Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Property, plant and equipment, including those held under capital lease, are stated at cost. Depreciation is computed by use of the straight-line method over the estimated useful lives of the assets, or the lease term if shorter, as follows:


Building and improvements			3 - 20 years
Machinery and equipment			3 - 10 years
Furniture and fixtures			3 - 10 years

Basic and Dilutive Net Loss per Share Computations

The following are the basic and dilutive net loss per share computations for the last three fiscal years:


	2015			2014			2013
Net loss from continuing operations	$	(36,415,026	)	$	(32,260,663	)	$	(25,986,692	)
Net loss from discontinued operations		—			(480,611	)		(452,467	)

Net loss	$	(36,415,026	)	$	(32,741,274	)	$	(26,439,159	)


Weighted average shares outstanding used to compute basic and diluted net loss per share		95,807,377			61,612,957			43,422,001

Basic and diluted net loss per share from continuing operations	$	(0.38	)	$	(0.52	)	$	(0.60	)
Basic and diluted net loss per share from discontinued operations	$	—		$	(0.01	)	$	(0.01	)

Basic and diluted net loss per share	$	(0.38	)	$	(0.53	)	$	(0.61	)

Schedule of Anti-dilutive Securities

Outstanding options, warrants and restricted stock units were excluded from the computation of diluted net loss per share because the effect would have been anti-dilutive for all periods presented below:


	2015		2014		2013
Outstanding options		2,079,129		302,729		428,258
Restricted stock units		8,442,519		3,374,940		3,326,282
Outstanding warrants		44,277,849		23,478,181		16,267,659

Total		54,799,497		27,155,850		20,022,199

Summary of Components of Accumulated OCI

The components of our accumulated OCI, as of December 31 of each year shown, are as follows:


	2015		2014
Unrealized gain on foreign currency translation	$	47,359	$	65,390