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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies

Schedule of estimated useful lives of property, plant, and equipment

Leasehold improvements		Shorter of estimated useful life or remaining lease term
Buildings and improvements		31.5 years
Equipment		7-10 years
Furniture and fixtures		3-7 years

Schedule of share-based compensation cost charged against income for stock compensation plans

	Year Ended December 31
	2012		2011		2010
Selling, general, and administrative expenses	$	860,405	$	1,088,672	$	963,710

Schedule of assumptions used to determine the intrinsic fair market value of the options, using the Black Scholes valuation model

	Year Ended December 31
	2012	2011	2010
Expected volatility	56.90%	54.8% to 73.3%	65.8% to 83.4%
Expected dividends	None	None	None
Risk-free interest rate	0.39%	0.9% to 2.9%	2.0% to 3.2%
Exercise price	Closing price on date of grant	Closing price on date of grant	Closing price on date of grant
Expected term	5 years	4.6 to 7.7 years (output in lattice-based model)	4.1 to 7.9 years (output in lattice-based model)

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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