Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Organization and Summary of Significant Accounting Policies [Abstract]

Shipping and handling costs associated with outbound freight

The table below presents shipping and handling costs associated with outbound freight, which we include in selling and administrative expenses (in thousands):

	2011		2010		2009
$	33,588	$	29,924	$	28,482

Advertising expense

The table below presents advertising expense for the past three years (in thousands):

	2011		2010		2009
$	5,484	$	5,534	$	4,990

Summary of changes in allowance for doubtful accounts

The following table summarizes the changes in our allowance for doubtful accounts for the past three years (in thousands):

		2011			2010			2009
Balance at beginning of year	$	7,102		$	11,426		$	13,688
Bad debt expense		2,958			779			4,643
Write-offs, net of recoveries		(4,160	)		(5,103	)		(6,405	)
Reclassified balance (1)		—			—			(500	)
Balance at end of year	$	5,900		$	7,102		$	11,426

(1)   In 2009, we reclassified a specific trade accounts receivable reserve balance to offset an outstanding customer note receivable balance that was recorded in other non-current assets on the Consolidated Balance Sheets.

Summary of changes in allowance for inventory obsolescence

The following table summarizes the changes in our allowance for inventory obsolescence for the past three years (in thousands):

		2011			2010			2009
Balance at beginning of year	$	7,084		$	7,805		$	8,448
Acquisition of businesses, net (1)		—			—			(619	)
Provision for inventory write-downs		3,590			875			1,967
Deduction for inventory write-offs		(3,601	)		(1,596	)		(1,991	)
Balance at end of year	$	7,073		$	7,084		$	7,805

(1)    Amount reflects activity for acquisitions made prior to current accounting provisions for business combinations, which we applied prospectively as discussed below under ‘Acquisitions’.

Estimated useful lives of property and equipment

We depreciate property and equipment on a straight-line basis over the following estimated useful lives:

Buildings	40 years
Leasehold improvements	1 - 10 years (1)
Autos and trucks	3 - 5 years
Machinery and equipment	3 - 10 years
Computer equipment	3 - 7 years
Furniture and fixtures	5 - 10 years

(1)    For substantial improvements made near the end of a lease term where we are reasonably certain the lease will be renewed, we amortize the leasehold improvement over the remaining life of the lease including the expected renewal period.

Depreciation expense

The table below presents depreciation expense for the past three years (in thousands):

	2011		2010		2009
$	9,746	$	8,980	$	9,091

Supplemental disclosures to Consolidated Statements of Cash Flows

The supplemental disclosures to the accompanying Consolidated Statements of Cash Flows are as follows (in thousands):

			Year Ended December 31,
			2011		2010		2009
Cash paid during the year for:
	Interest	$	7,104	$	7,690	$	10,968
	Income taxes, net of refunds (1)		39,771		25,965		60,234

  (1)   The 2009 payments included $30.0 million for third and fourth quarter 2008 estimated federal income taxes, which were deferred as allowed by Internal Revenue Service Notice 2008-200 issued following Hurricane Gustav.