Segment Information (Details) - USD ($)		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
Segment reporting information revenue [Abstract]
Revenues		$ 49,565,576	$ 75,958,676
Depreciation		8,128,805	8,469,771
Interest expense		235,366	238,226
Net income (loss)		(12,770,222)	4,266,417
Identifiable long-lived tangible assets by segment		51,753,964	70,051,137
Identifiable long-lived tangible assets by geographical location		51,753,964	70,051,137
Dyeing and Finishing Equipment [Member]
Segment reporting information revenue [Abstract]
Revenues		29,010,950	42,209,342
Depreciation		3,397,397	3,119,823
Interest expense		144,056	147,525
Net income (loss)		3,652,124	5,494,791
Identifiable long-lived tangible assets by segment		25,782,801	30,691,226
Forged Rolled Rings and Related Components [Member]
Segment reporting information revenue [Abstract]
Revenues		12,080,893	33,749,334
Depreciation		2,755,726	4,846,273
Interest expense		40,363	90,701
Net income (loss)		(6,136,431)	(482,221)
Identifiable long-lived tangible assets by segment	[1]	14,212,045	$ 38,937,371
Petroleum and Chemical Equipment [Member]
Segment reporting information revenue [Abstract]
Revenues		8,473,733
Depreciation		1,975,682
Interest expense		50,947
Net income (loss)		(9,638,721)
Identifiable long-lived tangible assets by segment	[1]	$ 11,759,118
Other [Member]
Segment reporting information revenue [Abstract]
Depreciation	[2]		$ 503,675
Net income (loss)	[3]	$ (647,194)	(746,153)
Equipment Held For Sale [Member]
Segment reporting information revenue [Abstract]
Identifiable long-lived tangible assets by segment			422,540
China [Member]
Segment reporting information revenue [Abstract]
Identifiable long-lived tangible assets by geographical location		$ 51,753,964	$ 70,051,137
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] Depreciation for equipment held for sale is not taken in 2015. The equipment was held for rental in 2014. The Company does not allocate the depreciation for equipment held for rental to any operating segment. Such depreciation is reflected as a reduction in rental income.

[3] 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.