Intangible Assets (Detail) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	$ 28,902,686
Currency Translation Adjustment	(2,983,093)
Accumulated Amortization	(6,689,671)
Net Book Value	19,229,922	20,334,636
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	16,700,000
Currency Translation Adjustment	(1,785,407)
Accumulated Amortization	(3,217,884)
Net Book Value	11,696,709	12,370,042
Useful Life		15 years
Distributor relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	4,700,000
Currency Translation Adjustment	(502,480)
Accumulated Amortization	(2,758,442)
Net Book Value	1,439,078	1,733,453
Useful Life		5 years
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	1,000,000
Currency Translation Adjustment	(106,910)
Accumulated Amortization	(183,407)
Net Book Value	709,683	749,166
Useful Life		16 years
Elevess trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	1,000,000
Accumulated Amortization	(529,938)
Net Book Value	470,062	501,401
Useful Life		9 years
In-process research & development
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Value	5,502,686
Currency Translation Adjustment	(588,296)
Net Book Value	$ 4,914,390	$ 4,980,574