits pledged as collateral for short-term bank borrowings [Member]

Certificates of Deposit [Member]

HK dollar denominated bank deposits with Financial institution in Hong Kong [Member]

HK dollar denominated bank deposits with Financial institution in Hong Kong [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

CNY

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Restricted Cash and Cash Equivalents Items [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash, cash equivalents, restricted cash and time deposits maintained at banks

'

'

$431,176,930

$389,522,815

$31,070

$84,011

$60,211,355

'

$28,210,822

'

$847,559

$93,694

$143,890

'

'

'

'

'

'

'

$50,053

'

Restricted cash

25,221,993

13,708,971

'

'

'

'

'

'

'

'

'

'

'

12,869,185

3,964,518

2,419,406

2,352,280

9,933,402

7,392,173

'

'

'

Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'60 days

'

'

Cash balance insured by the government authority

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

'

Accounts_receivable_Details

Accounts receivable (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Accounts receivable [Abstract]	'	'
Accounts receivables	$186,077,519	$282,466,580
Allowance for doubtful accounts	-130,685	-145,761
Accounts receivable, net	185,946,834	282,320,819
Notes receivable	7,919,980	7,481,629
Accounts receivable pledged as collateral for short-term bank loans	$82,316,526	$133,778,940

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Inventories [Abstract]	'	'
Raw materials	$220,578,414	$135,120,514
Work in progress	934,221	2,551,621
Finished goods	15,552,875	7,213,553
Total inventories	$237,065,510	$144,885,688

Prepaid_expenses_and_other_cur2

Prepaid expenses and other current assets (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Prepaid expenses and other current assets [Abstract]	'	'
Advances to suppliers	$14,434,027	$920,277
Value added taxes receivables	8,255,872	3,924,767
Interest receivable	3,259,567	2,405,666
Other	640,131	1,167,433
Total prepaid expenses and other current assets	$26,589,597	$8,418,143

Property_plant_and_equipment_n2

Property, plant and equipment, net (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	$273,177,086	$278,527,604
Less accumulated depreciation	-49,014,912	-44,685,869
Property, plant and equipment, net	224,162,174	233,841,735
Machinery, equipment and furniture [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	205,062,045	209,921,805
Motor vehicles [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	1,543,017	1,580,877
Workshops and buildings [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	60,588,861	62,217,256
Construction in progress [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, plant and equipment	$5,983,163	$4,807,666

Property_plant_and_equipment_n3

Property, plant and equipment, net (Allocated Depreciation Expense) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]	'	'
Depreciation expenses	$5,604,945	$5,172,354
Cost of revenues [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation expenses	4,870,655	4,163,505
General and administration expenses [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation expenses	302,281	640,866
Research and development expenses [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation expenses	$432,009	$367,983

Accrued_expenses_and_other_cur2

Accrued expenses and other current liabilities (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Accrued expenses and other current liabilities [Abstract]	'	'
Payables for purchase of property, plant and equipment	$43,268,755	$44,510,678
Accrued freight expenses	1,190,761	5,010,341
Other	7,976,933	6,371,985
Total accrued expenses and other current liabilities	$52,436,449	$55,893,004

Fair_value_measurement_Details

Fair value measurement (Details) (USD $)	Mar. 31, 2014
Fair value measurement [Abstract]	'
Notes payable	$148,431,718
Estimated fair value of notes payable	$154,782,000

Borrowings_Current_Details

Borrowings (Current) (Details)

Mar. 31, 2014

Dec. 31, 2013

Apr. 11, 2013

Apr. 11, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

USD ($)

USD ($)

USD ($)

CNY

Unsecured loans [Member]

Unsecured loans [Member]

Loans secured by bank deposits [Member]

Loans secured by bank deposits [Member]

Loans secured by accounts receivable [Member]

Loans secured by accounts receivable [Member]

Total short-term bank loans [Member]

Total short-term bank loans [Member]

Interest-free loan secured by land use rights [Member]

Interest-free loan secured by land use rights [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Short-term Debt [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term loans

$241,427,485

$314,682,620

'

'

$118,084,392

$169,027,897

$49,667,010

$36,960,867

$65,632,842

$100,434,445

$233,384,244

[1]

$306,423,209

[1]

$8,043,241

[2]

$8,259,411

[2]

Weighted average interest rate

5.80%

5.90%

'

'

'

'

'

'

'

'

'

'

'

'

Interest-free loan secured loan

'

'

$8,000,000

50,000,000

'

'

'

'

'

'

'

'

'

'

[1]

As of March 31, 2014 and December 31, 2013, the Company's short-term bank loans bear a weighted average interest rate of 5.8% and 5.9% per annum, respectively. All short-term bank loans mature at various times within one year and contain no renewal terms.

[2]

On April 11, 2013, the Company obtained a one-year interest-free loan in the amount of RMB50.0 million (equivalent to US$8.0 million) from a company affiliated with the People's Government of Shunqing District, Nanchong City, Sichuan Province ("Shunqing Government"). The loan was issued to support the Company's construction of a production plant in Sichuan. The loan will be secured by a land use right to be granted to the Company in connection with the construction.

Borrowings_Noncurrent_Details

Borrowings (Non-current) (Details)

1 Months Ended

3 Months Ended

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 18, 2014

Mar. 18, 2014

Jan. 17, 2014

Jan. 17, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

USD ($)

CNY

USD ($)

CNY

USD ($)

CNY

USD ($)

Unsecured loans [Member]

Unsecured loans [Member]

Line of credit from a bank in Hong Kong SAR [Member]

Line of credit with remaining terms less than 12 months [Member]

Line of credit with remaining terms less than 12 months [Member]

Line of credit with remaining terms beyond 12 months [Member]

Line of credit with remaining terms beyond 12 months [Member]

USD ($)

USD ($)

USD ($)

USD ($)

CNY

USD ($)

CNY

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term bank loans

'

$27,347,018

'

'

'

'

'

'

$27,347,018

'

'

'

'

'

'

Long-term debt repayments

'

4,800,000

30,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Total lines of credit

'

483,300,000

3,004,400,000

'

'

'

'

'

'

'

48,500,000

'

'

'

'

Unusued lines of credit

'

'

'

'

'

'

'

'

'

'

'

163,100,000

1,013,600,000

59,500,000

370,000,000

Unsecured loan

'

'

'

$8,000,000

50,000,000

$24,100,000

150,000,000

'

'

'

'

'

'

'

'

Initial term of loan

'15 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

6.15%

6.15%

110.00%

110.00%

'

'

'

'

'

'

'

'

Notes_Payable_Details

Notes Payable (Details) (USD $)	1 Months Ended
	Feb. 04, 2014
Notes Payable [Abstract]	'
Principal amount of debt	$150,000,000
Notes payable, interest rate	11.75%
Maturity date	4-Feb-19
Issuance price percentage	99.08%
Payment start date	4-Aug-14
Net proceeds from Guaranteed Senior Notes	143,500,000
Deferred issuance costs	$4,900,000
Change of Control [Member]	'
Debt Instrument, Redemption [Line Items]	'
Redemption price, percentage of principal	101.00%
Prior to February 4, 2017 [Member] | Debt redeemed in whole [Member]	'
Debt Instrument, Redemption [Line Items]	'
Redemption price, percentage of principal	100.00%
Percentage of principal amount redeemed	100.00%
Redemption period end date	4-Feb-17
Prior to February 4, 2017 [Member] | Debt redeemed up to 35% [Member]	'
Debt Instrument, Redemption [Line Items]	'
Redemption price, percentage of principal	111.75%
Percentage of principal amount redeemed	35.00%
Required percentage of principal remaining outstanding after redemption	65.00%
Redemption period end date	4-Feb-17
February 4, 2017 to February 4, 2017 [Member]	'
Debt Instrument, Redemption [Line Items]	'
Redemption price, percentage of principal	105.88%
February 4, 2018 to February 4, 2019 [Member]	'
Debt Instrument, Redemption [Line Items]	'
Redemption price, percentage of principal	102.94%

Related_party_transactions_Sch

Related party transactions (Schedule of Significant Related Party Transactions) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Related party transactions [Abstract]	'	'
Rental expenses for plant and office spaces	$199,911	$198,052

Related_party_transactions_Sch1

Related party transactions (Schedule of Amounts Due From Related Parties) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	$39,727	$225,752
Xinda High-Tech [Member]	'	'
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	27,662	225,752
Mr. Han's son [Member]	'	'
Related Party Transaction [Line Items]	'	'
Prepaid rent expenses to related party	$12,065	'

Related_party_transactions_Sch2

Related party transactions (Schedule of Plant and Office Buildings in Harbin) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
	Plant and Office Building 1 [Member]	Office Building 1 [Member]	Office Building 2 [Member]	Office Building 3 [Member]	Office Building 4 [Member]	Facility [Member]	Facility [Member]
	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	Mr. Han's son [Member]	Mr. Han's son [Member]
	sqm	sqm	sqm	sqm	sqm	USD ($)	CNY
						sqm
Related Party Transaction [Line Items]	'	'	'	'	'	'	'
Annual Rental Fee	$671,995	$8,195	$111,259	$111,259	$783,253	$16,390	100,000
Area (Square Meters)	20,250	250	3,394	3,394	23,894	3,134	3,134
Lease start date	1-May-12	1-Jan-12	1-May-12	1-May-13	1-Jan-14	1-Jan-14	1-Jan-14
Lease expiration period	31-Dec-13	31-Dec-13	30-Apr-13	31-Dec-13	31-Dec-18	31-Dec-14	31-Dec-14

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax [Line Items]	'	'
Effective income tax rate	24.70%	25.70%
PRC statutory income tax rate	25.00%	'
Unrecognized tax benefits	$8,832,514	'
Interest relating to unrecognized tax benefits	$476,193	'
Sichuan Xinda [Member]	'	'
Income Tax [Line Items]	'	'
PRC statutory income tax rate	15.00%	'

Warrants_Summary_of_Outstandin

Warrants (Summary of Outstanding Warrants) (Details)	Mar. 31, 2014
Class of Warrant or Right [Line Items]	'
Number of Warrants Outstanding	1,437,957
Series A Investors Warrants [Member]	'
Class of Warrant or Right [Line Items]	'
Exercise Price	4.58
Number of Warrants Outstanding	1,320,696
Remaining Contractual Life	'8 months 1 day
Series A Placement Agents Warrants [Member]	'
Class of Warrant or Right [Line Items]	'
Exercise Price	5.5
Number of Warrants Outstanding	117,261
Remaining Contractual Life	'8 months 1 day

Warrants_Warrants_Fair_Value_A

Warrants (Warrants Fair Value Assumptions) (Details) (USD $)	1 Months Ended	3 Months Ended		3 Months Ended
	Apr. 30, 2014	Mar. 31, 2014	Apr. 03, 2014	Mar. 31, 2014
		Series A Investors Warrants [Member]	Series A Investors Warrants [Member]	Series A Placement Agents Warrants [Member]
Share-based Goods and Nonemployee Services Transaction [Line Items]	'	'	'	'
Volatility	'	31.00%	'	31.00%
Expected dividend yield	'	0.00%	'	0.00%
Fair value of underlying common stock (per share)	'	$5.23	'	$5.23
Risk-free interest rate (per annum)	'	0.10%	'	0.10%
Proceeds from exercises of warrants	$596,740	'	'	'
Warrant exercise for common stock shares	'	'	130,435	'

Stockholders_equity_Details

Stockholders' equity (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	$412,345,105	'
Net income	21,996,051	14,450,855
Other comprehensive income	-14,188,735	'
Vesting of unvested shares	'	'
Stock based compensation	410,848	'
Balance as of March 31, 2014	420,563,269	'
Series B Preferred Stock [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	100	'
Balance as of January 1, 2014, shares	1,000,000	'
Net income	'	'
Other comprehensive income	'	'
Vesting of unvested shares	'	'
Vesting of unvested shares, shares	'	'
Stock based compensation	'	'
Balance as of March 31, 2014	100	'
Balance as of March 31, 2014, shares	1,000,000	'
Common Stock [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	4,789	'
Balance as of January 1, 2014, shares	47,875,133	'
Net income	'	'
Other comprehensive income	'	'
Vesting of unvested shares	67	'
Vesting of unvested shares, shares	674,205	'
Stock based compensation	'	'
Balance as of March 31, 2014	4,856	'
Balance as of March 31, 2014, shares	48,549,338	'
Treasury Stock [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	-92,694	'
Net income	'	'
Other comprehensive income	'	'
Vesting of unvested shares	'	'
Stock based compensation	'	'
Balance as of March 31, 2014	-92,694	'
Additional Paid-in Capital [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	76,341,659	'
Net income	'	'
Other comprehensive income	'	'
Vesting of unvested shares	-67	'
Stock based compensation	410,848	'
Balance as of March 31, 2014	76,752,440	'
Retained Earnings [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	311,047,337	'
Net income	21,996,051	'
Other comprehensive income	'	'
Vesting of unvested shares	'	'
Stock based compensation	'	'
Balance as of March 31, 2014	333,043,388	'
Accumulated Other Comprehensive Income [Member]	'	'
Stockholders Equity [Line Items]	'	'
Balance as of January 1, 2014	25,043,914	'
Net income	'	'
Other comprehensive income	-14,188,735	'
Vesting of unvested shares	'	'
Stock based compensation	'	'
Balance as of March 31, 2014	$10,855,179	'

Stock_based_compensation_Narra

Stock based compensation (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stock Options [Member] | General and administration expenses [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	'	$9,791
Nonvested Shares [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Unrecognized compensation cost	1,039,692	'
Unrecognized compensation cost, recognition period	'1 year 9 months 29 days	'
Nonvested Shares [Member] | General and administration expenses [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Stock based compensation expense	$410,848	$354,557

Stock_based_compensation_Summa

Stock based compensation (Summary of Nonvested Shares Activity) (Details) (Nonvested Shares [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Nonvested Shares [Member]	'
Number of Nonvested Shares	'
Balance as of December 31, 2013	1,090,575
Vested	-674,205
Forfeited	-19,230
Outstanding as of March, 31, 2014	397,140
Weighted Average Grant Date Fair Value Per Share	'
Balance as of December 31, 2013	$4.89
Vested	$4.32
Forfeited	$4.40
Outstanding as of March, 31, 2014	$4.37

Earnings_per_share_Calculation

Earnings per share (Calculation of Basic and Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share Note [Line Items]	'	'
Net income	$21,996,051	$14,450,855
Net income for basic and dilutive earnings per share	16,348,800	10,756,685
Denominator for basic and diluted earnings per share	48,272,165	47,696,272
Basic and diluted	$0.34	$0.23
Convertible Preferred Stock Series D [Member]	'	'
Earnings Per Share Note [Line Items]	'	'
Less: earnings allocated to participating	-5,418,875	-3,608,385
Nonvested Shares [Member]	'	'
Earnings Per Share Note [Line Items]	'	'
Less: earnings allocated to participating	($228,376)	($85,812)

Earnings_per_share_Summary_of_

Earnings per share (Summary of Potentially Dilutive Securities) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Convertible Preferred Stock Series D [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Shares issuable upon exercise	16,000,000	16,000,000
Series A Investors Warrants [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Shares issuable upon exercise	1,320,696	1,320,696
Series A Placement Agents Warrants [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Shares issuable upon exercise	117,261	117,261
Series C Placement Agents Warrants [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Shares issuable upon exercise	'	166,667
Stock Options [Member]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'
Shares issuable upon exercise	'	148,500

Commitments_and_contingencies_1

Commitments and contingencies (Narrative) (Details)	3 Months Ended				1 Months Ended
	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013
	Land Use Right, Plant, and Building [Member]	Land Use Right, Plant, and Building [Member]	Total Consideration for Plant [Member]	Total Consideration for Plant [Member]	Property, Plant and Equipment [Member]	Property, Plant and Equipment [Member]	Working Capital [Member]	Working Capital [Member]
	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY	USD ($)	CNY
Long-term Purchase Commitment [Line Items]	'	'	'	'	'	'	'	'
Commitments	$13,500,000	83,900,000	$75,600,000	470,000,000	$290,000,000	1,800,000,000	$97,000,000	600,000,000

Commitments_and_contingencies_2

Commitments and contingencies (Schedule of Future Minimum Rental Payments) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Commitments and contingencies [Abstract]	'	'
Period from April 1, 2014 to December 31, 2014	$865,971	'
2015	1,136,833	'
2016	998,822	'
2017	840,556	'
2018	777,320	'
2019 and thereafter	'	'
Operating lease rental expense, plant, equipment and office spaces	$318,228	$218,167