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Segment Information (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Segment reporting information revenue [Abstract]      
Revenue $ 15,646,465us-gaap_Revenues $ 17,635,271us-gaap_Revenues  
Depreciation 2,074,507us-gaap_Depreciation 1,965,274us-gaap_Depreciation  
Interest expense 57,343us-gaap_InterestExpense 57,727us-gaap_InterestExpense  
Net income (loss) 1,242,434us-gaap_ProfitLoss 2,396,358us-gaap_ProfitLoss  
Identifiable long-lived tangible assets by segment 68,309,458us-gaap_IntangibleAssetsNetExcludingGoodwill   70,051,137us-gaap_IntangibleAssetsNetExcludingGoodwill
Identifiable long-lived tangible assets by geographical location 68,309,458cws_TangibleAssetsNet   70,051,137cws_TangibleAssetsNet
Forged Rolled Rings and Related Components [Member]      
Segment reporting information revenue [Abstract]      
Revenue 7,273,612us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 8,257,133us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		  
Depreciation 698,441us-gaap_Depreciation
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 1,217,058us-gaap_Depreciation
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		  
Interest expense 8,104us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 22,565us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		  
Net income (loss) 613,663us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 1,229,436us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		  
Identifiable long-lived tangible assets by segment 22,013,701us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 [1]   38,937,371us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_ForgedRolledRingsAndRelatedComponentsMember		 [1]
Dyeing and Finishing Equipment [Member]      
Segment reporting information revenue [Abstract]      
Revenue 6,523,352us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		 9,378,138us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		  
Depreciation 862,084us-gaap_Depreciation
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		 748,216us-gaap_Depreciation
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		  
Interest expense 35,658us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		 35,162us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		  
Net income (loss) 748,216us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		 1,345,556us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		  
Identifiable long-lived tangible assets by segment 29,977,227us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember		   30,691,226us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_DyeingAndFinishingEquipmentMember
Petroleum And Chemical Equipment [Member]      
Segment reporting information revenue [Abstract]      
Revenue 1,849,501us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= cws_PetroleumAndChemicalEquipmentMember		     
Depreciation 513,982us-gaap_Depreciation
/ us-gaap_StatementBusinessSegmentsAxis
= cws_PetroleumAndChemicalEquipmentMember		     
Interest expense 13,581us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= cws_PetroleumAndChemicalEquipmentMember		     
Net income (loss) 226,429us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_PetroleumAndChemicalEquipmentMember		     
Identifiable long-lived tangible assets by segment 15,893,957us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_PetroleumAndChemicalEquipmentMember		 [1]      [1]
Equipment Held For Sale [Member]      
Segment reporting information revenue [Abstract]      
Identifiable long-lived tangible assets by segment 424,573us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_EquipmentHeldForSaleMember		   422,540us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= cws_EquipmentHeldForSaleMember
Other [Member]      
Segment reporting information revenue [Abstract]      
Net income (loss) (345,874)us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_OtherSegmentMember		 [2] (178,634)us-gaap_ProfitLoss
/ us-gaap_StatementBusinessSegmentsAxis
= cws_OtherSegmentMember		 [2]  
China [Member]      
Segment reporting information revenue [Abstract]      
Identifiable long-lived tangible assets by geographical location 68,309,458cws_TangibleAssetsNet
/ us-gaap_StatementGeographicalAxis
= country_CN		   70,051,137cws_TangibleAssetsNet
/ us-gaap_StatementGeographicalAxis
= country_CN
United States [Member]      
Segment reporting information revenue [Abstract]      
Identifiable long-lived tangible assets by geographical location        
[1] Reflects reclassification of property and equipment previously used in the forged rolled rings and related components segment to petroleum and chemical equipment segment.
[2] The Company does not allocate any general and administrative expense of its U.S. activities to its reportable segments, because these activities are managed at a corporate level.