Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Revenues:
Revenues	$ 17,343,723	$ 11,676,696	$ 39,585,815	$ 41,851,257
Depreciation:
Depreciation	1,627,258	1,147,409	4,719,769	3,651,168
Interest expense:
Interest expense	84,289	60,452	244,685	122,980
Net income (loss):
Net income	2,355,102	1,134,990	3,729,267	4,970,109
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	65,965,819		65,965,819		64,042,079
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	65,965,819		65,965,819		64,042,079
Forged Rolled Rings and Related Components [Member]
Revenues:
Revenues	9,826,210	7,608,796	23,619,875	29,733,041
Depreciation:
Depreciation	1,261,991	879,966	3,694,696	2,986,138
Interest expense:
Interest expense	66,494	60,452	196,690	122,980
Net income (loss):
Net income	1,270,837	838,628	2,347,542	4,329,039
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	51,194,448		51,194,448		51,930,395
Dyeing and Finishing Equipment [Member]
Revenues:
Revenues	7,517,513	4,067,900	15,965,940	12,118,216
Depreciation:
Depreciation	365,267	267,443	1,025,073	665,030
Interest expense:
Interest expense	17,795		47,995
Net income (loss):
Net income	1,201,156	463,156	2,117,296	1,292,804
Identifiable long-lived tangible assets by segment:
Identifiable long-lived tangible assets	14,771,371		14,771,371		12,111,684
Other Segment [Member]
Net income (loss):
Net income	(116,891)	(166,794)	(735,571)	(651,734)
China [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets	65,965,819		65,965,819		64,042,079
United States [Member]
Identifiable long-lived tangible assets by geographical location:
Identifiable long-lived tangible assets