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QUARTERLY FINANCIAL DATA (Unaudited) - Summarized quarterly financial data (Details)
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3 Months Ended |
12 Months Ended |
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Dec. 31, 2014
CNY
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Sep. 30, 2014
CNY
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Jun. 30, 2014
CNY
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Mar. 31, 2014
CNY
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Dec. 31, 2013
CNY
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Sep. 30, 2013
CNY
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Jun. 30, 2013
CNY
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Mar. 31, 2013
CNY
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Dec. 31, 2014
USD ($)
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Dec. 31, 2014
CNY
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Dec. 31, 2013
USD ($)
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Dec. 31, 2013
CNY
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Dec. 31, 2012
USD ($)
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Dec. 31, 2012
CNY
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| Quarterly Financial Information Disclosure [Abstract] |
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| Sales |
438,261,778 |
378,260,046 |
402,487,008 |
253,035,775 |
387,140,688 |
425,926,695 |
364,015,592 |
220,777,799 |
$ 241,007,000 |
1,472,045,000 |
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1,397,861,000 |
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1,324,952,000 |
| Gross profit |
123,827,223 |
123,947,540 |
134,844,876 |
78,324,882 |
100,596,341 |
148,023,358 |
126,597,747 |
73,562,227 |
75,467,000 |
460,945,000 |
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448,780,000 |
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432,910,000 |
| Net income from continuing operations |
26,957,036 |
26,146,348 |
32,364,810 |
9,289,887 |
24,920,607 |
43,283,357 |
27,246,301 |
7,170,983 |
18,306,000 |
111,809,000 |
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119,200,000 |
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102,856,000 |
| Net income |
26,957,036 |
26,146,348 |
32,364,810 |
9,289,887 |
24,920,607 |
43,283,357 |
27,246,301 |
7,170,983 |
$ 15,514,000 |
94,758,000 |
$ 16,600,000 |
102,621,000 |
$ 14,100,000 |
88,493,000 |
| Earnings per share - Basic (in dollars per share) |
1.66 |
1.61 |
2.00 |
0.57 |
1.53 |
2.66 |
1.69 |
0.44 |
$ 1.02 |
6.32 |
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6.32 |
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5.47 |
| Earnings per share - Diluted (in dollars per share) |
1.62 |
1.57 |
1.95 |
0.56 |
1.49 |
2.60 |
1.64 |
0.41 |
$ 0.99 |
6.14 |
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6.14 |
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5.29 |