MWI Veterinary Supply (MWIV) 10-Q 6 May 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Mar. 31, 2014	Apr. 25, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
AmendmentFlag	'false	'
DocumentFiscalPeriodFocus	'Q2	'
Document Fiscal Year Focus	'2014	'
Current Fiscal Year End Date	'--09-30	'
EntityCentralIndexKey	'0001323974	'
Trading Symbol	'mwiv	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Registrant Name	'MWI Veterinary Supply, Inc.	'
Entity Voluntary Filers	'No	'
Entity Well Known Seasoned Issuer	'Yes	'
Entity Common Stock Shares Outstanding	'	12,860,355

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'	'	'
Product sales	$698,594	$541,205	$1,361,335	$1,090,692
Product sales to related party	16,787	16,799	37,487	35,805
Commissions	5,891	5,110	9,709	9,465
Total revenues	721,272	563,114	1,408,531	1,135,962
Cost of product sales	630,212	488,435	1,228,383	984,354
Gross profit	91,060	74,679	180,148	151,608
Selling, general and administrative expenses	60,723	47,928	116,796	95,388
Depreciation and amortization	2,906	2,513	5,715	4,905
Operating income	27,431	24,238	57,637	51,315
Other income (expense):	'	'	'	'
Interest expense	-356	-223	-595	-426
Earnings of equity method investees	82	85	186	178
Other	155	209	352	413
Total other income (expense), net	-119	71	-57	165
Income before taxes	27,312	24,309	57,580	51,480
Income tax expense	-10,536	-9,209	-22,365	-19,629
Net income	$16,776	$15,100	$35,215	$31,851
Earnings Per Share, Basic and Diluted [Abstract]	'	'	'	'
Basic	$1.32	$1.19	$2.77	$2.51
Diluted	$1.32	$1.19	$2.76	$2.51
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]	'	'	'	'
Weighted Average Number of Shares Outstanding, Basic	12,712	12,674	12,709	12,669
Weighted Average Number of Shares Outstanding, Diluted	12,748	12,709	12,745	12,702

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$16,776	$15,100	$35,215	$31,851
Other comprehensive income (loss)	'	'	'	'
Foreign currency translation	640	-3,498	2,026	-3,516
Total comprehensive income	$17,416	$11,602	$37,241	$28,335

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Sep. 30, 2013
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and cash equivalents	$2,362	$953
Receivables, net	387,034	307,445
Inventories	414,896	326,093
Prepaid expenses and other current assets	4,296	6,004
Deferred income taxes	3,461	2,327
Total current assets	812,049	642,822
Property and equipment, net	47,148	39,183
Goodwill	72,546	71,150
Intangibles, net	43,188	40,490
Other assets, net	9,943	8,910
Total assets	984,874	802,555
Current Liabilities:	'	'
Credit facilities	112,533	18,801
Accounts payable	373,889	324,057
Accrued expenses and other current liabilities	19,644	21,816
Current portion of capital lease obligations	48	103
Total current liabilities	506,114	364,777
Deferred income taxes	9,690	9,321
Long-term portion of capital lease obligations	3	16
Other long-term liabilities	2,069	2,122
Commitments and contingencies	'	'
Stockholders Equity	'	'
Common stock $0.01 par value, 40,000 authorized; 12,853 and 12,848 shares issued and outstanding, respectively	129	128
Additional paid in capital	151,897	148,459
Retained earnings	311,028	275,814
Accumulated other comprehensive income	3,944	1,918
Total stockholders’ equity	466,998	426,319
Total liabilities and stockholders’ equity	$984,874	$802,555

Statement_of_Financial_Positio

Statement of Financial Position (Parentheticals) (USD $)	Mar. 31, 2014	Sep. 30, 2013
Statement Of Financial Position [Abstract]	'	'
Common Stock Par Value	$0.01	$0.01
Common Stock shares authorized	40,000,000	40,000,000
Common Stock, Shares Issued	12,861,000	12,848,000
Common Stock Shares Outstanding	12,861,000	12,848,000

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash Flows From Operating Activities:	'	'
Net income	$35,215	$31,851
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	5,725	4,916
Amortization of debt issuance costs	19	19
Stock-based compensation	2,938	2,087
Deferred income taxes	-839	-83
Earnings of equity method investees	-186	-178
Proceeds from Equity Method Investment, Dividends or Distributions	337	'
Excess tax benefit of exercise of common stock options and restricted stock vesting	-170	-267
(Gain)/loss on disposal of property and equipment	-27	55
Other	-16	-167
Changes in operating assets and liabilities (net of effects of business acquisitions):	'	'
Receivables	-873	-14,196
Inventories	-22,819	-17,021
Prepaid expenses and other assets	1,863	3,159
Accounts payable	-25,123	-2,952
Accrued expenses	-3,896	-1,452
Net cash provided by operating activities	-7,852	5,771
Cash Flows From Investing Activities:	'	'
Business acquisitions, net of cash acquired in fiscal year 2014 of $1,387	-78,128	-17,006
Purchases of property and equipment	-7,097	-5,316
Proceeds from sales of property and equipment	123	72
Other	-55	-235
Net cash used in investing activities	-85,157	-22,485
Cash Flows From Financing Activities:	'	'
Borrowings on credit facilities	387,816	357,280
Payments on credit facilities	-294,135	-340,860
Proceeds from issuance of common stock	390	309
Proceeds from exercise of stock options	44	94
Excess tax benefit of exercise of common stock options and restricted stock vesting	170	267
Tax withholdings on net settlements of share-based awards	-84	'
Payment on long-term debt and capital lease obligations	-70	-187
Net cash (used in)/provided by financing activities	94,131	16,903
Effect of Exchange Rate on Cash and Cash Equivalents	287	-251
Net Increase (Decrease) in Cash and Cash Equivalents	1,409	-62
Cash and Cash Equivalents at Beginning of Period	953	514
Cash and Cash Equivalents at End of Period	$2,362	$452

General

General	6 Months Ended
	Mar. 31, 2014
Business Description and Basis of Presentation [Abstract]	'
General	'
	NOTE 1 — GENERAL
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements include the results of operations, financial position and cash flows of MWI Veterinary Supply, Inc. (“MWI” or the “Company”) and its wholly-owned subsidiaries (collectively referred to as “we,” “us,” and “our” throughout this Form 10-Q).  All intercompany balances have been eliminated.
	In the opinion of our management, the accompanying unaudited condensed consolidated financial statements include all adjustments necessary to present fairly, in all material respects, our results for the periods presented. These condensed consolidated financial statements have been prepared by us pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted pursuant to such rules and regulations.  These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in our 2013 Annual Report on Form 10-K filed with the SEC on November 27, 2013.  The results of operations for the three and six months ended March 31, 2014 are not necessarily indicative of results to be expected for the entire fiscal year.
	Our unaudited condensed consolidated balance sheet as of September 30, 2013 has been derived from the audited consolidated balance sheet as of that date.
	Use of Estimates
	The accompanying unaudited condensed consolidated financial statements have been prepared on the accrual basis of accounting using accounting principles generally accepted in the United States. In preparing financial information, we use certain estimates and assumptions that may affect the reported amounts and disclosures. Some of these estimates require difficult, subjective and complex judgments about matters that are inherently uncertain. As a result, actual results could differ materially from these estimates. Estimates are used when accounting for, among other items, allowance for doubtful accounts, customer incentives, vendor rebates, inventories, goodwill and intangible assets, income taxes, and contingencies. The estimates of fair value of assets and liabilities and the disclosure of contingent assets and liabilities as of the balance sheet date and reported amounts of revenue and expenses for the periods are based on assumptions that we believe to be reasonable.
	Revenue Recognition
	We sell products we source from vendors to our customers through either a “buy/sell” transaction or an agency relationship with our vendors. In a “buy/sell” transaction, we purchase or take inventory of products from the vendor. When a customer places an order with us, we pick, pack, ship and invoice the customer for the order. We recognize revenue from “buy/sell” transactions as product sales when the product is delivered to the customer. We accept product returns from our customers. We estimate returns based on historical experience and recognize these estimated returns as a reduction of product sales. Product returns have historically not been significant to our financial statements. We record revenues net of sales tax.  In an agency relationship, we generally do not purchase and take inventory of products from vendors. We receive an order from a customer, then transmit the order to the vendor, who picks, packs and ships the order to the customer. In some cases, the vendor invoices and collects payment from the customer, while in other cases we invoice and collect payment from the customer on behalf of the vendor. We receive a commission payment for soliciting the order from the customer and for providing other customer service activities. Commissions are recognized when the services upon which the commissions are based are complete. Gross billings from agency contracts were $94,050 and $93,649 for the three months ended March 31, 2014 and 2013, respectively, and generated commission revenue of $5,891 and $5,110, respectively. Gross billings from agency contracts were $161,564 and $161,311 for the six months ended March 31, 2014 and 2013, respectively, and generated commission revenue of $9,709 and $9,465, respectively.
	Customer incentives are accrued based on the terms of the contracts with each customer. These incentive programs provide that the customer receive an incentive based on their product purchases or attainment of performance goals. Incentives are estimated based on the specific terms in each agreement, historical experience and product growth rates.  Incentives are recognized as a reduction to product sales.
	Cost of Product Sales and Vendor Rebates
	Cost of product sales consist of our inventory product cost, including shipping and delivery costs to and from our distribution centers.  Vendor rebates are recorded based on the terms of the contracts or programs with each vendor.  Many of our vendors’ rebate programs are based on a calendar year.  We may receive quarterly, semi-annual or annual performance-based rebates from third-party vendors based upon attainment of certain sales and/or purchase goals. Sales rebates are classified in the accompanying condensed consolidated statements of income as a reduction to cost of product sales at the time the sales performance measures are achieved. Purchase rebates are measured against inventory purchases from the vendors and are classified as a reduction of inventory until the product is sold. When the inventory is sold and purchase measures are achieved, purchase rebates are recognized as a reduction to cost of product sales.
	Historically, actual results have not significantly deviated from those determined using the estimates described above. We expect that our estimates in the future will continue to be reasonable as our rebates are based on specific vendor program goals and are principally recorded upon achievement of sales or purchase performance measures. Vendors may change or eliminate rebate programs from year to year.
	Concentrations of Risk
	Our financial instruments that are exposed to concentrations of credit risk consist primarily of our receivables. Our customers are geographically dispersed throughout the United States and United Kingdom. In the United Kingdom, our business relies on a smaller number of relatively larger customers than does our business in the United States.  Our customers in the United Kingdom accounted for an aggregate of 11.7% and 14.5% of our consolidated accounts receivable balance as of March 31, 2014 and September 30, 2013, respectively, and one significant customer accounted for 1.7% and 2.6% of our consolidated accounts receivable balance as of March 31, 2014 and September 30, 2013, respectively. We routinely assess the financial strength of our customers and review their credit history before extending credit. In addition, we establish an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, historical trends and other information.

Effect_Of_Recently_Issued_Acco

Effect Of Recently Issued Accounting Standards	6 Months Ended
	Mar. 31, 2014
Effect Of Recently Issued Accounting Standards [Abstract]	'
Effect Of Recently Issued Accounting Standards	'
	NOTE 2 — EFFECT OF RECENTLY ISSUED ACCOUNTING STANDARDS
	In January 2013, the FASB issued Accounting Standards Update (“ASU”) No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities, which includes bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending arrangements that are either offset on the balance sheet or subject to an enforceable master netting arrangement or similar agreement.  This guidance is effective for our fiscal year beginning October 1, 2013.  The adoption of this guidance did not have a material impact on our consolidated financial statements.
	In February 2013, the FASB issued ASU No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which provides additional disclosure requirements for items reclassified out of accumulated other comprehensive income.  This guidance is effective for our fiscal year beginning October 1, 2013.  The adoption of this guidance did not have a material impact on our consolidated financial statements.

Business_Acquisition

Business Acquisition	6 Months Ended
	Mar. 31, 2014
Business Acquisitions [Abstract]	'
Business Acquisitions	'
	NOTE 3 — BUSINESS ACQUISITIONS
	On December 31, 2012, MWI Veterinary Supply Co. (“MWI Co.”) purchased substantially all of the assets of Prescription Containers Inc. (“PCI Animal Health”) for $17,107, after giving effect to post-closing adjustments.  PCI Animal Health was a distributor of companion animal health products to veterinary practices, primarily in the Northeastern United States.  The intangible asset acquired in the acquisition is for customer relationships and has an estimated useful life of 10 years.  The amount recorded in goodwill is expected to be deductible for tax purposes over 15 years. The fair values assigned to the tangible and intangible assets acquired and liabilities assumed are based on management's estimates and assumptions, as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques.
	On November 1, 2013, MWI Co. purchased substantially all of the assets of IVESCO Holdings, LLC (“IVESCO”) for a net purchase price of $79,515, after giving effect to post-closing adjustments.  The cash purchase price was funded with borrowings by the Company under its existing Credit Agreement (as defined herein). IVESCO engaged in the distribution and sale of animal health and related products and services, logistics and technical support relating to such distribution and sale of animal health and related products. The intangible assets acquired in the acquisition include trade name and customer relationships.  The intangible asset representing customer relationships acquired in the acquisition has an estimated useful life of 9 years.  The amount recorded in goodwill is expected to be deductible for tax purposes over 15 years. The fair values assigned to the tangible and intangible assets acquired and liabilities assumed are based on management’s estimates and assumptions as well as other information compiled by management, including valuations that utilize customary valuation procedures and techniques.
	The following table summarizes the fair values of the assets acquired and liabilities assumed at the date of acquisition, which may be adjusted during the allocation period as defined in Accounting Standards Codification (“ASC”) 805.  These purchase price allocations are based on a combination of valuations and analyses.
			IVESCO			PCI Animal Health
	Cash		$	1,387		$	-
	Receivables			77,255			3,585
	Inventories			65,033			1,928
	Other current assets			335			-
	Property and equipment			4,931			-
	Other assets			1,086			-
	Goodwill			1,092			9,327
	Intangibles			3,850			4,780
	Total assets acquired			154,969			19,620
	Accounts payable			73,875			2,513
	Accrued expenses			1,579			-
	Total liabilities assumed			75,454			2,513
	Net assets acquired		$	79,515		$	17,107
	The following table presents information for IVESCO that is included in our consolidated statements of income from the acquisition date of November 1, 2013 through the end of the quarter ended March 31, 2014. Subsequent to March 31, 2014, determination of such information will be impracticable due to the integration of the acquired operations.  This information for PCI Animal Health is not presented as it is impracticable due to the integration of the acquired operations.
			IVESCO’s operations included in MWI’s results
			Three months ended March 31, 2014			Six months ended March 31, 2014
	Revenues	$	120,233		$	195,334
	Net Income	$	427		$	858
	The following table presents supplemental pro forma information as if the acquisition of substantially all of the assets of IVESCO had occurred on October 1, 2012 for the six months ended March 31, 2014 and 2013 (pro forma information is not presented for PCI Animal Health as it is not material):
			Unaudited Pro Forma Consolidated Results
			Six Months Ended March 31,
			2014			2013
	Revenues		$	1,458,523		$	1,385,848
	Net Income		$	35,216		$	34,369
	Earnings per common share - diluted		$	2.76		$	2.71
	Results for the six months ended March 31, 2014 include approximately $1,557 of integration and acquisition related expenses incurred in connection with the acquisition of substantially all of the assets of IVESCO on November 1, 2013. The unaudited pro forma consolidated results are not necessarily indicative of what our consolidated results of operations would have been had we completed the acquisition on October 1, 2012.  Additionally, the unaudited pro forma consolidated results do not purport to project the future results of operations of the combined company.

Receivables

Receivables	6 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Receivables	'
	NOTE 4 — RECEIVABLES
		March 31,		September 30,
		2014		2013
	Trade	$	344,248	$	282,923
	Vendor rebates and programs		46,641		26,983
			390,889		309,906
	Allowance for doubtful accounts		-3,855		-2,461
		$	387,034	$	307,445

Property_and_Equipment

Property and Equipment	6 Months Ended
	Mar. 31, 2014
Property And Equipment [Abstract]	'
Property And Equipment	'
	NOTE 5 — PROPERTY AND EQUIPMENT
		March 31,		September 30,
		2014		2013
	Land	$	2,509	$	1,932
	Building and leasehold improvements		19,456		14,914
	Machinery, furniture and equipment		42,023		38,032
	Computer equipment		12,805		9,868
	Construction in progress		3,830		4,328
			80,623		69,074
	Accumulated depreciation		-33,475		-29,891
		$	47,148	$	39,183
	Depreciation expense was $2,080 and $1,732 for the three months ended March 31, 2014 and 2013, respectively. Depreciation expense was $4,054 and $3,449 for the six months ended March 31, 2014 and 2013, respectively.

Goodwill_and_Intangibles

Goodwill and Intangibles	6 Months Ended
	Mar. 31, 2014
Goodwill and Intangibles [Abstract]	'
Goodwill and Intangibles	'
	NOTE 6 — GOODWILL AND INTANGIBLES
	The changes in the carrying value of goodwill are as follows:
	Goodwill as of September 30, 2013	$	71,150
	Acquisition activity		1,092
	Foreign currency translation		304
	Goodwill as of March 31, 2014	$	72,546
	Balances of intangibles are as follows:
		Estimated
		Useful Lives		31-Mar-14
	Amortizing:			Cost		Accumulated Amortization		Net
	Customer relationships	9 - 20 years		$	37,752	$	-9,714	$	28,038
	Covenants not to compete	1 - 5 years			373		-136		237
	Technology	11 years			5,830		-1,281		4,549
	Other	2 - 7 years			1,197		-953		244
					45,152		-12,084		33,068
	Non-Amortizing:
	Trade names and patents				10,120		-		10,120
				$	55,272	$	-12,084	$	43,188
		Estimated
		Useful Lives		30-Sep-13
	Amortizing:			Cost		Accumulated Amortization		Net
	Customer relationships	9 - 20 years		$	35,797	$	-8,393	$	27,404
	Covenants not to compete	1 - 5 years			450		-185		265
	Technology	11 years			5,830		-1,016		4,814
	Other	2 - 7 years			1,126		-794		332
					43,203		-10,388		32,815
	Non-Amortizing:
	Trade names and patents				7,675		-		7,675
				$	50,878	$	-10,388	$	40,490
	Amortization expense was $831 and $786 for the three months ended March 31, 2014 and 2013, respectively.  Amortization expense was $1,671 and $1,467 for the six months ended March 31, 2014 and 2013, respectively.
	Estimated future annual amortization expense related to intangible assets as of March 31, 2014 is as follows:
		Amount
	Remainder of 2014	$	1,654
	2015		2,989
	2016		2,862
	2017		2,782
	2018		2,765
	Thereafter		20,016
		$	33,068
	The above projection of amortization expense is based upon preliminary estimates of intangible assets and lives associated with the acquisition of substantially all of the assets of IVESCO.  These amounts may be adjusted during the allocation period as defined in ASC 805.

Debt

Debt	6 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Debt	'
	NOTE 7 — DEBT
	The following table presents the outstanding debt and capital lease obligations as of March 31, 2014 and September 30, 2013:
		March 31,		September 30,
		2014		2013
	Revolving credit facility, 1.04% interest as of March 31, 2014	$	112,200	$	16,300
	Sterling revolving credit facility, 1.41% interest as of March 31, 2014		333		2,501
	Capital lease obligations (1)		51		119
	Total debt and capital lease obligations		112,584		18,920
	Less: Long-term capital lease obligations		-3		-16
	Total debt and capital lease obligations included in current liabilities	$	112,581	$	18,904
	(1) The capital lease obligations have varying maturity dates.
	Revolving Credit Facility — On February 3, 2014, MWI Co. as borrower, entered into a Fifth Amendment to Credit Agreement (the “Fifth Amendment”), amending the Credit Agreement dated December 13, 2006, as amended (the “Credit Agreement”), by and among MWI Co., MWI, and Memorial Pet Care, Inc. (“Memorial”) and Bank of America, N.A. and Wells Fargo Bank, N.A. as lenders (collectively, the “Lenders”).  As amended by the Fifth Amendment, the Credit Agreement allows for an aggregate revolving commitment of the Lenders of $200,000 and a maturity date of November 1, 2016.  Under the Credit Agreement, the margin on variable interest rate borrowings ranges from 0.95% to 1.50%.  The commitment fee under the Credit Agreement ranges from 0.15% to 0.25% depending on the funded debt to EBITDA ratio.  The variable interest rate is equal to the Daily LIBOR Floating Rate or the LIBOR 1-month, 2-month, 3-month or 6-month fixed rate (at MWI Co.’s option) plus the margin.  The Credit Agreement contains financial covenants, including a fixed charge ratio and a funded debt to EBITDA ratio.  We were in compliance with all of the financial covenants as of March 31, 2014 and September 30, 2013.
	Sterling Revolving Credit Facility— On March 15, 2013, Centaur Services Limited (“Centaur”) entered into a First Amendment (the “Amendment”) to the unsecured revolving line of credit facility (the “Sterling Revolving Credit Facility”) dated November 5, 2010 with Wells Fargo Bank, N.A. London Branch.  The Amendment increases the maximum loan amount of the Sterling Revolving Credit Facility to £20,000, an increase of £7,500, and extends the term of the facility to November 1, 2016. Interest is based on LIBOR for the applicable interest period plus an applicable margin of 0.95% to 1.50%, and the commitment fee ranges from 0.15% to 0.25%, depending on our funded debt to EBITDA ratio.  The facility contains a financial covenant requiring Centaur to maintain a minimum tangible net worth of £5,000.  As of March 31, 2014 and September 30, 2013, Centaur was in compliance with the covenant.
	Also on March 15, 2013, Centaur entered into an uncommitted overdraft facility (the “Overdraft Facility”) with Wells Fargo. The Overdraft Facility allows Centaur to borrow an additional £10,000 to fund short term normal trading cycle fluctuations. The Overdraft Facility will expire on November 1, 2016.  Interest on the borrowing under the Overdraft Facility is the same as the terms under the Amendment.
	MWI Co. guarantees the obligations of Centaur under the Sterling Revolving Credit Facility and the Overdraft Facility.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	6 Months Ended
	Mar. 31, 2014
Fair Value of Financial Instruments [Abstract]	'
Fair Value of Financial Instruments	'
	NOTE 8 — FAIR VALUE OF FINANCIAL INSTRUMENTS
	Current fair value accounting guidance includes a hierarchy that is intended to increase consistency and comparability in fair value measurements and disclosures.  This hierarchy prioritizes inputs to valuation techniques based on observable and unobservable data.  The guidance categorizes these inputs used in measuring fair value into three levels which include the following:
		·	Level 1 – observable inputs such as quoted prices in active markets;
		·	Level 2 – inputs, other than quoted prices, that are observable for the asset or liability, either directly or indirectly.  These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active; and
		·	Level 3 – unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	As of March 31, 2014 and September 30, 2013, financial instruments include cash and cash equivalents, receivables and accounts payable, and the fair values approximate book values due to their short maturities.
	Our revolving credit facilities in the United States and in the United Kingdom were amended in the recent past and are based on market conditions such as LIBOR.  Because these credit facilities include interest rates based on current market conditions (Level 1 inputs), we believe that the estimated fair value of our debt approximated carrying value.

Common_Stock_and_StockBased_Aw

Common Stock and Stock-Based Awards	6 Months Ended
	Mar. 31, 2014
Common Stock and Stock-Based Awards [Abstract]	'
Common Stock and Stock-Based Awards	'
	NOTE 9 — COMMON STOCK AND STOCK-BASED AWARDS
	We have a 2005 Stock-Based Award and Incentive Compensation Plan (the “2005 Plan”), under which we may offer shares of our common stock and grant options to purchase shares of our common stock to selected employees and non-employee directors. The purpose of the 2005 Plan is to promote our long-term financial success by attracting, retaining and rewarding eligible participants. As of March 31, 2014 and September 30, 2013, we had 805,463 and 815,260 shares, respectively, of our common stock available for issuance under the 2005 Plan. As of March 31, 2014,  13,583 options to purchase common stock were outstanding with a weighted average exercise price of $17.43 per share and expiring through September 2015.
	The 2005 Plan permits us to grant stock options (both incentive stock options and non‑qualified stock options), restricted and unrestricted stock and deferred stock. The compensation committee will determine the number and type of stock-based awards to each participant, the exercise price of each award, the duration of the award (not to exceed ten years), vesting provisions and all other terms and conditions of such award in individual award agreements. The 2005 Plan provides for the cancellation of all unvested awards upon termination of employment with us, unless determined otherwise by the compensation committee at the time awards are granted.
	We did not grant common stock options during each of the six months ended March 31, 2014 and 2013.  During the six months ended March 31, 2014 and 2013, we issued 5,300 and 3,100 shares, respectively, of restricted stock under the 2005 Plan. We also granted 4,505 and 6,000 shares of unrestricted stock to non-employee directors during the six months ended March 31, 2014 and 2013, respectively. During the three months ended March 31, 2014 and 2013, we recognized $1,833 and $1,465 of compensation expense related to stock grants, respectively. During the six months ended March 31, 2014 and 2013, we recognized $2,938 and $2,192 of compensation expense related to stock grants, respectively.
	We also have an employee stock purchase plan (“ESPP”) that allows substantially all employees to purchase shares of our common stock at 95% of the fair market value on the date of purchase.  The purchase date is the last trading date of the purchase periods, which begin in March, June, September and December.  Employees accumulate amounts through payroll deductions during the purchase period of between 1% and 10% but no more than $20 annually.  An employee is allowed to purchase a maximum of 200 shares per purchase period.  During the six months ended March 31, 2014 and 2013, we issued 2,388 and 2,750 shares, respectively, of our common stock under the ESPP.

Income_Taxes

Income Taxes	6 Months Ended
	Mar. 31, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	NOTE 10 — INCOME TAXES
	Our effective tax rate for the three months ended March 31, 2014 and 2013 was 38.6% and 37.9%, respectively. Our effective tax rate for the six months ended March 31, 2014 and 2013 was 38.8 % and 38.1%, respectively.  The increase was primarily due to higher estimated state income taxes.
	With few exceptions, we are no longer subject to income tax examination for years before 2009 in the U.S. and 2008 in significant state and local jurisdictions.  We are no longer subject to income tax examination for years before 2011 in significant foreign jurisdictions.

Computation_of_Earnings_per_Sh

Computation of Earnings per Share	6 Months Ended
	Mar. 31, 2014
Computation Of Earnings Per Share [Abstract]	'
Computation Of Earnings Per Share	'
	NOTE 11 — COMPUTATION OF EARNINGS PER SHARE (In thousands, except per share data)
		Three Months Ended March 31,
		2014				2013
		Basic		Diluted		Basic		Diluted
	Net income	$	16,776	$	16,776	$	15,100	$	15,100
	Weighted average common shares outstanding		12,712		12,712		12,674		12,674
	Effect of dilutive securities
	Stock options and restricted stock				36				35
	Weighted average diluted shares outstanding				12,748				12,709
	Earnings per share	$	1.32	$	1.32	$	1.19	$	1.19
	Anti-dilutive shares excluded from calculation				-				-
		Six Months Ended March 31,
		2014				2013
		Basic		Diluted		Basic		Diluted
	Net income	$	35,215	$	35,215	$	31,851	$	31,851
	Weighted average common shares outstanding		12,709		12,709		12,669		12,669
	Effect of diluted securities
	Stock options and restricted stock				36				33
	Weighted average diluted shares outstanding				12,745				12,702
	Earnings per share	$	2.77	$	2.76	$	2.51	$	2.51
	Anti-dilutive shares excluded from calculation				-				-

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	6 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Comprehensive Income (Loss) Note [Text Block]	'
	NOTE 12 — ACCUMULATED OTHER COMPREHENSIVE INCOME
	Changes in accumulated other comprehensive income, comprised entirely of foreign currency translation adjustments, consisted of the following:
		Three Months Ended March 31,				Six Months Ended March 31,
		2014		2013		2014		2013
	Balance, beginning of period	$	3,304	$	1,524	$	1,918	$	1,542
	Foreign currency translation gain (loss) in
	other comprehensive income		640		-3,498		2,026		-3,516
	Balance, end of period	$	3,944	$	-1,974	$	3,944	$	-1,974

Related_Parties

Related Parties	6 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	NOTE 13 — RELATED PARTIES
	MWI Co. holds a 50.0% membership interest in Feeders’ Advantage LLC (“Feeders’ Advantage”).  MWI Co. charged Feeders’ Advantage for certain operating and administrative services in the amounts of $265 and $260 for the three months ended March 31, 2014 and 2013, respectively, and $591 and $557 for the six months ended March 31, 2014 and 2013, respectively. Sales of products to Feeders’ Advantage were $16,787 and $16,799, for each of the three months ended March 31, 2014 and 2013, respectively, which represented 2% and 3% of total product sales for each of the three-month periods ended March 31, 2014 and 2013. Sales of products to Feeders’ Advantage were $37,487 and $35,805 for the six months ended March 31, 2014 and 2013, respectively, which represented 3% of total product sales for each of the six-month periods.
	MWI Co. allows Feeders’ Advantage to use its cash management system to finance its day-to-day operations. At any given time, the outstanding position used in the cash management system may be a receivable or payable depending on the cash activity.  A receivable balance bears interest at the prime rate. The interest due on the outstanding receivable is calculated and charged to Feeders’ Advantage on the last day of each month. Conversely, to the extent MWI Co. has a payable balance due to Feeders’ Advantage, the payable balance accrues interest in favor of Feeders’ Advantage at the average federal funds rates in effect for that month.  MWI Co. had a payable balance to Feeders’ Advantage of $2,392 and $777 as of March 31, 2014 and September 30, 2013, respectively.

Statements_of_Cash_flows_Suppl

Statements of Cash flows - Supplemental and Non-Cash Disclosures	6 Months Ended
	Mar. 31, 2014
Statements of Cash Flows — Supplemental and Noncash Disclosures [Abstract]	'
Statements of Cash Flows — Supplemental and Noncash Disclosures	'
	NOTE 14 — STATEMENTS OF CASH FLOWS – SUPPLEMENTAL AND NON-CASH DISCLOSURES
		Six Months Ended March 31,
		2014		2013
	Supplemental Disclosures
	Cash paid for interest	$	554	$	382
	Cash paid for income taxes		21,728		16,829
	Non-cash Activities
	Property and equipment acquisitions financed with accounts payable		164		391

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Mar. 31, 2014
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	NOTE 15 — COMMITMENTS AND CONTINGENCIES
	From time to time, in the normal course of business, we may become a party to legal proceedings that may have an adverse effect on our financial position, results of operations and cash flows. At March 31, 2014, we were not a party to any material pending legal proceedings and were not aware of any claims that individually or in the aggregate could have a material adverse effect on our financial position, results of operations or cash flows.

General_Policies

General (Policies)	6 Months Ended
	Mar. 31, 2014
Summary of Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements include the results of operations, financial position and cash flows of MWI Veterinary Supply, Inc. (“MWI” or the “Company”) and its wholly-owned subsidiaries (collectively referred to as “we,” “us,” and “our” throughout this Form 10-Q).  All intercompany balances have been eliminated.
	In the opinion of our management, the accompanying unaudited condensed consolidated financial statements include all adjustments necessary to present fairly, in all material respects, our results for the periods presented. These condensed consolidated financial statements have been prepared by us pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States have been condensed or omitted pursuant to such rules and regulations.  These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in our 2013 Annual Report on Form 10-K filed with the SEC on November 27, 2013.  The results of operations for the three and six months ended March 31, 2014 are not necessarily indicative of results to be expected for the entire fiscal year.
	Our unaudited condensed consolidated balance sheet as of September 30, 2013 has been derived from the audited consolidated balance sheet as of that date.
Use of Estimates	'
	Use of Estimates
	The accompanying unaudited condensed consolidated financial statements have been prepared on the accrual basis of accounting using accounting principles generally accepted in the United States. In preparing financial information, we use certain estimates and assumptions that may affect the reported amounts and disclosures. Some of these estimates require difficult, subjective and complex judgments about matters that are inherently uncertain. As a result, actual results could differ materially from these estimates. Estimates are used when accounting for, among other items, allowance for doubtful accounts, customer incentives, vendor rebates, inventories, goodwill and intangible assets, income taxes, and contingencies. The estimates of fair value of assets and liabilities and the disclosure of contingent assets and liabilities as of the balance sheet date and reported amounts of revenue and expenses for the periods are based on assumptions that we believe to be reasonable.
Revenue Recognition	'
	Revenue Recognition
	We sell products we source from vendors to our customers through either a “buy/sell” transaction or an agency relationship with our vendors. In a “buy/sell” transaction, we purchase or take inventory of products from the vendor. When a customer places an order with us, we pick, pack, ship and invoice the customer for the order. We recognize revenue from “buy/sell” transactions as product sales when the product is delivered to the customer. We accept product returns from our customers. We estimate returns based on historical experience and recognize these estimated returns as a reduction of product sales. Product returns have historically not been significant to our financial statements. We record revenues net of sales tax.  In an agency relationship, we generally do not purchase and take inventory of products from vendors. We receive an order from a customer, then transmit the order to the vendor, who picks, packs and ships the order to the customer. In some cases, the vendor invoices and collects payment from the customer, while in other cases we invoice and collect payment from the customer on behalf of the vendor. We receive a commission payment for soliciting the order from the customer and for providing other customer service activities. Commissions are recognized when the services upon which the commissions are based are complete. Gross billings from agency contracts were $94,050 and $93,649 for the three months ended March 31, 2014 and 2013, respectively, and generated commission revenue of $5,891 and $5,110, respectively. Gross billings from agency contracts were $161,564 and $161,311 for the six months ended March 31, 2014 and 2013, respectively, and generated commission revenue of $9,709 and $9,465, respectively.
	Customer incentives are accrued based on the terms of the contracts with each customer. These incentive programs provide that the customer receive an incentive based on their product purchases or attainment of performance goals. Incentives are estimated based on the specific terms in each agreement, historical experience and product growth rates.  Incentives are recognized as a reduction to product sales.
Cost of Product Sales and Vendor Rebates	'
	Cost of Product Sales and Vendor Rebates
	Cost of product sales consist of our inventory product cost, including shipping and delivery costs to and from our distribution centers.  Vendor rebates are recorded based on the terms of the contracts or programs with each vendor.  Many of our vendors’ rebate programs are based on a calendar year.  We may receive quarterly, semi-annual or annual performance-based rebates from third-party vendors based upon attainment of certain sales and/or purchase goals. Sales rebates are classified in the accompanying condensed consolidated statements of income as a reduction to cost of product sales at the time the sales performance measures are achieved. Purchase rebates are measured against inventory purchases from the vendors and are classified as a reduction of inventory until the product is sold. When the inventory is sold and purchase measures are achieved, purchase rebates are recognized as a reduction to cost of product sales.
	Historically, actual results have not significantly deviated from those determined using the estimates described above. We expect that our estimates in the future will continue to be reasonable as our rebates are based on specific vendor program goals and are principally recorded upon achievement of sales or purchase performance measures. Vendors may change or eliminate rebate programs from year to year.
Concentrations of Risk	'
	Concentrations of Risk
	Our financial instruments that are exposed to concentrations of credit risk consist primarily of our receivables. Our customers are geographically dispersed throughout the United States and United Kingdom. In the United Kingdom, our business relies on a smaller number of relatively larger customers than does our business in the United States.  Our customers in the United Kingdom accounted for an aggregate of 11.7% and 14.5% of our consolidated accounts receivable balance as of March 31, 2014 and September 30, 2013, respectively, and one significant customer accounted for 1.7% and 2.6% of our consolidated accounts receivable balance as of March 31, 2014 and September 30, 2013, respectively. We routinely assess the financial strength of our customers and review their credit history before extending credit. In addition, we establish an allowance for doubtful accounts based upon factors surrounding the credit risk of specific customers, historical trends and other information.

Business_Acquisitions_Tables

Business Acquisitions (Tables)	6 Months Ended
	Mar. 31, 2014
Business Acquisitions [Abstract]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
			IVESCO			PCI Animal Health
	Cash		$	1,387		$	-
	Receivables			77,255			3,585
	Inventories			65,033			1,928
	Other current assets			335			-
	Property and equipment			4,931			-
	Other assets			1,086			-
	Goodwill			1,092			9,327
	Intangibles			3,850			4,780
	Total assets acquired			154,969			19,620
	Accounts payable			73,875			2,513
	Accrued expenses			1,579			-
	Total liabilities assumed			75,454			2,513
	Net assets acquired		$	79,515		$	17,107
Information Included in Statements of Income	'
			IVESCO’s operations included in MWI’s results
			Three months ended March 31, 2014			Six months ended March 31, 2014
	Revenues	$	120,233		$	195,334
	Net Income	$	427		$	858
Business Acquisition Pro Forma Information	'
			Unaudited Pro Forma Consolidated Results
			Six Months Ended March 31,
			2014			2013
	Revenues		$	1,458,523		$	1,385,848
	Net Income		$	35,216		$	34,369
	Earnings per common share - diluted		$	2.76		$	2.71

Receivables_Table

Receivables (Table)	6 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Schedule Of Accounts Receivable	'
		March 31,		September 30,
		2014		2013
	Trade	$	344,248	$	282,923
	Vendor rebates and programs		46,641		26,983
			390,889		309,906
	Allowance for doubtful accounts		-3,855		-2,461
		$	387,034	$	307,445

Property_and_Equipment_Table

Property and Equipment (Table)	6 Months Ended
	Mar. 31, 2014
Property And Equipment [Abstract]	'
Property And Equipment	'
		March 31,		September 30,
		2014		2013
	Land	$	2,509	$	1,932
	Building and leasehold improvements		19,456		14,914
	Machinery, furniture and equipment		42,023		38,032
	Computer equipment		12,805		9,868
	Construction in progress		3,830		4,328
			80,623		69,074
	Accumulated depreciation		-33,475		-29,891
		$	47,148	$	39,183

Goodwill_and_Intangibles_Table

Goodwill and Intangibles (Tables)	6 Months Ended
	Mar. 31, 2014
Goodwill and Intangibles [Abstract]	'
Changes in the Carrying Value of Goodwill	'
	Goodwill as of September 30, 2013	$	71,150
	Acquisition activity		1,092
	Foreign currency translation		304
	Goodwill as of March 31, 2014	$	72,546
Schedule of Intangible Assets	'
		Estimated
		Useful Lives		31-Mar-14
	Amortizing:			Cost		Accumulated Amortization		Net
	Customer relationships	9 - 20 years		$	37,752	$	-9,714	$	28,038
	Covenants not to compete	1 - 5 years			373		-136		237
	Technology	11 years			5,830		-1,281		4,549
	Other	2 - 7 years			1,197		-953		244
					45,152		-12,084		33,068
	Non-Amortizing:
	Trade names and patents				10,120		-		10,120
				$	55,272	$	-12,084	$	43,188
		Estimated
		Useful Lives		30-Sep-13
	Amortizing:			Cost		Accumulated Amortization		Net
	Customer relationships	9 - 20 years		$	35,797	$	-8,393	$	27,404
	Covenants not to compete	1 - 5 years			450		-185		265
	Technology	11 years			5,830		-1,016		4,814
	Other	2 - 7 years			1,126		-794		332
					43,203		-10,388		32,815
	Non-Amortizing:
	Trade names and patents				7,675		-		7,675
				$	50,878	$	-10,388	$	40,490
Schedule of Expected Amortization Expense	'
		Amount
	Remainder of 2014	$	1,654
	2015		2,989
	2016		2,862
	2017		2,782
	2018		2,765
	Thereafter		20,016
		$	33,068

Debt_Table

Debt (Table)	6 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Schedule of Debt	'
		March 31,		September 30,
		2014		2013
	Revolving credit facility, 1.04% interest as of March 31, 2014	$	112,200	$	16,300
	Sterling revolving credit facility, 1.41% interest as of March 31, 2014		333		2,501
	Capital lease obligations (1)		51		119
	Total debt and capital lease obligations		112,584		18,920
	Less: Long-term capital lease obligations		-3		-16
	Total debt and capital lease obligations included in current liabilities	$	112,581	$	18,904
	(1) The capital lease obligations have varying maturity dates.

Recovered_Sheet1

Computation Of Earnings Per Share (Table)	6 Months Ended
	Mar. 31, 2014
Computation Of Earnings Per Share [Abstract]	'
Computation Of Earnings Per Common Share	'
		Three Months Ended March 31,
		2014				2013
		Basic		Diluted		Basic		Diluted
	Net income	$	16,776	$	16,776	$	15,100	$	15,100
	Weighted average common shares outstanding		12,712		12,712		12,674		12,674
	Effect of dilutive securities
	Stock options and restricted stock				36				35
	Weighted average diluted shares outstanding				12,748				12,709
	Earnings per share	$	1.32	$	1.32	$	1.19	$	1.19
	Anti-dilutive shares excluded from calculation				-				-
		Six Months Ended March 31,
		2014				2013
		Basic		Diluted		Basic		Diluted
	Net income	$	35,215	$	35,215	$	31,851	$	31,851
	Weighted average common shares outstanding		12,709		12,709		12,669		12,669
	Effect of diluted securities
	Stock options and restricted stock				36				33
	Weighted average diluted shares outstanding				12,745				12,702
	Earnings per share	$	2.77	$	2.76	$	2.51	$	2.51
	Anti-dilutive shares excluded from calculation				-				-

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Table)	6 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
		Three Months Ended March 31,				Six Months Ended March 31,
		2014		2013		2014		2013
	Balance, beginning of period	$	3,304	$	1,524	$	1,918	$	1,542
	Foreign currency translation gain (loss) in
	other comprehensive income		640		-3,498		2,026		-3,516
	Balance, end of period	$	3,944	$	-1,974	$	3,944	$	-1,974

Recovered_Sheet2

Statements of Cash Flows - Supplemental and Noncash Disclosures (Table)	6 Months Ended
	Mar. 31, 2014
Statements of Cash Flows — Supplemental and Noncash Disclosures [Abstract]	'
Schedule Of Supplemental and Noncash Disclosures	'
		Six Months Ended March 31,
		2014		2013
	Supplemental Disclosures
	Cash paid for interest	$	554	$	382
	Cash paid for income taxes		21,728		16,829
	Non-cash Activities
	Property and equipment acquisitions financed with accounts payable		164		391

General_Revenue_Recognition_De

General (Revenue Recognition) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Summary of Significant Accounting Policies [Abstract]	'	'	'	'
Gross Billings From Agency Contracts	$94,050	$93,649	$161,564	$161,311
Commission Revenue	$5,891	$5,110	$9,709	$9,465

General_Concentrations_of_Risk

General (Concentrations of Risk) (Details) (Accounts Receivable [Member])	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Sep. 30, 2013
Geographic Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Customer Concentration Risk	11.70%	14.50%
Customer Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Customer Concentration Risk	1.70%	2.60%

Acquisitions_Narrative_Details

Acquisitions (Narrative) (Details) (USD $)	6 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013	Dec. 31, 2013	Mar. 31, 2014
	Prescription Containers, Inc. [Member]	Prescription Containers, Inc. [Member]	IVESCO Holdings, L.L.C. [Member]	IVESCO Holdings, L.L.C. [Member]
Business Acquisition [Line Items]	'	'	'	'
Business Acquisition, Date of Acquisition Agreement	31-Dec-12	'	1-Nov-13	'
Business Acquisition, Cost of Acquired Entity, Purchase Price	'	$17,107	$79,515	'
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	'10 years	'	'	'9 years
Business Acquisition, Goodwill, Expected Tax Deductible, Period	'15 years	'	'	'15 years
Business Acquisition, Cost of Acquired Entity, Transaction Costs	'	'	'	$1,557

Acquisitions_Schedule_of_Recog

Acquisitions (Schedule of Recognized Identified Assets Acquired and Liabilities Assumed) (Details) (USD $)	Mar. 31, 2014	Sep. 30, 2013
In Thousands, unless otherwise specified
Business Acquisition [Line Items]	'	'
Goodwill	$72,546	$71,150
Prescription Containers, Inc. [Member]	'	'
Business Acquisition [Line Items]	'	'
Receivables	'	3,585
Inventories	'	1,928
Goodwill	'	9,327
Intangibles	'	4,780
Total assets acquired	'	19,620
Accounts payable	'	2,513
Total liabilities assumed	'	2,513
Net assets acquired	'	17,107
IVESCO Holdings, L.L.C. [Member]	'	'
Business Acquisition [Line Items]	'	'
Cash	1,387	'
Receivables	77,255	'
Inventories	65,033	'
Other current assets	335	'
Property and equipment	4,931	'
Investments	1,086	'
Goodwill	1,092	'
Intangibles	3,850	'
Total assets acquired	154,969	'
Accounts payable	73,875	'
Accrued expenses	1,579	'
Total liabilities assumed	75,454	'
Net assets acquired	$79,515	'

Acquisitions_Information_Inclu

Acquisitions (Information Included in Statements of Income) (Details) (USD $)	3 Months Ended	5 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014
Business Acquisitions [Abstract]	'	'
Business Acquisition, Revenue	$120,233	$195,334
Business Acquisition, Net Income (Loss)	$427	$858

Acquisitions_Business_Acquisit

Acquisitions (Business Acquisition Pro Forma Information) (Details) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Business Acquisitions [Abstract]	'	'
Business Acquisition, Pro Forma Revenue	$1,458,523	$1,385,848
Business Acquisition, Pro Forma Net Income (Loss)	$35,216	$34,369
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$2.76	$2.71

Receivables_Details

Receivables (Details) (USD $)	Mar. 31, 2014	Sep. 30, 2013
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Receivables, gross	$390,889	$309,906
Allowance for doubtful accounts	-3,855	-2,461
Receivables, net	387,034	307,445
Trade Accounts Receivable [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Receivables, gross	344,248	282,923
Vendor Rebates and Programs [Member]	'	'
Accounts, Notes, Loans and Financing Receivable [Line Items]	'	'
Receivables, gross	$46,641	$26,983

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	$80,623	'	$80,623	'	$69,074
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	-33,475	'	-33,475	'	-29,891
Property, Plant and Equipment, Net	47,148	'	47,148	'	39,183
Depreciation	2,080	1,732	4,054	3,449	'
Land [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	2,509	'	2,509	'	1,932
Building and Leasehold Improvements [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	19,456	'	19,456	'	14,914
Machinery, Furniture, and Equipment [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	42,023	'	42,023	'	38,032
Computer Equipment [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	12,805	'	12,805	'	9,868
Construction in Progress [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, Plant and Equipment, Gross	$3,830	'	$3,830	'	$4,328

Intangibles_Changes_in_the_Car

Intangibles (Changes in the Carrying Value of Goodwill) (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Goodwill and Intangibles [Abstract]	'
Goodwill, Beginning Balance	$71,150
Acquisition activity	1,092
Foreign exchange	304
Goodwill, Ending Balance	$72,546

Intangibles_Schedule_Of_Intang

Intangibles (Schedule Of Intangible Assets) (Details) (USD $)

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

In Thousands, unless otherwise specified

Customer Relationships [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Noncompete Agreements [Member]

Technology [Member]

Technology [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Noncompete Agreements [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Noncompete Agreements [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Gross

$45,152

$43,203

$37,752

$35,797

$373

$450

$5,830

$5,830

$1,197

$1,126

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization

-12,084

-10,388

-9,714

-8,393

-136

-185

-1,016

-1,281

-953

-794

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Net, Total

33,068

32,815

28,038

27,404

237

265

4,814

4,549

244

332

'

'

'

'

'

'

'

'

'

'

'

'

Indefinite-Lived Intangible Assets (Excluding Goodwill)

10,120

7,675

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible Assets, Net

43,188

40,490

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Useful Life

'

'

'

'

'

'

'11 years

'11 years

'

'

'9 years

'9 years

'1 year

'1 year

'2 years

'2 years

'20 years

'20 years

'5 years

'5 years

'7 years

'7 years

Intangible Assets, Gross (Excluding Goodwill)

$55,272

$50,878

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangibles_Schedule_of_Expect

Intangibles (Schedule of Expected Amortization Expense) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Goodwill and Intangibles [Abstract]	'	'	'	'	'
Remainder of 2014	$1,654	'	$1,654	'	'
Year Two (2015)	2,989	'	2,989	'	'
Year Three (2016)	2,862	'	2,862	'	'
Year Four (2017)	2,782	'	2,782	'	'
Year Five (2018)	2,765	'	2,765	'	'
Thereafter	20,016	'	20,016	'	'
Finite-Lived Intangible Assets, Net, Total	33,068	'	33,068	'	32,815
Amortization of Intangible Assets	$831	$786	$1,671	$1,467	'

Debt_Narrative_Details

Debt (Narrative) (Details)	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
	GBP (£)	Bank Of America And Wells Fargo Facilities [Member]	Wells Fargo Facility [Member]	Wells Fargo Facility [Member]	Overdraft Facility [Member]	Minimum [Member]	Minimum [Member]	Maximum [Member]	Maximum [Member]
		USD ($)	GBP (£)	GBP (£)	GBP (£)	Bank Of America And Wells Fargo Facilities [Member]	Wells Fargo Facility [Member]	Bank Of America And Wells Fargo Facilities [Member]	Wells Fargo Facility [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'	'	'	'	'
Maximum Borrowing Capacity	£ 20,000,000	$200,000,000	'	'	£ 10,000,000	'	'	'	'
Debt Instrument, Basis Spread on Variable Rate	'	'	'	'	'	0.95%	0.95%	1.50%	1.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	'	'	'	'	'	0.15%	0.15%	0.25%	0.25%
Termination Date	'	1-Nov-16	1-Nov-16	'	'	'	'	'	'
Line of Credit Facility, Increase (Decrease) in Borrowing Capacity	'	'	'	7,500,000	'	'	'	'	'
Interest Rate at Period End	'	1.04%	1.41%	'	'	'	'	'	'
Line of Credit Facility, Covenant Terms, Minimum Tangible Net Worth	'	'	£ 5,000,000	'	'	'	'	'	'

Debt_Schedule_of_Longterm_Debt

Debt (Schedule of Long-term Debt Instruments) (Details) (USD $)	Mar. 31, 2014		Sep. 30, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'		'
Total debt and capital lease obligations	$112,584		$18,920
Less: Long-term portion of capital lease obligations	-3		-16
Total debt and capital lease obligations included in current liabilities	112,581		18,904
Domestic Line of Credit [Member]	'		'
Debt Instrument [Line Items]	'		'
Total debt and capital lease obligations	112,200		16,300
Foreign Line of Credit [Member]	'		'
Debt Instrument [Line Items]	'		'
Total debt and capital lease obligations	333		2,501
Capital Lease Obligations [Member]	'		'
Debt Instrument [Line Items]	'		'
Total debt and capital lease obligations	$51	[1]	$119	[1]
[1]	The capital lease obligations have varying maturity dates.

Common_Stock_and_StockBased_Aw1

Common Stock and Stock-Based Awards (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Shares of common stock available for issuance	805,463	'	805,463	'	815,260
Number Of Outstanding Options	13,583	'	13,583	'	'
Weighted average exercise price, Outstanding at end of year	$17.43	'	$17.43	'	'
Award expiration period	'	'	'10 years	'	'
Stock option grants	'	'	0	0	'
Compensation Expense	$1,833	$1,465	$2,938	$2,192	'
Restricted Stock [Member]	'	'	'	'	'
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Shares issued during the period	'	'	5,300	3,100	'
Restricted Stock [Member] | Director [Member]	'	'	'	'	'
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Grants in Period	'	'	4,505	6,000	'
ESPP [Member]	'	'	'	'	'
Share-Based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'
Employee Stock Purchase Plan Discount Rate	'	'	95.00%	'	'
Employee Stock Purchase Plan Payroll Deduction Rate Minimum	'	'	1.00%	'	'
Employee Stock Purchase Plan Payroll Deduction Rate Maximum	'	'	10.00%	'	'
Employee Stock Purchase Plan Annual Limit	'	'	$20	'	'
Maximum shares per purchase period	'	'	200	'	'
Shares issued during the period	'	'	2,388	2,750	'

Common_Stock_and_StockBased_Aw2

Common Stock and Stock-Based Awards (Stock Options Activity) (Details) (USD $)	Mar. 31, 2014
Common Stock and Stock-Based Awards [Abstract]	'
Outstanding at beginning of year	13,583
Outstanding at end of year	13,583
Weighted average exercise price, Outstanding at beginning of year	$17.43
Weighted average exercise price, Outstanding at end of year	$17.43

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended		6 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
					Domestic Tax Authority [Member]	State and Local Jurisdiction [Member]	Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]	'	'	'	'	'	'	'
Effective Income Tax Rate, Continuing Operations	38.60%	37.90%	38.80%	38.10%	'	'	'
Open Tax Year	'	'	'	'	'2009	'2008	'2011

Computation_Of_Earnings_Per_Sh1

Computation Of Earnings Per Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Computation Of Earnings Per Share [Abstract]	'	'	'	'
Net income	$16,776	$15,100	$35,215	$31,851
Weighted Average Number of Shares Outstanding, Basic	12,712	12,674	12,709	12,669
Weighted Average Number Diluted Shares Outstanding Adjustment	36	35	36	33
Weighted Average Number of Shares Outstanding, Diluted, Total	12,748	12,709	12,745	12,702
Basic EPS	$1.32	$1.19	$2.77	$2.51
Diluted EPS	$1.32	$1.19	$2.76	$2.51

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income [Abstract]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	$3,304	$1,524	$1,918	$1,542
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	640	-3,498	2,026	-3,516
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$3,944	($1,974)	$3,944	($1,974)

Related_Parties_Details

Related Parties (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013
Related Party Transaction [Line Items]	'	'	'	'	'
Product sales to related party	$16,787	$16,799	$37,487	$35,805	'
Feeders Advantage [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Equity Method Investment Ownership Percentage	50.00%	'	50.00%	'	'
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party	265	260	591	557	'
Product sales to related party	16,787	16,799	37,487	35,805	'
Customer Concentration Risk	'	'	3.00%	3.00%	'
Due to Related Parties, Current	$2,392	'	$2,392	'	$777
Sales Revenue, Net [Member] | Feeders Advantage [Member]	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Customer Concentration Risk	2.00%	3.00%	'	'	'

Statements_of_Cash_Flows_Suppl1

Statements of Cash Flows - Supplemental and Noncash Disclosures (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statements of Cash Flows — Supplemental and Noncash Disclosures [Abstract]	'	'
Cash Paid For Interest	$554	$382
Cash paid for income taxes	21,728	16,829
Property and equipment acquisitions financed with accounts payable	$164	$391