Consolidated Statements of Income and Comprehensive Income (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
REVENUE      
Revenue $ 233,427,011 $ 112,295,158 $ 53,673,848
Revenue - related party    10,372,611 13,787,620
Total Revenue 233,427,011 122,667,769 67,461,468
COST OF REVENUE      
Cost of revenue 155,840,823 68,403,097 34,040,301
Cost of revenue - related party    6,580,193 7,530,171
Total Cost of Revenue 155,840,823 74,983,290 41,570,472
GROSS PROFIT 77,586,188 47,684,479 25,890,996
OPERATING EXPENSES:      
Selling 2,673,213 1,618,278 647,850
General and administrative 4,537,351 3,191,637 463,501
Total Operating Expenses 7,210,564 4,809,915 1,111,351
INCOME FROM OPERATIONS 70,375,624 42,874,564 24,779,645
OTHER INCOME (EXPENSE):      
Interest income 16,772 8,250 3,276
Interest expense (4,815,670) (3,301,696) (2,876,253)
Foreign currency transaction (loss) gain (258,248) 144,740 (5,113)
Grant income 20,094,039 7,338,273 2,363,575
Investment income 348,523 69,519 15,138
Other (expense) income (335) 2,144   
Total Other Income (Expense), net 15,385,081 4,261,230 (499,377)
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 85,760,705 47,135,794 24,280,268
INCOME TAXES         
NET INCOME FROM CONTINUING OPERATIONS 85,760,705 47,135,794 24,280,268
NET INCOME FROM DISCONTINUED OPERATIONS, NET OF INCOME TAX    51,910,662 84,494,428
NET INCOME 85,760,705 99,046,456 108,774,696
COMPREHENSIVE INCOME:      
Net income 85,760,705 99,046,456 108,774,696
OTHER COMPREHENSIVE INCOME      
Foreign currency translation (loss) gain (552,656) 8,195,045 4,113,599
Unrealized change in fair value of available-for-sale investment       (717)
TOTAL COMPREHENSIVE INCOME $ 85,208,049 $ 107,241,501 $ 112,887,578
BASIC AND DILUTED EARNINGS PER SHARE      
From continuing operations $ 1.08 $ 0.60 $ 0.32
From discontinued operations $ 0.00 $ 0.66 $ 1.09
Net income $ 1.08 $ 1.26 $ 1.41
WEIGHTED AVERAGE ORDINARY SHARES OUTSTANDING:      
Basic and diluted 79,055,053 78,772,743 77,215,000