Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Estimated Lives Used in Determining Depreciation and Amortization

The estimated lives used in determining depreciation and amortization are:

Buildings and improvements	12 – 40 years
Warehouse and office equipment	5 – 7 years
Automobiles	3 – 5 years

Summary of Fair Value Measurement of Financial Assets and Liabilities

The following tables summarize the fair value measurements (in thousands of dollars) of our financial assets and liabilities:

	At December 31, 2012
	Total		Quoted market prices in active markets (level 1)		Significant other observable Inputs (level 2)
Cash equivalents – Overnight Investments	$	1,283	$	—	$	1,283

	At December 31, 2011
	Total		Quoted market prices in active markets (level 1)		Significant other observable Inputs (level 2)
Cash equivalents – Overnight Investments	$	3,190	$	—	$	3,190