Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

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):

2018		2017		2016
$	48,610	$	45,247	$	39,879

Advertising expense

We expense advertising costs when incurred. The table below presents advertising expense for the past three years (in thousands):

2018		2017		2016
$	7,390	$	7,477	$	7,011

Fair value measurements

	Fair Value at December 31,
	2018		2017
Level 2
Unrealized gains on interest rate swaps	$	2,378	$	1,585
Unrealized losses on interest rate swaps	—		703
Level 3
Contingent consideration liabilities	$	1,117	$	1,824

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):

	2018			2017			2016
Balance at beginning of year	$	3,897		$	4,050		$	4,205
Bad debt expense	4,164			916			1,199
Write-offs, net of recoveries	(1,879		)	(1,069		)	(1,354		)
Balance at end of year	$	6,182		$	3,897		$	4,050

Summary of changes in allowance for inventory obsolescence

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

	2018			2017			2016
Balance at beginning of year	$	6,264		$	6,531		$	6,979
Provision for inventory write-downs	3,998			2,660			2,036
Deduction for inventory write-offs	(2,536		)	(2,927		)	(2,484		)
Balance at end of year	$	7,726		$	6,264		$	6,531

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)	1 - 10 years
Autos and trucks	3 - 6 years
Machinery and equipment	3 - 15 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):

2018		2017		2016
$	26,122	$	24,157	$	20,338

Redeemable noncontrolling interest

The table below presents the changes in Redeemable noncontrolling interest (in thousands):

	2018		2017			2016
Redeemable noncontrolling interest, beginning of period	$	—	$	2,287		$	2,665
Redemption value adjustment of noncontrolling interest	—		360			—
Net loss attributable to noncontrolling interest	—		(294		)	(352		)
Other comprehensive income (loss) attributable to noncontrolling interest	—		220			(26		)
Less: purchase of redeemable noncontrolling interest	—		2,573			—
Redeemable noncontrolling interest, end of period	$	—	$	—		$	2,287

Accumulated other comprehensive loss

The table below presents the components of our Accumulated other comprehensive loss balance (in thousands):

	December 31,
	2018			2017
Foreign currency translation adjustments	$	(12,422	)	$	(7,478	)
Unrealized gains on interest rate swaps, net of tax (1)	1,425			150
Accumulated other comprehensive loss	$	(10,997	)	$	(7,328	)

Supplemental disclosures to Consolidated Statements of Cash Flows

The following table presents supplemental disclosures to the accompanying Consolidated Statements of Cash Flows (in thousands):

	Year Ended December 31,
	2018		2017		2016
Cash paid during the year for:
Interest	$	17,796	$	12,957	$	8,052
Income taxes, net of refunds	50,091		84,251		80,378

Schedule of recent accounting pronouncements pending adoption

The following table summarizes the remaining recent accounting pronouncements that we plan to adopt in future periods:

Standard	Description	Effective Date	Effect on Financial Statements and Other Significant Matters
ASU 2016-02, Leases (Topic 842)	Requires lessees to record most leases on their balance sheets but recognize expenses in a manner similar to current guidance. The guidance is required to be applied using a modified retrospective approach.	Annual periods beginning after December 15, 2018	The adoption of ASU 2016-02 will significantly increase assets and liabilities on our consolidated balance sheets. We are finalizing our testing of the information gathered to properly account for the new standard. Based on our current lease portfolio, assumptions related to borrowing rates, and conclusions related to renewal periods, we expect to record a right-of-use asset and corresponding liability for each of our existing operating leases of approximately $180.0 million. We do not expect a material impact on our results of operations and cash flows. Upon adoption, we expect to apply the package of practical expedients available within the new standard, which is intended to provide some relief to issuers. We will also have expanded disclosures upon adoption.
ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities	Eliminates the requirement to separately measure and report hedge ineffectiveness. For qualifying cash flow and net investment hedges, the change in the fair value of the hedging instrument will be recorded in Other Comprehensive Income (OCI), and amounts deferred in OCI will be reclassified to earnings in the same income statement line item that is used to present the earnings effect of the hedged item.	Annual periods beginning after December 15, 2018	We do not expect this accounting pronouncement will have a material impact on our financial position, results of operations and related disclosures.

Standard	Description	Effective Date	Effect on Financial Statements and Other Significant Matters
ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments	Changes the way companies evaluate credit losses for most financial assets and certain other instruments. For trade and other receivables, held-to-maturity debt securities, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model to evaluate impairment, potentially resulting in earlier recognition of allowances for losses. The new standard also requires enhanced disclosures, including the requirement to disclose the information used to track credit quality by year of origination for most financing receivables. The guidance must be applied using a cumulative-effect transition method.	Annual periods beginning after December 15, 2019	We are currently evaluating the effect this will have on our financial position, results of operations and related disclosures.
ASU 2017-04, Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment	Eliminates the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge (commonly referred to as Step 2 under the current guidance). Rather, the measurement of a goodwill impairment charge will be based on the excess of a reporting unit’s carrying value over its fair value (Step 1 under the current guidance). This guidance should be applied prospectively.	Annual and interim impairment tests performed in periods beginning after December 15, 2019	We are currently evaluating the effect this will have on our financial position, results of operations and related disclosures.