LCI Industries (LCII) 10-K 28 Feb 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 21, 2014	Jun. 30, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'DREW INDUSTRIES INC	'	'
Entity Central Index Key	'0000763744	'	'
Trading Symbol	'dw	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Common Stock, Shares Outstanding	'	23,507,416	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Public Float	'	'	$770,779,400
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'

Consolidated_Statements_Of_Inc

Consolidated Statements Of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Consolidated Statements Of Income [Abstract]	'		'		'
Net sales	$1,015,576	[1]	$901,123	[1]	$681,166	[1]
Cost of sales	802,467		732,464		541,445
Gross profit	213,109		168,659		139,721
Selling, general and administrative expenses	132,935		109,071		91,173
Executive succession	1,876		1,456		'
Operating profit	78,298	[2]	58,132	[2]	48,548	[2]
Interest expense, net	351		330		292
Income before income taxes	77,947		57,802		48,256
Provision for income taxes	27,828		20,462		18,197
Net income	$50,119		$37,340		$30,059
Net income per common share:	'		'		'
Basic	$2.15		$1.66		$1.35
Diluted	$2.11		$1.64		$1.34
Weighted average common shares outstanding:	'		'		'
Basic	23,321		22,558		22,267
Diluted	23,753		22,828		22,444
[1]	Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.
[2]	Certain general and administrative expenses are allocated between the segments based upon net sales or operating profit, depending upon the nature of the expense.

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets	'		'
Cash and cash equivalents	$66,280		$9,939
Accounts receivable, net	31,015		21,846
Inventories, net	101,211		97,367
Deferred taxes	12,557		10,073
Prepaid expenses and other current assets	14,467		14,798
Total current assets	225,530		154,023
Fixed assets, net	125,982		107,936
Goodwill	21,545		21,177
Other intangible assets, net	59,392		69,218
Deferred taxes	12,236		14,993
Other assets	8,499		6,521
Total assets	453,184	[1]	373,868	[1]
Current liabilities	'		'
Accounts payable, trade	24,063		21,725
Dividend payable	46,706		'
Accrued expenses and other current liabilities	47,422		48,055
Total current liabilities	118,191		69,780
Other long-term liabilities	21,380		19,843
Total liabilities	139,571		89,623
Stockholders' equity	'		'
Common stock, par value $.01 per share: authorized 30,000 shares; issued 26,058 shares at December 31, 2013 and 25,376 shares at December 31, 2012	261		254
Paid-in capital	126,360		100,412
Retained earnings	216,459		213,046
Stockholders' equity before treasury stock	343,080		313,712
Treasury stock, at cost, 2,684 shares at December 31, 2013 and December 31, 2012	-29,467		-29,467
Total stockholders' equity	313,613		284,245
Total liabilities and stockholders' equity	$453,184		$373,868
[1]	Segment assets include accounts receivable, inventories, fixed assets, goodwill and other intangible assets. Corporate and other assets include cash and cash equivalents, prepaid expenses and other current assets, deferred taxes, and other assets.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheets [Abstract]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	26,058,000	25,376,000
Treasury stock, shares	2,684,000	2,684,000

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$50,119	$37,340	$30,059
Adjustments to reconcile net income to cash flows provided by operating activities:	'	'	'
Depreciation and amortization	27,500	25,665	20,522
Stock-based compensation expense	10,839	6,318	4,587
Deferred taxes	269	-668	821
Other non-cash items	1,867	654	1,570
Changes in assets and liabilities, net of acquisitions of businesses:	'	'	'
Accounts receivable, net	-9,013	774	-5,007
Inventories, net	-3,403	-4,727	-14,738
Prepaid expenses and other assets	-2,288	-10,738	-1,848
Accounts payable, trade	2,296	5,983	4,391
Accrued expenses and other liabilities	4,491	12,088	-3,526
Net cash flows provided by operating activities	82,677	72,689	36,831
Cash flows from investing activities:	'	'	'
Capital expenditures	-32,595	-32,026	-24,317
Acquisitions of businesses	-4,750	-1,473	-50,302
Proceeds from sales of fixed assets	1,444	5,420	1,338
Proceeds from maturity of short-term investments	'	'	5,000
Other investing activities	-154	-119	-843
Net cash flows used for investing activities	-36,055	-28,198	-69,124
Cash flows from financing activities:	'	'	'
Exercise of stock options and deferred stock units	15,175	8,217	1,188
Proceeds from line of credit borrowings	135,452	52,227	130,500
Repayments under line of credit borrowings	-135,452	-52,227	-130,500
Payment of special dividend	'	-45,038	'
Payment of contingent consideration related to acquisitions	-5,456	-4,315	-398
Purchase of treasury stock	'	'	-626
Other financing activities	'	'	-167
Net cash flows provided by (used for) financing activities	9,719	-41,136	-3
Net increase (decrease) in cash	56,341	3,355	-32,296
Cash and cash equivalents at beginning of year	9,939	6,584	38,880
Cash and cash equivalents at end of year	66,280	9,939	6,584
Supplemental disclosure of cash flow information:	'	'	'
Interest	364	369	284
Income taxes, net of refunds	$26,799	$24,145	$18,909

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Common Stock [Member]	Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
In Thousands
Balance - at Dec. 31, 2010	$247	$79,986	$192,067	($28,841)	$243,459
Net income	'	'	30,059	'	30,059
Issuance of shares of common stock pursuant to stock options, deferred stock units and restricted stock	1	996	'	'	997
Income tax benefit relating to issuance of common stock pursuant to stock options, deferred stock units and restricted stock	'	216	'	'	216
Reversal of deferred tax assets due to expiration of vested stock options	'	-2,496	'	'	-2,496
Stock-based compensation expense	'	4,587	'	'	4,587
Issuance of deferred stock units relating to prior year compensation	'	1,100	'	'	1,100
Purchase of shares of treasury stock	'	'	'	-626	-626
Balance - at Dec. 31, 2011	248	84,389	222,126	-29,467	277,296
Net income	'	'	37,340	'	37,340
Issuance of shares of common stock pursuant to stock options, deferred stock units and restricted stock	6	7,853	'	'	7,859
Income tax benefit relating to issuance of common stock pursuant to stock options, deferred stock units and restricted stock	'	270	'	'	270
Stock-based compensation expense	'	6,318	'	'	6,318
Issuance of deferred stock units relating to prior year compensation	'	200	'	'	200
Special cash dividend ($2.00 per share)	'	'	-45,038	'	-45,038
Dividend equivalents on deferred stock units, stock awards and restricted stock	'	1,382	-1,382	'	'
Balance - at Dec. 31, 2012	254	100,412	213,046	-29,467	284,245
Net income	'	'	50,119	'	50,119
Issuance of shares of common stock pursuant to stock options, deferred stock units and restricted stock	7	13,440	'	'	13,447
Income tax benefit relating to issuance of common stock pursuant to stock options, deferred stock units and restricted stock	'	1,534	'	'	1,534
Stock-based compensation expense	'	10,839	'	'	10,839
Issuance of deferred stock units relating to prior year compensation	'	135	'	'	135
Special cash dividend ($2.00 per share)	'	'	-46,706	'	-46,706
Balance - at Dec. 31, 2013	$261	$126,360	$216,459	($29,467)	$313,613

Consolidated_Statements_Of_Sto1

Consolidated Statements Of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements Of Stockholders' Equity [Abstract]	'	'	'
Issuance of common stock, shares	681,426	550,352	151,150
Issuance of deferred stock units, shares	3,776	7,548	47,506
Special cash dividend, per share	$2	$2	'
Purchase of treasury stock, shares	535,135	'	33,856

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Basis of Presentation
	The Consolidated Financial Statements include the accounts of Drew Industries Incorporated and its wholly-owned subsidiaries (collectively, "Drew" or the "Company"). Drew has no unconsolidated subsidiaries. Drew operates through its wholly-owned subsidiary, Lippert Components, Inc. and its subsidiaries (collectively, "Lippert Components"). Effective December 2013, the Company completed the tax-free reorganization of Kinro, Inc. and its subsidiaries with and into Lippert Components. Drew, through Lippert Components, manufactures a broad array of components for recreational vehicles ("RVs") and manufactured homes, and to a lesser extent manufactures components for modular housing, truck caps and buses, as well as for trailers used to haul boats, livestock, equipment and other cargo. At December 31, 2013, the Company operated 31 manufacturing facilities in 11 states.
	Because of fluctuations in dealer inventories, and the impact of international, national and regional economic conditions and consumer confidence on retail sales of RVs and other products for which we sell our components, current and future seasonal industry trends may be different than in prior years.
	The Company is not aware of any significant events, except as disclosed in the Notes to Consolidated Financial Statements, which occurred subsequent to the balance sheet date but prior to the filing of this report that would have a material impact on the Consolidated Financial Statements.
	All significant intercompany balances and transactions have been eliminated. Certain prior year balances have been reclassified to conform to current year presentation.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents.
	Accounts Receivable
	Accounts receivable are stated at historical carrying value, net of write-offs and allowances. The Company establishes allowances based upon historical experience and any specific customer collection issues identified by the Company. Uncollectible accounts receivable are written off when a settlement is reached or when the Company has determined the balance will not be collected.
	Inventories
	Inventories are stated at the lower of cost (using the first-in, first-out method) or market. Cost includes material, labor and overhead; market is replacement cost or realizable value after allowance for costs of distribution.
	Fixed Assets
	Fixed assets which are owned are stated at cost less accumulated depreciation, and are depreciated on a straight-line basis over the estimated useful lives of the properties and equipment. Leasehold improvements and leased equipment are amortized over the shorter of the lives of the leases or the underlying assets. Maintenance and repair costs that do not improve service potential or extend economic life are expensed as incurred; significant improvements are capitalized.
	Income Taxes
	Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse.
	The Company accounts for uncertainty in tax positions by recognizing in its financial statements the impact of a tax position only if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Further, the Company assesses the tax benefits of the tax positions in its financial statements based on experience with similar tax positions, information obtained during the examination process and the advice of experts. The Company recognizes previously unrecognized tax benefits upon the earlier of the expiration of the period to assess tax in the applicable taxing jurisdiction or when the matter is constructively settled and upon changes in statutes or regulations and new case law or rulings.
	The Company classifies interest and penalties related to income taxes as income tax expense in its Consolidated Financial Statements.
	Goodwill
	Goodwill represents the excess of the total consideration given in an acquisition of a business over the fair value of the net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but instead is tested at the reporting unit level for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist. In 2013, the Company assessed qualitative factors of its reporting units to determine whether it was more likely than not the fair value of the reporting unit was less than its carrying amount, including goodwill. The qualitative impairment test consists of an assessment of qualitative factors, including general economic and industry conditions, market share and input costs. In 2012 and 2011, the impairment tests were based on fair value, determined using discounted cash flows, appraised values or management's estimates.
	Other Intangible Assets
	Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. The amortization of other intangible assets is done using a method, straight-line or accelerated, which best reflects the pattern in which the estimated future economic benefits of the asset will be consumed.
	Impairment of Long-Lived Assets
	Long-lived assets, other than goodwill, are tested for impairment when changes in circumstances indicate their carrying value may not be recoverable. A determination of impairment, if any, is made based on the undiscounted value of estimated future cash flows, salvage value or expected net sales proceeds, depending on the circumstances. Impairment is measured as the excess of the carrying value over the estimated fair value of such assets.
	Asset Retirement Obligations
	Asset retirement obligations are legal obligations associated with the retirement of long-lived assets. The Company records asset retirement obligations on certain of its owned and leased facilities and leased machinery and equipment. These liabilities are initially recorded at fair value and are adjusted for changes resulting from revisions to the timing or the amount of the original estimate.
	Environmental Liabilities
	Accruals for environmental matters are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated, based upon current law and existing technologies. These amounts, which are not discounted and are exclusive of claims against potentially responsible third parties, are adjusted periodically as assessment and remediation efforts progress or additional technical or legal information becomes available. Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies and remedial activities, advances in technology, changes in environmental laws and regulations and their application, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other potentially responsible parties and the Company's ability to obtain contributions from other parties, and the lengthy time periods over which site remediation occurs. It is possible some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably against the Company, and could materially affect operating results when resolved in future periods.
	Financial Instruments
	The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximated their fair value due to the short-term nature of these instruments.
	Stock-Based Compensation
	All stock-based compensation awards are expensed over their vesting period, based on fair value. For awards that have a service only vesting condition, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service periods. For awards with a performance vesting condition, which are subject to certain pre-established performance targets, the Company recognizes stock-based compensation expense on a graded-vesting basis to the extent it is probable the performance targets will be met. The fair value for stock options is determined using the Black-Scholes option-pricing model, while the fair values of deferred stock units and restricted stock are based on the market price of the Company's Common Stock, all on the date the stock-based awards are granted.
	Revenue Recognition
	The Company recognizes revenue when products are shipped and the customer takes ownership and assumes risk of loss, collectability is reasonably assured, and the sales price is fixed or determinable. Sales taxes collected from customers and remitted to governmental authorities, which are not significant, are accounted for on a net basis and therefore are excluded from net sales in the Consolidated Statements of Income.
	Shipping and Handling Costs
	The Company records shipping and handling costs within selling, general and administrative expenses. Such costs aggregated $36.4 million, $32.7 million and $24.6 million in the years ended December 31, 2013, 2012 and 2011, respectively.
	Legal Costs
	The Company expenses all legal costs associated with litigation as incurred. Legal expenses are included in selling, general and administrative expenses in the Consolidated Statements of Income.
	Fair Value Measurements
	Fair value is determined using a hierarchy that has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs.
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, net sales and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including, but not limited to, those related to product returns, sales and purchase rebates, accounts receivable, inventories, goodwill and other intangible assets, income taxes, warranty obligations, self-insurance obligations, lease terminations, asset retirement obligations, long-lived assets, executive succession, post-retirement benefits, stock-based compensation, segment allocations, contingent consideration, environmental liabilities, contingencies and litigation. The Company bases its estimates on historical experience, other available information and various other assumptions believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other resources. Actual results and events could differ significantly from management estimates.

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	2. SEGMENT REPORTING
	The Company has two reportable segments; the recreational vehicle products segment (the "RV Segment") and the manufactured housing products segment (the "MH Segment"). Intersegment sales are insignificant.
	The RV Segment, which accounted for 88 percent, 87 percent and 84 percent of consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively, manufactures a variety of products used primarily in the production of RVs, including:
	ÏSteel chassis for towable RVs	ÏAluminum windows and screens
	ÏAxles and suspension solutions for towable RVs	ÏChassis components
	ÏSlide-out mechanisms and solutions	ÏFurniture and mattresses
	ÏThermoformed bath, kitchen and other products	ÏEntry, baggage, patio and ramp doors
	ÏEntry steps	ÏAwnings
	ÏManual, electric and hydraulic stabilizer and leveling systems	ÏOther accessories
	The Company also supplies certain of these products to the RV aftermarket. In addition, the Company manufactures components for adjacent industries, including buses, trailers used to haul boats, livestock, equipment and other cargo, and truck caps. Approximately 81 percent of the Company's RV Segment net sales in 2013 were of products to original equipment manufacturers ("OEMs") of travel trailer and fifth-wheel RVs.
	The MH Segment, which accounted for 12 percent, 13 percent and 16 percent of consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively, manufactures a variety of products used in the production of manufactured homes and to a lesser extent, modular housing and mobile office units, including:
	ÏVinyl and aluminum windows and screens	ÏSteel chassis
	ÏThermoformed bath and kitchen products	ÏSteel chassis parts
	ÏSteel and fiberglass entry doors	ÏAxles
	ÏAluminum and vinyl patio doors
	The Company also supplies certain of these products to the manufactured housing aftermarket. Certain of the Company's MH Segment customers manufacture both manufactured homes and modular homes, and certain of the products manufactured by the Company are suitable for both types of homes. As a result, the Company is not always able to determine in which type of home its products are installed.
	Decisions concerning the allocation of the Company's resources are made by the Company's key executives, with oversight by the Board of Directors. This group evaluates the performance of each segment based upon segment operating profit or loss, defined as income or loss before interest, executive succession and income taxes. Decisions concerning the allocation of resources are also based on each segment's utilization of assets. Management of debt is a corporate function. The accounting policies of the RV and MH Segments are the same as those described in Note 1 of the Notes to Consolidated Financial Statements.
	Effective with the second quarter of 2013, in connection with the management succession and relocation of the corporate office from New York to Indiana, corporate expenses, accretion related to contingent consideration and other non-segment items, which were previously reported on separate lines, have been included as part of segment operating profit. Corporate expenses are allocated between the segments based upon net sales. Accretion related to contingent consideration and other non-segment items are included in the segment to which they relate. The segment disclosures from prior years have been reclassified to conform to the current year presentation.
	Information relating to segments follows for the years ended December 31:
					Segments				Corporate
	(In thousands)		RV		MH		Total		and Other			Total
	2013
	Net sales to external customers(a)	$	893,694	$	121,882	$	1,015,576	$	-		$	1,015,576
	Operating profit (loss)(b)	$	68,248	$	11,926	$	80,174	$	(1,876	)	$	78,298
	Total assets(c)	$	306,139	$	32,948	$	339,087	$	114,097		$	453,184
	Expenditures for long-lived assets(d)	$	34,989	$	2,682	$	37,671	$	-		$	37,671
	Depreciation and amortization	$	24,615	$	2,806	$	27,421	$	79		$	27,500
	2012
	Net sales to external customers(a)	$	780,925	$	120,198	$	901,123	$	-		$	901,123
	Operating profit (loss)(b)	$	47,172	$	12,416	$	59,588	$	(1,456	)	$	58,132
	Total assets(c)	$	281,728	$	35,668	$	317,396	$	56,472		$	373,868
	Expenditures for long-lived assets(d)	$	30,893	$	2,739	$	33,632	$	-		$	33,632
	Depreciation and amortization	$	22,750	$	2,822	$	25,572	$	93		$	25,665
	2011
	Net sales to external customers(a)	$	570,643	$	110,523	$	681,166	$	-		$	681,166
	Operating profit(b)	$	37,715	$	10,833	$	48,548	$	-		$	48,548
	Total assets(c)	$	268,395	$	40,737	$	309,132	$	41,951		$	351,083
	Expenditures for long-lived assets(d)	$	66,931	$	3,378	$	70,309	$	103		$	70,412
	Depreciation and amortization	$	17,593	$	2,834	$	20,427	$	95		$	20,522
	(a) Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.
	(b) Certain general and administrative expenses are allocated between the segments based upon net sales or operating profit, depending upon the nature of the expense.
	(c) Segment assets include accounts receivable, inventories, fixed assets, goodwill and other intangible assets. Corporate and other assets include cash and cash equivalents, prepaid expenses and other current assets, deferred taxes, and other assets.
	(d) Expenditures for long-lived assets include capital expenditures, as well as fixed assets, goodwill and other intangible assets purchased as part of the acquisition of businesses. The Company purchased $4.8 million, $1.5 million and $45.2 million of long-lived assets, as part of the acquisitions of businesses in the years ended December 31, 2013, 2012 and 2011, respectively.
	Net sales by product were as follows for the years ended December 31:
	(In thousands)		2013		2012		2011
	RV Segment:
	Chassis, chassis parts and
	slide-out mechanisms	$	493,244	$	443,850	$	316,580
	Windows, doors and screens		181,934		173,436		126,130
	Furniture and mattresses		100,196		78,082		67,088
	Axles and suspension solutions		69,818		57,275		43,669
	Other		48,502		28,282		17,176
	Total RV Segment net sales	$	893,694	$	780,925	$	570,643
	MH Segment:
	Windows, doors and screens	$	67,029	$	63,655	$	58,377
	Chassis and chassis parts		38,359		41,874		38,754
	Other		16,494		14,669		13,392
	Total MH Segment net sales	$	121,882	$	120,198	$	110,523
	Total net sales	$	1,015,576	$	901,123	$	681,166
	The composition of net sales was as follows for the years ended December 31:
	(In thousands)		2013		2012		2011
	Net sales:
	RV Segment:
RV OEMs
Travel trailers and fifth-wheels	$	727,783	$	653,478	$	497,544
Motorhomes		47,937		34,612		17,492
RV aftermarket		25,334		19,119		14,660
Adjacent industries		92,640		73,716		40,947
Total RV Segment net sales	$	893,694	$	780,925	$	570,643
MH Segment:
Manufactured housing OEMs	$	80,245	$	80,392	$	77,087
Manufactured housing aftermarket		13,719		13,110		13,073
Adjacent industries		27,918		26,696		20,363
Total MH Segment net sales	$	121,882	$	120,198	$	110,523
Total net sales	$	1,015,576	$	901,123	$	681,166

Acquisitions_Goodwill_And_Othe

Acquisitions, Goodwill And Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Acquisitions, Goodwill And Other Intangible Assets [Abstract]	'
Acquisitions, Goodwill And Other Intangible Assets	'
	3. ACQUISITIONS, GOODWILL AND OTHER INTANGIBLE ASSETS
	Acquisition in 2014
	Innovative Design Solutions, Inc.
	On February 27, 2014, the Company acquired Innovative Design Solutions, Inc. ("IDS"), a designer, developer and manufacturer of electronic systems encompassing a wide variety of RV applications. IDS also manufactures electronic systems for automotive, medical and industrial applications. IDS had annual sales of approximately $19 million in 2013, of which $13 million were to the Company. The purchase price was $36.0 million, of which $34.2 million was paid at closing, with the balance to be paid out annually over the subsequent three years, plus contingent consideration based on future sales.
	Acquisitions in 2013
	Fortress Technologies, LLC
	On December 13, 2013, the Company acquired the business and certain assets of Fortress Technologies, LLC ("Fortress"). Fortress is a manufacturer of specialized RV chassis. The acquired business had annualized sales of approximately $3 million. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
	Cash consideration	$	3,299
	Working capital, net	$	(111	)
	Net tangible assets		3,410
	Total fair value of net assets acquired	$	3,299
	Midstates Tool & Die and Engineering, Inc.
	On June 24, 2013, the Company acquired the business and certain assets of Midstates Tool & Die and Engineering, Inc. ("Midstates"). Midstates is a manufacturer of tools and dies, as well as automation equipment. The acquired business had annualized sales of approximately $2 million. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
	Cash consideration	$	1,451
	Working capital, net	$	20
	Non-compete agreement		40
	Net tangible assets		1,023
	Total fair value of net assets acquired	$	1,083
	Goodwill (tax deductible)	$	368
	The consideration given was greater than the fair value of assets acquired, resulting in goodwill, because the Company anticipates the automation capabilities of the acquired business will help to improve its operating efficiencies.
	Acquisition in 2012
	RV Entry Door Operation
	On February 21, 2012, the Company acquired the business and certain assets of the United States RV entry door operation of Euramax International, Inc. The acquired business had annualized sales of approximately $6 million. The purchase price was $1.7 million, of which $1.2 million was paid at closing, with the balance to be paid over the next three years. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
	Cash consideration	$	1,164
	Present value of future payments		482
	Total fair value of consideration given	$	1,646
	Customer relationships	$	270
	Other identifiable intangible assets		40
	Net tangible assets		785
	Total fair value of net assets acquired	$	1,095
	Goodwill (tax deductible)	$	551
	The customer relationships are being amortized over their estimated useful life of 7 years. The consideration given was greater than the fair value of the net assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing manufacturing capacity and purchasing power to reduce costs in this product line.
	Acquisitions in 2011
	The five acquisitions completed in 2011 added approximately $40 million in net sales for 2011 subsequent to their respective acquisition dates. Assuming that each of the acquisitions completed in 2011 had been completed at the beginning of 2011, net sales for 2011 would have been $55 million higher.
	M&M Fabricators
	On December 1, 2011, the Company acquired the business and certain assets of M&M Fabricators. M&M had annualized sales of approximately $3 million, comprised of chassis modification primarily for producers of transit buses, specialized commercial vehicles, and Class A and Class C motorhome RVs. The purchase price was $1.0 million paid at closing, plus contingent consideration based on future sales of this operation. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
	Cash consideration	$	961
	Contingent consideration		450
	Total fair value of consideration given	$	1,411
	Customer relationships	$	330
	Net tangible assets		820
	Total fair value of net assets acquired	$	1,150
	Goodwill (tax deductible)	$	261
	The consideration given was greater than the fair value of the assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing experience and purchasing power with respect to these product lines.
	Starquest Products, LLC
	On August 29, 2011, the Company acquired the business and assets of Starquest Products, LLC and its affiliated company. Starquest had annual sales of approximately $22 million, comprised primarily of windows for truck caps, which are fiberglass enclosures that fit over the bed of pick-up trucks, painted to automotive standards and designed to exact truck bed specifications. Starquest also manufactures windows and doors for horse trailers and certain types of buses. The purchase price was $22.6 million paid at closing, plus contingent consideration based on future sales of certain products. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
	Cash consideration	$	22,600
	Contingent consideration		40
	Total fair value of consideration given	$	22,640
	Customer relationships	$	12,540
	Other identifiable intangible assets		1,884
	Net tangible assets		2,871
	Total fair value of net assets acquired	$	17,295
	Goodwill (tax deductible)	$	5,345
	The customer relationships intangible asset is being amortized over its estimated useful life of 15 years. The consideration given was greater than the fair value of the assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing experience and purchasing power with respect to these product lines.
	EA Technologies, LLC
	On August 22, 2011, the Company acquired from EA Technologies, LLC the business and certain assets of the towable RV chassis and slide-out mechanism operation previously owned by Dexter Chassis Group. The acquired business had annual sales of more than $40 million. The purchase price was $13.5 million paid at closing. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
	The acquisition of this business was recorded on the acquisition date as follows (in thousands):
Cash consideration	$	13,500
Customer relationships	$	6,960
Net tangible assets		2,339
Total fair value of net assets acquired	$	9,299
Goodwill (tax deductible)	$	4,201
The customer relationships intangible asset is being amortized over its estimated useful life of 15 years.
The consideration given was greater than the fair value of the assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing experience and manufacturing capacity with respect to these product lines.
M-Tec Corporation
On July 19, 2011, the Company acquired certain assets and business of M-Tec Corporation. The acquired business had annual sales of approximately $12 million comprised primarily of components for RVs, mobile office units and manufactured homes. The purchase price was $6.0 million paid at closing, plus contingent consideration based on future sales of existing products. The results of the acquired business have been included in either the Company's RV or MH Segments, as appropriate, and in the Consolidated Statements of Income since the acquisition date.
The acquisition of this business was recorded on the acquisition date as follows (in thousands):
Cash consideration	$	5,990
Contingent consideration		450
Total fair value of consideration given	$	6,440
Customer relationships	$	2,310
Other identifiable intangible assets		315
Net tangible assets		1,723
Total fair value of net assets acquired	$	4,348
Goodwill (tax deductible)	$	2,092
The customer relationships intangible asset is being amortized over its estimated useful life of 15 years. The consideration given was greater than the fair value of the assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing manufacturing expertise and purchasing power with respect to these product lines.
Home-Style Industries
On January 28, 2011, the Company acquired the operating assets and business of Home-Style Industries, Inc., and its affiliated companies. Home-Style had annual sales of approximately $12 million comprised primarily of a full line of upholstered furniture and mattresses primarily for towable RVs, in the Northwest U.S. market. The purchase price was $7.3 million paid at closing, plus contingent consideration based on future sales of existing products in specific geographic regions. The results of the acquired business have been included in the Company's RV Segment and in the Consolidated Statements of Income since the acquisition date.
The acquisition of this business was recorded on the acquisition date as follows (in thousands):
Cash consideration	$	7,250
Contingent consideration		150
Total fair value of consideration given	$	7,400
Customer relationships	$	3,350
Other identifiable intangible assets		365
Net tangible assets		2,582
Total fair value of net assets acquired	$	6,297
Goodwill (tax deductible)	$	1,103
The customer relationships intangible asset is being amortized over its estimated useful life of 12 years. The consideration given was greater than the fair value of the assets acquired, resulting in goodwill, because the Company anticipates leveraging its existing experience and purchasing power with respect to these product lines.
Goodwill
Goodwill by reportable segment was as follows:
(In thousands)		RV Segment			MH Segment			Total
Accumulated cost	$	48,773		$	9,251		$	58,024
Accumulated impairment		(41,276	)		(9,251	)		(50,527	)
Net balance – December 31, 2010		7,497			-			7,497
Acquisitions – 2011		12,228			774			13,002
Net balance – December 31, 2011		19,725			774			20,499
Acquisitions – 2012		678			-			678
Net balance – December 31, 2012		20,403			774			21,177
Acquisitions – 2013		368			-			368
Net balance – December 31, 2013	$	20,771		$	774		$	21,545
Accumulated cost	$	62,047		$	10,025		$	72,072
Accumulated impairment		(41,276	)		(9,251	)		(50,527	)
Net balance – December 31, 2013	$	20,771		$	774		$	21,545
The Company performed its annual goodwill impairment procedures for all of its reporting units as of November 30 2013, 2012 and 2011, and concluded no goodwill impairment existed at that time. The Company plans to update its review as of November 30, 2014, or sooner if events occur or circumstances change that could reduce the fair value of a reporting unit below its carrying value.
Other Intangible Assets
Other intangible assets, by segment, consisted of the following at December 31:
(In thousands)		2013		2012
RV Segment	$	56,954	$	66,191
MH Segment		2,438		3,027
Other intangible assets	$	59,392	$	69,218
Other intangible assets consisted of the following at December 31, 2013:
		Gross		Accumulated		Net	Estimated Useful
(In thousands)		Cost		Amortization		Balance	Life in Years
Customer relationships	$	50,105	$	21,999	$	28,106		6 to 16
Patents		41,651		18,461		23,190		3 to 19
Tradenames		7,959		5,976		1,983		5 to 15
Non-compete agreements		3,866		2,210		1,656		3 to 6
Purchased research and
development		4,457		-		4,457	Indefinite
Other intangible assets	$	108,038	$	48,646	$	59,392
Other intangible assets consisted of the following at December 31, 2012:
		Gross		Accumulated		Net	Estimated Useful
(In thousands)		Cost		Amortization		Balance	Life in Years
Customer relationships	$	50,105	$	17,857	$	32,248		3 to 16
Patents		41,507		14,850		26,657		2 to 19
Tradenames		7,959		4,525		3,434		5 to 15
Non-compete agreements		4,989		2,567		2,422		1 to 7
Purchased research and
development		4,457		-		4,457	Indefinite
Other intangible assets	$	109,017	$	39,799	$	69,218
Amortization expense related to other intangible assets was as follows for the years ended December 31:
(In thousands)		2013		2012		2011
Cost of sales	$	3,610	$	4,492	$	3,393
Selling, general and administrative expenses		6,398		6,760		4,958
Amortization expense	$	10,008	$	11,252	$	8,351
Estimated amortization expense for other intangible assets for the next five years is as follows:
(In thousands)		2014		2015		2016		2017		2018
Cost of sales	$	3,890	$	4,028	$	4,175	$	3,816	$	3,081
Selling, general and
administrative expense	$	5,217	$	4,566	$	3,696	$	3,331	$	3,037
Amortization expense	$	9,107	$	8,594	$	7,871	$	7,147	$	6,118

Accounts_Receivable

Accounts Receivable	12 Months Ended
	Dec. 31, 2013
Accounts Receivable [Abstract]	'
Accounts Receivable	'
	4. ACCOUNTS RECEIVABLE
	The following table provides a reconciliation of the activity related to the Company's allowance for doubtful accounts receivable, for the years ended December 31:
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	677		$	858		$	499
	Provision for doubtful accounts		194			304			72
	Additions related to acquired businesses		5			-			129
	Recoveries		1			8			340
	Accounts written off		(172	)		(493	)		(182	)
	Balance at end of period	$	705		$	677		$	858
	In addition to the allowance for doubtful accounts receivable, the Company had an allowance for prompt payment discounts in the amount of $0.3 million at December 31, 2013 and 2012, respectively.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventories [Abstract]	'
Inventories	'
	5. INVENTORIES
	Inventories consisted of the following at December 31:
	(In thousands)		2013		2012
	Raw materials	$	84,279	$	78,434
	Work in process		3,038		2,074
	Finished goods		13,894		16,859
	Inventories, net	$	101,211	$	97,367

Fixed_Assets

Fixed Assets	12 Months Ended
	Dec. 31, 2013
Fixed Assets [Abstract]	'
Fixed Assets	'
	6. FIXED ASSETS
	Fixed assets consisted of the following at December 31:
						Estimated Useful
	(In thousands)		2013		2012	Life in Years
	Land	$	12,018	$	10,445
	Buildings and improvements		76,577		69,805		10 to 40
	Leasehold improvements		2,044		1,329		3 to 10
	Machinery and equipment		130,461		109,582		3 to 15
	Furniture and fixtures		17,745		13,738		3 to 8
	Construction in progress		2,771		6,190
	Fixed assets, at cost		241,616		211,089
	Less accumulated depreciation and
	amortization		115,634		103,153
	Fixed assets, net	$	125,982	$	107,936
	Depreciation and amortization of fixed assets was as follows for the years ended December 31:
	(In thousands)		2013		2012		2011
	Cost of sales	$	14,667	$	11,886	$	10,130
	Selling, general and administrative expenses		2,773		2,475		1,990
	Total	$	17,440	$	14,361	$	12,120

Accrued_Expenses_And_Other_Cur

Accrued Expenses And Other Current Liabilities	12 Months Ended
	Dec. 31, 2013
Accrued Expenses And Other Current Liabilities [Abstract]	'
Accrued Expenses And Other Current Liabilities	'
	7. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
	Accrued expenses and other current liabilities consisted of the following at December 31:
	(In thousands)		2013		2012
	Employee compensation and benefits	$	18,583	$	18,490
	Warranty		11,731		9,125
	Sales rebates		4,773		5,711
	Current portion of contingent consideration
	related to acquisitions		3,462		5,429
	Other		8,873		9,300
	Accrued expenses and other
	current liabilities	$	47,422	$	48,055
	Estimated costs related to product warranties are accrued at the time products are sold. In estimating its future warranty obligations, the Company considers various factors, including the Company's (i) historical warranty costs, (ii) current trends, (iii) product mix, and (iv) sales. The following table provides a reconciliation of the activity related to the Company's accrued warranty, including both the current and long-term portions, for the years ended December 31:
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	12,729		$	8,640		$	5,892
	Provision for warranty expense		13,874			12,383			6,750
	Warranty liability from acquired businesses		21			8			563
	Warranty costs paid		(9,299	)		(8,302	)		(4,565	)
	Total accrued warranty		17,325			12,729			8,640
	Less long-term portion		5,594			3,604			2,758
	Current accrued warranty	$	11,731		$	9,125		$	5,882

Retirement_And_Other_Benefit_P

Retirement And Other Benefit Plans	12 Months Ended
	Dec. 31, 2013
Retirement And Other Benefit Plans [Abstract]	'
Retirement And Other Benefit Plans	'
	8. RETIREMENT AND OTHER BENEFIT PLANS
	Defined Contribution Plan
	The Company maintains a discretionary defined contribution 401(k) profit sharing plan covering all eligible employees. The Company contributed $1.4 million, $1.1 million and $1.0 million to this plan during the years ended December 31, 2013, 2012 and 2011, respectively.
	Deferred Compensation Plan
	The Company has an Executive Non-Qualified Deferred Compensation Plan (the "Plan"). Pursuant to the Plan, certain management employees are eligible to defer all or a portion of their regular salary and incentive compensation. Participants deferred $1.7 million, $1.9 million and $2.0 million during the years ended December 31, 2013, 2012 and 2011, respectively. The amounts deferred under this Plan are credited with earnings or losses based upon changes in values of the notional investments elected by the Plan participants. Each Plan participant is fully vested in their deferred compensation and earnings credited to his or her account as all contributions to the Plan are made by the participant. The Company is responsible for certain costs of Plan administration, which are not significant, and will not make any contributions to the Plan. Pursuant to the Plan, payments to the Plan participants are made from the general unrestricted assets of the Company, and the Company's obligations pursuant to the Plan are unfunded and unsecured. Participants withdrew $0.2 million and $0.6 million from the Plan during the years ended December 31, 2013, and 2011, respectively. There were no participant withdrawals in 2012. At December 31, 2013 and 2012, deferred compensation of $9.4 million and $7.0 million, respectively, was recorded in other long-term liabilities, and at December 31, 2013, deferred compensation of $0.2 million was recorded in accrued expenses and other current liabilities.

LongTerm_Indebtedness

Long-Term Indebtedness	12 Months Ended
	Dec. 31, 2013
Long-Term Indebtedness [Abstract]	'
Long-Term Indebtedness	'
	9. LONG-TERM INDEBTEDNESS
	The Company had no debt outstanding at December 31, 2013 and 2012.
	The Company has a $50.0 million line of credit (the "Credit Agreement") with JPMorgan Chase Bank, N.A. and Wells Fargo Bank, N.A. (collectively, the "Lenders"). The maximum borrowings under the Company's line of credit can be increased by $20.0 million upon approval of the Lenders. Interest on borrowings under the line of credit is designated from time to time by the Company as either (i) the Prime Rate, but not less than 2.5 percent, plus additional interest up to 0.8 percent (0 percent at December 31, 2013 and 2012), or (ii) LIBOR plus additional interest ranging from 2.0 percent to 2.8 percent (2.0 percent at December 31, 2013 and 2012) depending on the Company's performance and financial condition. The Credit Agreement, which was scheduled to expire on January 1, 2016, was amended and extended on February 24, 2014, and now expires on January 1, 2019. In connection with this amendment, the line of credit was increased to $75.0 million. At December 31, 2013 and 2012, the Company had $2.2 million and $3.0 million, respectively in outstanding letters of credit under the line of credit. Availability under the Company's line of credit was $47.8 million at December 31, 2013.
	The Company also has a $150.0 million "shelf-loan" facility with Prudential Investment Management, Inc. and its affiliates ("Prudential"). The facility provides for Prudential to consider purchasing, at the Company's request, in one or a series of transactions, Senior Promissory Notes of the Company in the aggregate principal amount of up to $150.0 million, to mature no more than twelve years after the date of original issue of each Senior Promissory Note. Prudential has no obligation to purchase the Senior Promissory Notes. Interest payable on the Senior Promissory Notes will be at rates determined by Prudential within five business days after the Company issues a request to Prudential. At December 31, 2013 and 2012, there were no Senior Promissory Notes outstanding. This facility, which was scheduled to expire on February 24, 2014, was amended and extended on February 24, 2014, and now expires on February 24, 2017.
	Both the line of credit pursuant to the Credit Agreement and the "shelf-loan" facility are subject to a maximum leverage ratio covenant which limits the amount of consolidated outstanding indebtedness to 2.5 times the trailing twelve-month EBITDA, as defined. This limitation did not impact the Company's borrowing availability at December 31, 2013. The remaining availability under these facilities was $197.8 million at December 31, 2013. The Company believes the availability under the amended line of credit and "shelf-loan" facility, together with the $66.3 million in cash at December 31, 2013, is more than adequate to finance the Company's anticipated cash requirements for 2014.
	Pursuant to the Credit Agreement and "shelf-loan" facility, at December 31, 2013 and 2012 the Company was required to maintain minimum interest and fixed charge coverages, and to meet certain other financial requirements. At December 31, 2013 and 2012, the Company was in compliance with all such requirements, and expects to remain in compliance during 2014.
	Borrowings under both the line of credit and the "shelf-loan" facility are secured on a pari-passu basis by first priority liens on the capital stock or other equity interests of each of the Company's direct and indirect subsidiaries.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Income Taxes	'
	10. INCOME TAXES
	The provision for income taxes in the Consolidated Statements of Income was as follows for the years ended December 31:
	(In thousands)		2013		2012			2011
	Current:
	Federal	$	23,430	$	17,483		$	13,875
	State		4,129		3,647			3,501
	Total current provision	$	27,559	$	21,130		$	17,376
	Deferred:
	Federal		68		(298	)		590
	State		201		(370	)		231
	Total deferred provision	$	269	$	(668	)	$	821
	Provision for income taxes	$	27,828	$	20,462		$	18,197
	The provision for income taxes differs from the amount computed by applying the federal statutory rate to income before income taxes for the following reasons for the years ended December 31:
	(In thousands)		2013			2012			2011
	Income tax at federal statutory rate	$	27,281		$	20,231		$	16,889
	State income taxes, net of federal income
	tax impact		2,815			2,130			2,426
	Manufacturing credit pursuant to Jobs
	Creation Act		(1,444	)		(1,101	)		(828	)
	Other		(824	)		(798	)		(290	)
	Provision for income taxes	$	27,828		$	20,462		$	18,197
	At December 31, 2013, federal and state income taxes receivable of $3.7 million were included in prepaid expenses and other current assets. At December 31, 2012, federal income taxes receivable of $2.7 million were included in prepaid expenses and other current assets, and state income taxes payable of $0.2 million were included in accrued expenses and other current liabilities.
	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities were as follows at December 31:
	(In thousands)		2013			2012
	Deferred tax assets:
	Goodwill and other intangible assets	$	15,024		$	15,768
	Stock-based compensation		5,116			4,272
	Deferred compensation		3,722			2,713
	Warranty		3,477			2,423
	Inventory		3,245			3,248
	Other		4,048			2,911
	Total deferred tax assets		34,632			31,335
	Deferred tax liabilities:
	Fixed assets		(9,839	)		(6,269	)
	Net deferred tax assets	$	24,793		$	25,066
	The Company concluded it is more likely than not that the deferred tax assets at December 31, 2013 will be realized in the ordinary course of operations based on projected future taxable income and scheduling of deferred tax liabilities.
	Excess tax benefits on stock-based compensation of $1.5 million, $0.3 million and $0.2 million were credited directly to stockholders' equity during the years ended December 31, 2013, 2012 and 2011, respectively, relating to tax benefits which exceeded the compensation cost for stock-based compensation recognized in the Consolidated Financial Statements.
	In 2011, the Company reversed $2.5 million of deferred tax assets related to the expiration of vested stock options granted in prior years. This reversal was recorded as a reduction of stockholders' equity, against the pool of available excess tax benefits from prior exercises of stock-based compensation. At December 31, 2013, the remaining pool of excess tax benefits from prior exercises of stock-based compensation in stockholders' equity was $11.3 million.
	Unrecognized Tax Benefits
	The following table reconciles the total amounts of unrecognized tax benefits, at December 31:
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	1,701		$	2,185		$	2,213
	Changes in tax positions of prior years		(29	)		(297	)		(341	)
	Additions based on tax positions
	related to the current year		676			385			313
	Payments		(126	)		-			-
	Closure of tax years		(853	)		(572	)		-
	Balance at end of period	$	1,369		$	1,701		$	2,185
	In addition, the total amount of accrued interest and penalties related to taxes was $0.2 million, $0.4 million and $0.6 million at December 31, 2013, 2012 and 2011, respectively.
	The total amount of unrecognized tax benefits, net of federal income tax benefits, of $1.0 million, $1.2 million and $1.6 million at December 31, 2013, 2012 and 2011, respectively, would, if recognized, increase the Company's earnings, and lower the Company's annual effective tax rate in the year of recognition.
	The Company periodically undergoes examinations by the Internal Revenue Service ("IRS"), as well as various state taxing authorities. The IRS and other taxing authorities may challenge certain deductions and positions reported by the Company on its income tax returns. For federal income tax purposes, the tax years 2011 and 2012 remain subject to examination. For Indiana state income tax purposes, the tax years 2010 through 2012 remain subject to examination. Approximately 80 percent of the Company's operations are located in Indiana.
	The Company has assessed its risks associated with all tax return positions, and believes its tax reserve estimates reflect its best estimate of the deductions and positions it will be able to sustain, or it may be willing to concede as part of a settlement. At this time, the Company cannot estimate the range of reasonably possible change in its tax reserve estimates in 2014. While these tax matters could materially affect operating results when resolved in future periods, it is management's opinion that after final disposition, any monetary liability or financial impact to the Company beyond that provided for in the Consolidated Balance Sheet as of December 31, 2013, would not be material to the Company's financial position or annual results of operations.

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	11. COMMITMENTS AND CONTINGENCIES
	Leases
	The Company's lease commitments are primarily for real estate, machinery and equipment, and vehicles. The significant real estate leases provide for renewal options and require the Company to pay for property taxes and all other costs associated with the leased property.
	Future minimum lease payments under operating leases at December 31, 2013 are as follows (in thousands):
	2014	$	3,496
	2015		2,518
	2016		2,101
	2017		1,867
	2018		1,666
	Thereafter		3,605
	Total minimum lease payments	$	15,253
	In January 2014, the Company entered into a nine year operating lease with aggregate minimum lease payments of $6.1 million to consolidate manufacturing operations for efficiency improvements and expand capacity for its furniture and mattress operations.
	Rent expense for operating leases was $7.1 million, $5.6 million and $5.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Contingent Consideration
	In connection with several business acquisitions, if certain sales targets for the acquired products are achieved, the Company would pay additional cash consideration. The Company has recorded a liability for the fair value of this contingent consideration at December 31, 2013 and 2012, based on the present value of the expected future cash flows using a market participant's weighted average cost of capital of 15.5 percent and 14.9 percent, respectively.
	The following table summarizes the contingent consideration liability as of December 31, 2013:
				Fair Value of
			Estimated		Estimated
			Remaining		Remaining
	Acquisition (In thousands)		Payments		Payments
	Schwintek products	$	5,188	(a) $	3,871
	Level-Up® six-point leveling system		4,033	(b)	3,327
	Other acquired products		240	(c)	216
	Total	$	9,461	$	7,414
	(a)	The remaining contingent consideration for two of the three products expires in March 2014. Contingent consideration for the remaining product will cease five years after the product is first sold to customers. Two of the three products acquired have a combined remaining maximum contingent consideration of $4.4 million, of which the Company estimates $2.1 million will be paid. Other than expiration of the contingent consideration period, the remaining product has no maximum contingent consideration.
	(b)	Other than expiration of the contingent consideration period in February 2016, this product has no maximum contingent consideration.
	(c)	Contingent consideration expires at various dates through November 2025. Certain of these products have a combined remaining maximum contingent consideration of $3.1 million, while the remaining products have no maximum contingent consideration.
	As required, the liability for this contingent consideration is measured at fair value quarterly, considering actual sales of the acquired products, updated sales projections, and the updated market participant weighted average cost of capital. Depending upon the weighted average costs of capital and future sales of the products which are subject to contingent consideration, the Company could record adjustments in future periods.
	The following table provides a reconciliation of the Company's contingent consideration liability for the years ended December 31:
	(In thousands)		2013			2012			2011
	Beginning balance	$	11,519		$	14,561		$	12,104
	Acquisitions		-			67			1,090
	Payments		(5,456	)		(4,315	)		(398	)
	Accretion(a)		1,308			1,756			1,886
	Fair value adjustments(a)		43			(550	)		(121	)
	Total ending balance		7,414			11,519			14,561
	Less current portion in accrued expenses
	and other current liabilities		(3,462	)		(5,429	)		(3,292	)
	Total long-term portion in other long-term
	liabilities	$	3,952		$	6,090		$	11,269
	(a) Recorded in selling, general and administrative expense in the Consolidated Statements of Income.
	Litigation
	In the normal course of business, the Company is subject to proceedings, lawsuits and other claims. All such matters are subject to uncertainties and outcomes that are not predictable with assurance. While these matters could materially affect operating results when resolved in future periods, it is management's opinion after final disposition, including anticipated insurance recoveries in certain cases, any monetary liability or financial impact to the Company beyond that provided in the Consolidated Balance Sheet as of December 31, 2013, would not be material to the Company's financial position or annual results of operations.
	Executive Succession and Severance
	On May 10, 2013, Fredric M. Zinn retired as President and Chief Executive Officer of Drew. Jason D. Lippert, Chairman and Chief Executive Officer of Lippert Components, succeeded Mr. Zinn as Chief Executive Officer of Drew. Scott T. Mereness, President of Lippert Components, succeeded Mr. Zinn as President of Drew. In June 2013, the Company also relocated its corporate headquarters from White Plains, New York to Elkhart County, Indiana, the location of the corporate headquarters of Lippert Components.
	In connection with the Company's executive succession and corporate relocation, the Company recorded pre-tax charges of $1.5 million in the fourth quarter of 2012 and $1.9 million in the first six months of 2013, related to contractual obligations for severance and the acceleration of equity awards held by certain employees whose employment terminated as a result of the executive succession and relocation to Indiana. No charges were recorded in the second half of 2013, and no other related charges are expected. The liability for executive succession and severance obligations will be paid through 2015. During the third quarter of 2013, the transition and corporate office relocation were completed. As a result, the Company expects to save an estimated $2 million annually in general and administrative costs.
	Unrelated to the executive succession, the Company incurred severance and relocation costs of $0.5 million, $0.2 million, and $0.1 million during the years ended December 31, 2013, 2012 and 2011, respectively, which were recorded in selling, general and administrative expenses in the Consolidated Statements of Income.
	The liability for executive succession and severance obligations, which will be paid through 2015, was recorded as follows at December 31:
	(In thousands)		2013		2012		2011
	Other accrued expenses and current liabilities	$	1,064	$	1,778	$	449
	Other long-term liabilities		315		671		1,028
	Total executive succession and
	severance liability	$	1,379	$	2,449	$	1,477

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity [Abstract]	'
Stockholders' Equity	'
	12. STOCKHOLDERS' EQUITY
	Special Dividend
	On January 6, 2014, a special dividend of $2.00 per share of the Company's Common Stock, representing an aggregate of $46.7 million, was paid to stockholders of record as of December 20, 2013. On December 20, 2012, a special dividend of $2.00 per share of the Company's Common Stock, representing an aggregate of $45.0 million, was paid to stockholders of record as of December 10, 2012. In connection with these special dividends, holders of deferred stock units, restricted stock and stock awards were credited with deferred stock units, restricted stock or stock equal to $2.00 per deferred stock unit, restricted stock or stock, representing $1.4 million in total for each special dividend. In connection with these special cash dividends, the exercise price of all outstanding stock options was reduced by $2.00 per share. These reductions in exercise price were made pursuant to the terms of the outstanding awards, resulting in no incremental stock-based compensation expense.
	Stock-Based Awards
	Pursuant to the Drew Industries Incorporated Equity Award and Incentive Plan, as Amended and Restated (the "Equity Plan"), which was approved by stockholders in May 2011, the Company may grant to its directors, employees, and other eligible persons Common Stock-based awards, such as stock options, restricted stock and deferred stock units. All such awards granted under the Equity Plan must be approved by the Compensation Committee of Drew's Board of Directors (the "Committee"). The Committee determines the period for which all such awards may be exercisable, but in no event may such an award be exercisable more than 10 years from the date of grant. The number of shares available under the Equity Plan, and the exercise price of all such awards granted under the Equity Plan, are subject to adjustments by the Committee to reflect stock splits, dividends, recapitalization, mergers, or other major corporate actions. The number of shares available for granting awards was 246,368, 688,712 and 1,361,718 at December 31, 2013, 2012 and 2011, respectively.
	Stock-based compensation resulted in charges to operations as follows for the years ended December 31:
	(In thousands)		2013		2012		2011
	Stock options	$	2,325	$	2,836	$	3,218
	Deferred stock units		5,425		1,888		1,264
	Restricted stock		911		849		105
	Stock awards		2,178		745		-
	Stock-based compensation expense	$	10,839	$	6,318	$	4,587
	Stock-based compensation expense is recorded in the Consolidated Statements of Income in the same line that cash compensation to those employees is recorded, primarily in selling, general and administrative expenses.
	In addition, for the years ended December 31, 2013, 2012 and 2011, the Company issued deferred stock units to certain executive officers in lieu of cash for a portion of prior year incentive compensation, in accordance with their compensation arrangements, of $0.1 million, $0.2 million and $1.1 million, respectively. In February 2014, the Company issued 43,188 deferred stock units at $45.98 per share, or $2.0 million, to certain officers in lieu of cash for a portion of their 2013 salary and incentive compensation in accordance with their compensation arrangements.
	The fair value of each stock option grant was estimated on the date of the grant using the Black-Scholes option-pricing model with the following weighted average assumptions:
			2011
	Risk-free interest rate		0.71	%
	Expected volatility		55.2	%
	Expected life		4.1 years
	Contractual life		6.0 years
	Dividend yield		N/A
	Fair value of stock options granted	$	10.02
	The fair value of deferred stock units, restricted stock and stock grants was the market price of the Company's Common Stock on the grant date.
	Stock Options
	The Equity Plan provides for the grant of stock options that qualify as incentive stock options under Section 422 of the Internal Revenue Code, and non-qualified stock options. The exercise price for stock options granted under the Equity Plan must be at least equal to 100 percent of the fair market value of the shares subject to such stock option on the date of grant. The exercise price may be paid in cash or in shares of the Company's Common Stock which have been held for a minimum of six months. Historically, upon exercise of stock options, new shares have been issued instead of using treasury shares.
	Outstanding stock options expire six years from the date of grant, and either vest ratably over the service period of five years for employees or, for certain executive officers, based on achievement of specified performance conditions. As a result of the Company's executive succession and corporate relocation, the vesting of certain stock options was accelerated pursuant to contractual obligations with certain employees whose employment terminated as a result of the relocation to Indiana.
	Transactions in stock options under the Equity Plan are summarized as follows:
							Weighted
		Number of			Stock Option		Average
		Option Shares			Exercise Price		Exercise Price
	Outstanding at December 31, 2010	1,996,490		$	10.09- $31.11	$	21.7
	Granted	345,000		$	23.17	$	23.17
	Exercised	(87,300	)	$	10.09- $19.67	$	11.39
	Forfeited	(100,900	)	$	10.09- $31.11	$	22.37
	Expired	(342,640	)	$	26.83- $27.21	$	26.87
	Outstanding at December 31, 2011	1,810,650		$	10.09- $31.11	$	21.46
	Exercised	(422,131	)	$	8.09- $31.11	$	19.13
	Forfeited	(67,700	)	$	10.09- $31.11	$	22.61
	Reduction for cash dividend	-		$	8.09- $29.11	$	(2.00	)
	Outstanding at December 31, 2012	1,320,819		$	8.09- $29.11	$	19.92
	Exercised	(574,288	)	$	8.09- $29.11	$	23.04
	Forfeited	(22,870	)	$	8.09- $29.11	$	19.36
	Reduction for cash dividend	-		$	6.09- $19.17	$	(2.00	)
	Outstanding at December 31, 2013	723,661		$	6.09- $19.17	$	15.46
	Exercisable at December 31, 2013	388,521		$	6.09- $19.17	$	13.64
	In 2013 and 2012, the Company granted deferred stock units in lieu of stock options.
	Additional information for the exercise of stock options is as follows for the years ended December 31:
	(In thousands)		2013		2012		2011
	Intrinsic value of stock options exercised	$	9,062	$	4,838	$	1,079
	Cash receipts from stock options exercised	$	13,231	$	8,075	$	997
	Income tax benefits from stock option
	exercises	$	3,473	$	1,852	$	422
	Grant date fair value of stock options vested $		2,252	$	2,814	$	3,207
	The following table summarizes information about stock options outstanding at December 31, 2013:
			Option		Remaining	Option
		Exercise	Shares		Life	Shares
		Price	Outstanding		in Years	Exercisable
	$	6.09	70,200		0.9	70,200
	$	7.53	400		0.9	400
	$	8.72	37,500		1	37,500
	$	15.49	131,181		1.9	94,281
	$	15.67	252,700		2.9	139,100
	$	19.17	231,680		3.9	47,040
	Total Shares	723,661	(a)		388,521	(a)
(a) The aggregate intrinsic value for option shares outstanding and option shares exercisable is $25.9 million and $14.6 million, respectively. The weighted average remaining term for option shares outstanding and option shares exercisable is 2.7 years and 2.2 years, respectively. Recorded in selling, general and administrative expense in the Consolidated Statements of Operations.
As of December 31, 2013, there was $2.7 million of total unrecognized compensation costs related to unvested stock options, which are expected to be recognized over a weighted average remaining period of 2.4 years.
Deferred Stock Units
The Equity Plan provides for the grant or issuance of deferred stock units ("DSUs") to directors, employees and other eligible persons. Recipients of DSUs are entitled to receive shares at the end of a specified deferral period. Holders of DSUs receive dividends granted to holders of the Common Stock, payable in additional DSUs, and are subject to the same vesting criteria as the original grant.
DSUs vest (i) ratably over the service period, (ii) at a specified future date, or (iii) for certain officers, based on achievement of specified performance conditions. As a result of the Company's executive succession and corporate relocation, the vesting of certain deferred stock units was accelerated pursuant to contractual obligations with certain employees whose employment terminated as a result of the relocation to Indiana. In addition, DSUs are issued in lieu of cash compensation.
Transactions in DSUs under the Equity Plan are summarized as follows:
	Number of
	Shares			Stock Price
Outstanding at December 31, 2010	266,216		$	5.50- $40.68
Issued	79,714		$	18.67- $25.48
Granted	53,450		$	23.17
Forfeited	(2,660	)	$	20.89- $23.49
Exercised	(27,587	)	$	6.16- $25.06
Outstanding at December 31, 2011	369,133		$	5.50- $40.68
Issued	23,713		$	24.53- $32.07
Granted	282,925		$	26.54- $30.50
Dividend equivalents	34,568		$	33.32
Exercised	(96,585	)	$	5.50- $40.68
Outstanding at December 31, 2012	613,754		$	6.16- $33.32
Issued	32,462		$	33.84- $48.53
Granted	140,461		$	36.58- $50.85
Forfeited	(4,505	)	$	30.5
Exercised	(89,211	)	$	20.20- $30.65
Outstanding at December 31, 2013	692,961		$	6.16- $50.85
As of December 31, 2013, there was $8.9 million of total unrecognized compensation costs related to DSUs, which is expected to be recognized over a weighted average remaining period of 2.3 years.
Restricted Stock
The Equity Plan provides for the grant of restricted stock to directors, employees and other eligible persons. The restriction period is established by the Committee, but may not be less than one year. Holders of restricted stock have all the rights of a stockholder of the Company, including the right to vote and the right to receive dividends granted to holders of the Common Stock, payable in additional shares of restricted stock, and subject to the same vesting criteria as the original grant. All shares of restricted stock are not transferable during the restriction period, which lapses one year from the date of grant. Restricted stock grants, which were all made to directors, were as follows (in thousands except share and per share amounts):
		2013		2012		2011
Granted		17,885		29,841		36,260
Stock price	$	50.89	$	30.5	$	23.17
Fair value of stock granted	$	910	$	910	$	840
As of December 31, 2013, there was $0.8 million of total unrecognized compensation costs related to restricted stock, which is expected to be recognized over a weighted average remaining period of 0.9 years.
Stock Awards
In accordance with the Executive Employment and Non-Competition Agreements for 2012 – 2014 with two of the Company's named executive officers, they are entitled to receive an annual long-term award consisting of the right to earn an aggregate of 85,000 shares of Common Stock. In accordance with compensation arrangements for 2013 – 2014 with certain other officers of the Company, they are entitled to receive an annual long-term award consisting of the right to earn an aggregate of 18,500 shares of the Common Stock. All of these shares are earned during the subsequent three year period based on growth in the Company's earnings per diluted share over that same three year period. As of December 31, 2013, there was $2.9 million of total unrecognized compensation costs related to outstanding stock awards, which is expected to be recognized over a weighted average remaining period of 1.8 years. The grant date fair value of the January 1, 2014 awards was $5.2 million.
Weighted Average Common Shares Outstanding
The following reconciliation details the denominator used in the computation of basic and diluted earnings per share for the years ended December 31:
(In thousands)	2013	2012	2011
Weighted average shares outstanding
for basic earnings per share	23,321	22,558	22,267
Common stock equivalents pertaining
to stock options and deferred
stock units	432	270	177
Weighted average shares outstanding
for diluted earnings per share	23,753	22,828	22,444
The weighted average diluted shares outstanding for the years ended December 31, 2013, 2012 and 2011, exclude the effect of 303,240, 426,788 and 1,311,330 shares of common stock, respectively, subject to stock options and deferred stock units. Such shares were excluded from total diluted shares because they were anti-dilutive or the specified performance conditions those shares were subject to were not yet achieved.
Treasury Stock
In 2007, the Board of Directors authorized the Company to repurchase up to 1 million shares of the Company's Common Stock from time to time in the open market, in privately negotiated transactions, or in block trades. The number of shares ultimately repurchased, and the timing of the purchases, will depend upon market conditions, share price and other factors. Treasury stock transactions under this authorization were as follows (in thousands except share and per share amounts):
			Weighted
			Average Price
	Shares		Per Share		Cost
Purchases through 2010	501,279	$	18.7	$	9,374
Purchases in 2011	33,856	$	18.44	$	626
Total purchases	535,135	$	18.64	$	10,000

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	13. FAIR VALUE MEASUREMENTS
	Recurring
	The following table presents the Company's assets and liabilities that were measured at fair value on a recurring basis at December 31:
						2013								2012
	(In thousands)			Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	Assets
	Deferred compensation		$	6,535	$	6,535	$	-	$	-	$	4,540	$	4,540	$	-	$	-
	Derivative instruments			-		-		-		-		223		-		223		-
	Total assets		$	6,535	$	6,535	$	-	$	-	$	4,763	$	4,540	$	223	$	-
	Liabilities
	Contingent consideration $			7,414	$	-	$	-	$	7,414	$	11,519	$	-	$	-	$	11,519
	Deferred compensation			9,673		9,673		-		-		7,015		7,015		-		-
	Total liabilities	$	17,087		$	9,673	$	-	$	7,414	$	18,534	$	7,015	$	-	$	11,519
	Deferred Compensation
	The Company has an Executive Non-Qualified Deferred Compensation Plan (the "Plan"). The amounts deferred under the Plan are credited with earnings or losses based upon changes in values of the notional investments elected by the Plan participants. The Company invests 65 percent of the amounts deferred by the Plan participants in life insurance contracts, matching the investments elected by the Plan participants. Deferred compensation assets and liabilities were valued using a market approach based on the quoted market prices of identical instruments. For further information on deferred compensation, see Note 8 of the Notes to Consolidated Financial Statements.
	Contingent Consideration Related to Acquisitions
	Liabilities for contingent consideration related to acquisitions were valued using management's projections for long-term sales forecasts, including assumptions regarding market share gains and future industry-specific economic and market conditions, and a market participant's weighted average cost of capital. Over the next three years, the Company's long-term sales growth forecasts for products subject to contingent consideration arrangements average approximately 25 percent per year. For further information on the inputs used in determining the fair value, and a roll-forward of the contingent consideration liability, see Note 11 of the Notes to Consolidated Financial Statements.
	Changes in either of the inputs in isolation would result in a change in the fair value measurement. A change in the assumptions used for sales forecasts would result in a directionally similar change in the fair value liability, while a change in the weighted average cost of capital would result in a directionally opposite change in the fair value liability. If there is an increase in the fair value liability, the Company would record a charge to selling, general and administrative expenses, and if there is a decrease in the fair value liability, the Company would record a benefit in selling, general and administrative expenses.
	Derivative Instruments
	At December 31, 2013, the Company had no derivative instruments outstanding. While outstanding, these derivative instruments were considered to be economic hedges of the underlying movement in the price of aluminum, but were not designated or accounted for as a hedge. These derivative instruments were valued at fair value using a market approach based on the quoted market prices of similar instruments at the end of each reporting period, and the resulting net gain or loss was recorded in cost of sales in the Consolidated Statements of Income. At December 31, 2012, the $0.2 million corresponding asset was recorded in prepaid expenses and other current assets in the Consolidated Balance Sheets. During 2013, derivative instruments for 4.7 million pounds of aluminum were settled at a loss of $0.3 million, which was recorded in cost of sales in the Consolidated Statements of Income.
	Non-recurring
	The following table presents the carrying value on the measurement date of any assets and liabilities which were measured at fair value and recorded at the lower of cost or fair value, on a non-recurring basis, using significant unobservable inputs (Level 3), and the corresponding non-recurring losses recognized during the years ended December 31:
					2013				2012				2011
			Carrying		Non-Recurring		Carrying		Non-Recurring		Carrying		Non-Recurring
	(In thousands)		Value		Losses		Value		Losses		Value		Losses
	Assets
	Vacant owned facilities	$	3,197	$	145	$	5,009	$	523	$	10,031	$	-
	Other intangible assets		-		-		-		1,228		-		-
	Net assets of acquired
	businesses		4,382		-		1,345		-		38,389		-
	Total assets	$	7,579	$	145	$	6,354	$	1,751	$	48,420	$	-
	Liabilities
	Vacant leased facilities	$	-	$	-	$	-	$	50	$	399	$	203
	Total liabilities	$	-	$	-	$	-	$	50	$	399	$	203
	Vacant Owned Facilities
	During 2013, 2012 and 2011, the Company reviewed the recoverability of the carrying value of its vacant owned facilities. The determination of fair value was based on the best information available, including internal cash flow estimates, market prices for similar assets, broker quotes and independent appraisals, as appropriate.
	During 2013, the fair value of two vacant owned facilities did not exceed its carrying value; therefore an impairment charge of $0.1 million was recorded in selling, general and administrative expenses in the Consolidated Statements of Income. A sale agreement has been signed on one facility, with closing scheduled for the first quarter of 2014. During 2013, the Company sold one of the facilities previously recorded as a vacant facility and reopened two facilities. At December 31, 2013, the Company had three vacant owned facilities, with an estimated combined fair value of $3.6 million and a combined carrying value of $3.2 million, including the one scheduled for closing in the first quarter of 2014, classified in fixed assets in the Consolidated Balance Sheets.
	During 2012, the carrying value of five vacant owned facilities exceeded their fair value; therefore an impairment charge of $0.5 million was recorded. During 2012, the Company sold at a gain of $0.8 million two of the facilities previously recorded as vacant facilities and reopened another. At December 31, 2012, the Company had four vacant owned facilities, with a combined carrying value of $5.0 million, classified in fixed assets in the Consolidated Balance Sheets.
	During 2011, the fair value of six vacant owned facilities exceeded their carrying value; therefore no impairment charges were recorded. At December 31, 2011, the Company had six vacant owned facilities with a combined carrying value of $10.0 million, classified in fixed assets in the Consolidated Balance Sheets.
	Other Intangible Assets
	During 2012, the Company reviewed the recoverability of amortizable intangible assets associated with an acquired patent. Based on the analyses, the $1.2 million carrying value of these intangible assets exceeded the undiscounted cash flows expected to be generated. As a result, the Company was required to determine the fair value of these intangible assets. Fair value was determined based on the present value of internal cash flow estimates. The resulting fair value of these intangible assets was nominal, therefore the Company recorded a non-cash impairment charge of $1.2 million, of which $1.0 million was recorded in cost of sales in the Consolidated Statements of Income.
	Net Assets of Acquired Businesses
	The Company valued the assets and liabilities associated with the acquisitions of businesses on the respective acquisition dates. Depending upon the type of asset or liability acquired, the Company used different valuation techniques in determining the fair value. Those techniques included comparable market prices, long-term sales, profitability and cash flow forecasts, assumptions regarding future industry-specific economic and market conditions, a market participant's weighted average cost of capital, as well as other techniques as circumstances required. For further information on acquired assets and liabilities, see Note 3 of the Notes to Consolidated Financial Statements.
	Vacant Leased Facilities
	The Company recorded charges of $0.1 million and $0.2 million for the years ended December 31, 2012 and 2011, respectively, in selling, general and administrative expenses in the Consolidated Statements of Income related to the exit from leased facilities.

Quarterly_Results_Of_Operation

Quarterly Results Of Operations	12 Months Ended
	Dec. 31, 2013
Quarterly Results Of Operations [Abstract]	'
Quarterly Results Of Operations	'
	14. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)
	Interim unaudited financial information follows:
			First		Second		Third		Fourth
	(In thousands, except per share amounts)		Quarter		Quarter		Quarter		Quarter		Year
	Year ended December 31, 2013
	Net sales	$	252,586	$	287,192	$	250,851	$	224,947	$	1,015,576
	Gross profit	$	47,591	$	61,433	$	56,126	$	47,959	$	213,109
	Income before income taxes	$	13,470	$	25,623	$	22,754	$	16,100	$	77,947
	Net income	$	8,372	$	15,865	$	14,805	$	11,077	$	50,119
	Net income per common share:
	Basic	$	0.36	$	0.68	$	0.63	$	0.47	$	2.15
	Diluted	$	0.36	$	0.67	$	0.62	$	0.46	$	2.11
	Stock market price:
	High	$	38.67	$	41.25	$	45.54	$	54.21	$	54.21
	Low	$	33.34	$	34.13	$	39.6	$	45.86	$	33.34
	Close (at end of quarter)	$	36.31	$	39.32	$	45.54	$	51.2	$	51.2
	Year ended December 31, 2012
	Net sales	$	223,552	$	251,014	$	226,323	$	200,234	$	901,123
	Gross profit	$	44,823	$	46,423	$	41,542	$	35,871	$	168,659
	Income before income taxes	$	17,299	$	18,912	$	14,832	$	6,759	$	57,802
	Net income	$	11,116	$	11,708	$	9,771	$	4,745	$	37,340
	Net income per common share:
	Basic	$	0.5	$	0.52	$	0.43	$	0.21	$	1.66
	Diluted	$	0.49	$	0.52	$	0.43	$	0.21	$	1.64
	Stock market price:
	High	$	29.84	$	30.02	$	30.86	$	33.32	$	33.32
	Low	$	24.67	$	25.83	$	25.82	$	29.48	$	24.67
	Close (at end of quarter)	$	27.31	$	27.85	$	30.21	$	32.25	$	32.25
	The sum of per share amounts for the four quarters may not equal the total per share amounts for the year as a result of changes in the weighted average common shares outstanding or rounding.

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Basis Of Presentation	'
	Basis of Presentation
	The Consolidated Financial Statements include the accounts of Drew Industries Incorporated and its wholly-owned subsidiaries (collectively, "Drew" or the "Company"). Drew has no unconsolidated subsidiaries. Drew operates through its wholly-owned subsidiary, Lippert Components, Inc. and its subsidiaries (collectively, "Lippert Components"). Effective December 2013, the Company completed the tax-free reorganization of Kinro, Inc. and its subsidiaries with and into Lippert Components. Drew, through Lippert Components, manufactures a broad array of components for recreational vehicles ("RVs") and manufactured homes, and to a lesser extent manufactures components for modular housing, truck caps and buses, as well as for trailers used to haul boats, livestock, equipment and other cargo. At December 31, 2013, the Company operated 31 manufacturing facilities in 11 states.
	Because of fluctuations in dealer inventories, and the impact of international, national and regional economic conditions and consumer confidence on retail sales of RVs and other products for which we sell our components, current and future seasonal industry trends may be different than in prior years.
	The Company is not aware of any significant events, except as disclosed in the Notes to Consolidated Financial Statements, which occurred subsequent to the balance sheet date but prior to the filing of this report that would have a material impact on the Consolidated Financial Statements.
	All significant intercompany balances and transactions have been eliminated. Certain prior year balances have been reclassified to conform to current year presentation.
Cash And Cash Equivalents	'
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with a maturity of three months or less at the time of purchase to be cash equivalents.
Accounts Receivable	'
	Accounts Receivable
	Accounts receivable are stated at historical carrying value, net of write-offs and allowances. The Company establishes allowances based upon historical experience and any specific customer collection issues identified by the Company. Uncollectible accounts receivable are written off when a settlement is reached or when the Company has determined the balance will not be collected.
Inventories	'
	Inventories
	Inventories are stated at the lower of cost (using the first-in, first-out method) or market. Cost includes material, labor and overhead; market is replacement cost or realizable value after allowance for costs of distribution.
Fixed Assets	'
	Fixed Assets
	Fixed assets which are owned are stated at cost less accumulated depreciation, and are depreciated on a straight-line basis over the estimated useful lives of the properties and equipment. Leasehold improvements and leased equipment are amortized over the shorter of the lives of the leases or the underlying assets. Maintenance and repair costs that do not improve service potential or extend economic life are expensed as incurred; significant improvements are capitalized.
Income Taxes	'
	Income Taxes
	Deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities, applying enacted statutory tax rates in effect for the year in which the differences are expected to reverse.
	The Company accounts for uncertainty in tax positions by recognizing in its financial statements the impact of a tax position only if that position is more likely than not of being sustained on audit, based on the technical merits of the position. Further, the Company assesses the tax benefits of the tax positions in its financial statements based on experience with similar tax positions, information obtained during the examination process and the advice of experts. The Company recognizes previously unrecognized tax benefits upon the earlier of the expiration of the period to assess tax in the applicable taxing jurisdiction or when the matter is constructively settled and upon changes in statutes or regulations and new case law or rulings.
	The Company classifies interest and penalties related to income taxes as income tax expense in its Consolidated Financial Statements.
Goodwill	'
	Goodwill
	Goodwill represents the excess of the total consideration given in an acquisition of a business over the fair value of the net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but instead is tested at the reporting unit level for impairment annually in November, or more frequently if certain circumstances indicate a possible impairment may exist. In 2013, the Company assessed qualitative factors of its reporting units to determine whether it was more likely than not the fair value of the reporting unit was less than its carrying amount, including goodwill. The qualitative impairment test consists of an assessment of qualitative factors, including general economic and industry conditions, market share and input costs. In 2012 and 2011, the impairment tests were based on fair value, determined using discounted cash flows, appraised values or management's estimates.
Other Intangible Assets	'
	Other Intangible Assets
	Intangible assets with estimable useful lives are amortized over their respective estimated useful lives to their estimated residual values, and reviewed for impairment. The amortization of other intangible assets is done using a method, straight-line or accelerated, which best reflects the pattern in which the estimated future economic benefits of the asset will be consumed.
Impairment Of Long-Lived Assets	'
	Impairment of Long-Lived Assets
	Long-lived assets, other than goodwill, are tested for impairment when changes in circumstances indicate their carrying value may not be recoverable. A determination of impairment, if any, is made based on the undiscounted value of estimated future cash flows, salvage value or expected net sales proceeds, depending on the circumstances. Impairment is measured as the excess of the carrying value over the estimated fair value of such assets.
Asset Retirement Obligations	'
	Asset Retirement Obligations
	Asset retirement obligations are legal obligations associated with the retirement of long-lived assets. The Company records asset retirement obligations on certain of its owned and leased facilities and leased machinery and equipment. These liabilities are initially recorded at fair value and are adjusted for changes resulting from revisions to the timing or the amount of the original estimate.
Environmental Liabilities	'
	Environmental Liabilities
	Accruals for environmental matters are recorded when it is probable a liability has been incurred and the amount of the liability can be reasonably estimated, based upon current law and existing technologies. These amounts, which are not discounted and are exclusive of claims against potentially responsible third parties, are adjusted periodically as assessment and remediation efforts progress or additional technical or legal information becomes available. Environmental exposures are difficult to assess for numerous reasons, including the identification of new sites, developments at sites resulting from investigatory studies and remedial activities, advances in technology, changes in environmental laws and regulations and their application, the scarcity of reliable data pertaining to identified sites, the difficulty in assessing the involvement and financial capability of other potentially responsible parties and the Company's ability to obtain contributions from other parties, and the lengthy time periods over which site remediation occurs. It is possible some of these matters (the outcomes of which are subject to various uncertainties) may be resolved unfavorably against the Company, and could materially affect operating results when resolved in future periods.
Financial Instruments	'
	Financial Instruments
	The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximated their fair value due to the short-term nature of these instruments.
Stock-Based Compensation	'
	Stock-Based Compensation
	All stock-based compensation awards are expensed over their vesting period, based on fair value. For awards that have a service only vesting condition, the Company recognizes stock-based compensation expense on a straight-line basis over the requisite service periods. For awards with a performance vesting condition, which are subject to certain pre-established performance targets, the Company recognizes stock-based compensation expense on a graded-vesting basis to the extent it is probable the performance targets will be met. The fair value for stock options is determined using the Black-Scholes option-pricing model, while the fair values of deferred stock units and restricted stock are based on the market price of the Company's Common Stock, all on the date the stock-based awards are granted.
Revenue Recognition	'
	Revenue Recognition
	The Company recognizes revenue when products are shipped and the customer takes ownership and assumes risk of loss, collectability is reasonably assured, and the sales price is fixed or determinable. Sales taxes collected from customers and remitted to governmental authorities, which are not significant, are accounted for on a net basis and therefore are excluded from net sales in the Consolidated Statements of Income.
Shipping And Handling Costs	'
	Shipping and Handling Costs
	The Company records shipping and handling costs within selling, general and administrative expenses. Such costs aggregated $36.4 million, $32.7 million and $24.6 million in the years ended December 31, 2013, 2012 and 2011, respectively.
Legal Costs	'
	Legal Costs
	The Company expenses all legal costs associated with litigation as incurred. Legal expenses are included in selling, general and administrative expenses in the Consolidated Statements of Income.
Fair Value Measurements	'
	Fair Value Measurements
	Fair value is determined using a hierarchy that has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant unobservable inputs.
Use Of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make estimates and judgments that affect the reported amounts of assets, liabilities, net sales and expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, the Company evaluates its estimates, including, but not limited to, those related to product returns, sales and purchase rebates, accounts receivable, inventories, goodwill and other intangible assets, income taxes, warranty obligations, self-insurance obligations, lease terminations, asset retirement obligations, long-lived assets, executive succession, post-retirement benefits, stock-based compensation, segment allocations, contingent consideration, environmental liabilities, contingencies and litigation. The Company bases its estimates on historical experience, other available information and various other assumptions believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other resources. Actual results and events could differ significantly from management estimates.

Segment_Reporting_Tables

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule Of Information Relating To Segments	'
					Segments				Corporate
	(In thousands)		RV		MH		Total		and Other			Total
	2013
	Net sales to external customers(a)	$	893,694	$	121,882	$	1,015,576	$	-		$	1,015,576
	Operating profit (loss)(b)	$	68,248	$	11,926	$	80,174	$	(1,876	)	$	78,298
	Total assets(c)	$	306,139	$	32,948	$	339,087	$	114,097		$	453,184
	Expenditures for long-lived assets(d)	$	34,989	$	2,682	$	37,671	$	-		$	37,671
	Depreciation and amortization	$	24,615	$	2,806	$	27,421	$	79		$	27,500
	2012
	Net sales to external customers(a)	$	780,925	$	120,198	$	901,123	$	-		$	901,123
	Operating profit (loss)(b)	$	47,172	$	12,416	$	59,588	$	(1,456	)	$	58,132
	Total assets(c)	$	281,728	$	35,668	$	317,396	$	56,472		$	373,868
	Expenditures for long-lived assets(d)	$	30,893	$	2,739	$	33,632	$	-		$	33,632
	Depreciation and amortization	$	22,750	$	2,822	$	25,572	$	93		$	25,665
	2011
	Net sales to external customers(a)	$	570,643	$	110,523	$	681,166	$	-		$	681,166
	Operating profit(b)	$	37,715	$	10,833	$	48,548	$	-		$	48,548
	Total assets(c)	$	268,395	$	40,737	$	309,132	$	41,951		$	351,083
	Expenditures for long-lived assets(d)	$	66,931	$	3,378	$	70,309	$	103		$	70,412
	Depreciation and amortization	$	17,593	$	2,834	$	20,427	$	95		$	20,522
	(a) Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.
	(b) Certain general and administrative expenses are allocated between the segments based upon net sales or operating profit, depending upon the nature of the expense.
	(c) Segment assets include accounts receivable, inventories, fixed assets, goodwill and other intangible assets. Corporate and other assets include cash and cash equivalents, prepaid expenses and other current assets, deferred taxes, and other assets.
	(d) Expenditures for long-lived assets include capital expenditures, as well as fixed assets, goodwill and other intangible assets purchased as part of the acquisition of businesses. The Company purchased $4.8 million, $1.5 million and $45.2 million of long-lived assets, as part of the acquisitions of businesses in the years ended December 31, 2013, 2012 and 2011, respectively.
Schedule Of Net Sales By Product	'
	(In thousands)		2013		2012		2011
	RV Segment:
	Chassis, chassis parts and
	slide-out mechanisms	$	493,244	$	443,850	$	316,580
	Windows, doors and screens		181,934		173,436		126,130
	Furniture and mattresses		100,196		78,082		67,088
	Axles and suspension solutions		69,818		57,275		43,669
	Other		48,502		28,282		17,176
	Total RV Segment net sales	$	893,694	$	780,925	$	570,643
	MH Segment:
	Windows, doors and screens	$	67,029	$	63,655	$	58,377
	Chassis and chassis parts		38,359		41,874		38,754
	Other		16,494		14,669		13,392
	Total MH Segment net sales	$	121,882	$	120,198	$	110,523
	Total net sales	$	1,015,576	$	901,123	$	681,166
Schedule Of Net Sales By Segment	'
	(In thousands)		2013		2012		2011
	Net sales:
	RV Segment:
	RV OEMs
	Travel trailers and fifth-wheels	$	727,783	$	653,478	$	497,544
	Motorhomes		47,937		34,612		17,492
	RV aftermarket		25,334		19,119		14,660
	Adjacent industries		92,640		73,716		40,947
	Total RV Segment net sales	$	893,694	$	780,925	$	570,643
	MH Segment:
	Manufactured housing OEMs	$	80,245	$	80,392	$	77,087
	Manufactured housing aftermarket		13,719		13,110		13,073
	Adjacent industries		27,918		26,696		20,363
	Total MH Segment net sales	$	121,882	$	120,198	$	110,523
	Total net sales	$	1,015,576	$	901,123	$	681,166

Acquisitions_Goodwill_And_Othe1

Acquisitions, Goodwill And Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Business Acquisition [Line Items]	'
Schedule Of Goodwill By Reportable Segment	'
	(In thousands)		RV Segment			MH Segment			Total
	Accumulated cost	$	48,773		$	9,251		$	58,024
	Accumulated impairment		(41,276	)		(9,251	)		(50,527	)
	Net balance – December 31, 2010		7,497			-			7,497
	Acquisitions – 2011		12,228			774			13,002
	Net balance – December 31, 2011		19,725			774			20,499
	Acquisitions – 2012		678			-			678
	Net balance – December 31, 2012		20,403			774			21,177
	Acquisitions – 2013		368			-			368
	Net balance – December 31, 2013	$	20,771		$	774		$	21,545
	Accumulated cost	$	62,047		$	10,025		$	72,072
	Accumulated impairment		(41,276	)		(9,251	)		(50,527	)
	Net balance – December 31, 2013	$	20,771		$	774		$	21,545
Schedule Of Other Intangible Assets By Segment	'
	(In thousands)		2013		2012
	RV Segment	$	56,954	$	66,191
	MH Segment		2,438		3,027
	Other intangible assets	$	59,392	$	69,218
Schedule Of Other Intangible Assets	'
			Gross		Accumulated		Net	Estimated Useful
	(In thousands)		Cost		Amortization		Balance	Life in Years
	Customer relationships	$	50,105	$	21,999	$	28,106		6 to 16
	Patents		41,651		18,461		23,190		3 to 19
	Tradenames		7,959		5,976		1,983		5 to 15
	Non-compete agreements		3,866		2,210		1,656		3 to 6
	Purchased research and
	development		4,457		-		4,457	Indefinite
	Other intangible assets	$	108,038	$	48,646	$	59,392
	Other intangible assets consisted of the following at December 31, 2012:
			Gross		Accumulated		Net	Estimated Useful
	(In thousands)		Cost		Amortization		Balance	Life in Years
	Customer relationships	$	50,105	$	17,857	$	32,248		3 to 16
	Patents		41,507		14,850		26,657		2 to 19
	Tradenames		7,959		4,525		3,434		5 to 15
	Non-compete agreements		4,989		2,567		2,422		1 to 7
	Purchased research and
	development		4,457		-		4,457	Indefinite
	Other intangible assets	$	109,017	$	39,799	$	69,218
Schedule Of Amortization Expense Of Other Intangible Assets	'
	(In thousands)		2013		2012		2011
	Cost of sales	$	3,610	$	4,492	$	3,393
	Selling, general and administrative expenses		6,398		6,760		4,958
	Amortization expense	$	10,008	$	11,252	$	8,351
Schedule Of Estimated Amortization Expense	'
	(In thousands)		2014		2015		2016		2017		2018
	Cost of sales	$	3,890	$	4,028	$	4,175	$	3,816	$	3,081
	Selling, general and
	administrative expense	$	5,217	$	4,566	$	3,696	$	3,331	$	3,037
	Amortization expense	$	9,107	$	8,594	$	7,871	$	7,147	$	6,118
Fortress Technologies, LLC [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	3,299
	Working capital, net	$	(111	)
	Net tangible assets		3,410
	Total fair value of net assets acquired	$	3,299
Midstates Tool & Die And Engineering Inc. [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	1,451
	Working capital, net	$	20
	Non-compete agreement		40
	Net tangible assets		1,023
	Total fair value of net assets acquired	$	1,083
	Goodwill (tax deductible)	$	368
Euramax International, Inc - RV Entry Door Operation [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	1,164
	Present value of future payments		482
	Total fair value of consideration given	$	1,646
	Customer relationships	$	270
	Other identifiable intangible assets		40
	Net tangible assets		785
	Total fair value of net assets acquired	$	1,095
	Goodwill (tax deductible)	$	551
M&M Fabricators [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	961
	Contingent consideration		450
	Total fair value of consideration given	$	1,411
	Customer relationships	$	330
	Net tangible assets		820
	Total fair value of net assets acquired	$	1,150
	Goodwill (tax deductible)	$	261
Starquest Products, LLC [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	22,600
	Contingent consideration		40
	Total fair value of consideration given	$	22,640
	Customer relationships	$	12,540
	Other identifiable intangible assets		1,884
	Net tangible assets		2,871
	Total fair value of net assets acquired	$	17,295
	Goodwill (tax deductible)	$	5,345
EA Technologies, LLC [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	13,500
	Customer relationships	$	6,960
	Net tangible assets		2,339
	Total fair value of net assets acquired	$	9,299
	Goodwill (tax deductible)	$	4,201
M-Tec Corporation [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	5,990
	Contingent consideration		450
	Total fair value of consideration given	$	6,440
	Customer relationships	$	2,310
	Other identifiable intangible assets		315
	Net tangible assets		1,723
	Total fair value of net assets acquired	$	4,348
	Goodwill (tax deductible)	$	2,092
Home-Style Industries [Member]	'
Business Acquisition [Line Items]	'
Schedule Of Business Acquisitions	'
	Cash consideration	$	7,250
	Contingent consideration		150
	Total fair value of consideration given	$	7,400
	Customer relationships	$	3,350
	Other identifiable intangible assets		365
	Net tangible assets		2,582
	Total fair value of net assets acquired	$	6,297
	Goodwill (tax deductible)	$	1,103

Accounts_Receivable_Tables

Accounts Receivable (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts Receivable [Abstract]	'
Schedule Of Allowance For Doubtful Accounts Receivable	'
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	677		$	858		$	499
	Provision for doubtful accounts		194			304			72
	Additions related to acquired businesses		5			-			129
	Recoveries		1			8			340
	Accounts written off		(172	)		(493	)		(182	)
	Balance at end of period	$	705		$	677		$	858

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventories [Abstract]	'
Schedule Of Inventories	'
	(In thousands)		2013		2012
	Raw materials	$	84,279	$	78,434
	Work in process		3,038		2,074
	Finished goods		13,894		16,859
	Inventories, net	$	101,211	$	97,367

Fixed_Assets_Tables

Fixed Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Fixed Assets [Abstract]	'
Schedule Of Fixed Assets	'
						Estimated Useful
	(In thousands)		2013		2012	Life in Years
	Land	$	12,018	$	10,445
	Buildings and improvements		76,577		69,805		10 to 40
	Leasehold improvements		2,044		1,329		3 to 10
	Machinery and equipment		130,461		109,582		3 to 15
	Furniture and fixtures		17,745		13,738		3 to 8
	Construction in progress		2,771		6,190
	Fixed assets, at cost		241,616		211,089
	Less accumulated depreciation and
	amortization		115,634		103,153
	Fixed assets, net	$	125,982	$	107,936
Schedule Of Depreciation And Amortization Of Fixed Assets	'
	(In thousands)		2013		2012		2011
	Cost of sales	$	14,667	$	11,886	$	10,130
	Selling, general and administrative expenses		2,773		2,475		1,990
	Total	$	17,440	$	14,361	$	12,120

Accrued_Expenses_And_Other_Cur1

Accrued Expenses And Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Expenses And Other Current Liabilities [Abstract]	'
Schedule Of Accrued Expenses And Other Current Liabilities	'
	(In thousands)		2013		2012
	Employee compensation and benefits	$	18,583	$	18,490
	Warranty		11,731		9,125
	Sales rebates		4,773		5,711
	Current portion of contingent consideration
	related to acquisitions		3,462		5,429
	Other		8,873		9,300
	Accrued expenses and other
	current liabilities	$	47,422	$	48,055
Schedule Of Reconciliation Of The Activity Related To Accrued Warranty	'
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	12,729		$	8,640		$	5,892
	Provision for warranty expense		13,874			12,383			6,750
	Warranty liability from acquired businesses		21			8			563
	Warranty costs paid		(9,299	)		(8,302	)		(4,565	)
	Total accrued warranty		17,325			12,729			8,640
	Less long-term portion		5,594			3,604			2,758
	Current accrued warranty	$	11,731		$	9,125		$	5,882

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Schedule Of Provisions Of Income Taxes	'
	(In thousands)		2013		2012			2011
	Current:
	Federal	$	23,430	$	17,483		$	13,875
	State		4,129		3,647			3,501
	Total current provision	$	27,559	$	21,130		$	17,376
	Deferred:
	Federal		68		(298	)		590
	State		201		(370	)		231
	Total deferred provision	$	269	$	(668	)	$	821
	Provision for income taxes	$	27,828	$	20,462		$	18,197
Schedule Of Income Taxes Reconciliation	'
	(In thousands)		2013			2012			2011
	Income tax at federal statutory rate	$	27,281		$	20,231		$	16,889
	State income taxes, net of federal income
	tax impact		2,815			2,130			2,426
	Manufacturing credit pursuant to Jobs
	Creation Act		(1,444	)		(1,101	)		(828	)
	Other		(824	)		(798	)		(290	)
	Provision for income taxes	$	27,828		$	20,462		$	18,197
Schedule Of Deferred Tax Assets And Liabilities	'
	(In thousands)		2013			2012
	Deferred tax assets:
	Goodwill and other intangible assets	$	15,024		$	15,768
	Stock-based compensation		5,116			4,272
	Deferred compensation		3,722			2,713
	Warranty		3,477			2,423
	Inventory		3,245			3,248
	Other		4,048			2,911
	Total deferred tax assets		34,632			31,335
	Deferred tax liabilities:
	Fixed assets		(9,839	)		(6,269	)
	Net deferred tax assets	$	24,793		$	25,066
Schedule Of Unrecognized Tax Benefits	'
	(In thousands)		2013			2012			2011
	Balance at beginning of period	$	1,701		$	2,185		$	2,213
	Changes in tax positions of prior years		(29	)		(297	)		(341	)
	Additions based on tax positions
	related to the current year		676			385			313
	Payments		(126	)		-			-
	Closure of tax years		(853	)		(572	)		-
	Balance at end of period	$	1,369		$	1,701		$	2,185

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Schedule Of Future Minimum Lease Payments	'
	2014	$	3,496
	2015		2,518
	2016		2,101
	2017		1,867
	2018		1,666
	Thereafter		3,605
	Total minimum lease payments	$	15,253
Summary Of Contingent Consideration Liability	'
				Fair Value of
			Estimated		Estimated
			Remaining		Remaining
	Acquisition (In thousands)		Payments		Payments
	Schwintek products	$	5,188	(a) $	3,871
	Level-Up® six-point leveling system		4,033	(b)	3,327
	Other acquired products		240	(c)	216
	Total	$	9,461	$	7,414
	(a)	The remaining contingent consideration for two of the three products expires in March 2014. Contingent consideration for the remaining product will cease five years after the product is first sold to customers. Two of the three products acquired have a combined remaining maximum contingent consideration of $4.4 million, of which the Company estimates $2.1 million will be paid. Other than expiration of the contingent consideration period, the remaining product has no maximum contingent consideration.
	(b)	Other than expiration of the contingent consideration period in February 2016, this product has no maximum contingent consideration.
	(c)	Contingent consideration expires at various dates through November 2025. Certain of these products have a combined remaining maximum contingent consideration of $3.1 million, while the remaining products have no maximum contingent consideration.
Reconciliation Of Contingent Consideration Liability	'
	(In thousands)		2013			2012			2011
	Beginning balance	$	11,519		$	14,561		$	12,104
	Acquisitions		-			67			1,090
	Payments		(5,456	)		(4,315	)		(398	)
	Accretion(a)		1,308			1,756			1,886
	Fair value adjustments(a)		43			(550	)		(121	)
	Total ending balance		7,414			11,519			14,561
	Less current portion in accrued expenses
	and other current liabilities		(3,462	)		(5,429	)		(3,292	)
	Total long-term portion in other long-term
	liabilities	$	3,952		$	6,090		$	11,269
	(a) Recorded in selling, general and administrative expense in the Consolidated Statements of Income.
Schedule Of Severance Obligations	'
	(In thousands)		2013		2012		2011
	Other accrued expenses and current liabilities	$	1,064	$	1,778	$	449
	Other long-term liabilities		315		671		1,028
	Total executive succession and
	severance liability	$	1,379	$	2,449	$	1,477

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity [Abstract]	'
Schedule Of Stock-Based Compensation	'
	(In thousands)		2013		2012		2011
	Stock options	$	2,325	$	2,836	$	3,218
	Deferred stock units		5,425		1,888		1,264
	Restricted stock		911		849		105
	Stock awards		2,178		745		-
	Stock-based compensation expense	$	10,839	$	6,318	$	4,587
Schedule Of Fair Value Of Stock Option Grant	'
			2011
	Risk-free interest rate		0.71	%
	Expected volatility		55.2	%
	Expected life		4.1 years
	Contractual life		6.0 years
	Dividend yield		N/A
	Fair value of stock options granted	$	10.02
Schedule Of Stock Options	'
							Weighted
		Number of			Stock Option		Average
		Option Shares			Exercise Price		Exercise Price
	Outstanding at December 31, 2010	1,996,490		$	10.09- $31.11	$	21.7
	Granted	345,000		$	23.17	$	23.17
	Exercised	(87,300	)	$	10.09- $19.67	$	11.39
	Forfeited	(100,900	)	$	10.09- $31.11	$	22.37
	Expired	(342,640	)	$	26.83- $27.21	$	26.87
	Outstanding at December 31, 2011	1,810,650		$	10.09- $31.11	$	21.46
	Exercised	(422,131	)	$	8.09- $31.11	$	19.13
	Forfeited	(67,700	)	$	10.09- $31.11	$	22.61
	Reduction for cash dividend	-		$	8.09- $29.11	$	(2.00	)
	Outstanding at December 31, 2012	1,320,819		$	8.09- $29.11	$	19.92
	Exercised	(574,288	)	$	8.09- $29.11	$	23.04
	Forfeited	(22,870	)	$	8.09- $29.11	$	19.36
	Reduction for cash dividend	-		$	6.09- $19.17	$	(2.00	)
	Outstanding at December 31, 2013	723,661		$	6.09- $19.17	$	15.46
	Exercisable at December 31, 2013	388,521		$	6.09- $19.17	$	13.64
Schedule Exercise Of Stock Options	'
	(In thousands)		2013		2012		2011
	Intrinsic value of stock options exercised	$	9,062	$	4,838	$	1,079
	Cash receipts from stock options exercised	$	13,231	$	8,075	$	997
	Income tax benefits from stock option
	exercises	$	3,473	$	1,852	$	422
	Grant date fair value of stock options vested $		2,252	$	2,814	$	3,207
Summary Of Stock Options Outstanding	'
			Option		Remaining	Option
		Exercise	Shares		Life	Shares
		Price	Outstanding		in Years	Exercisable
	$	6.09	70,200		0.9	70,200
	$	7.53	400		0.9	400
	$	8.72	37,500		1	37,500
	$	15.49	131,181		1.9	94,281
	$	15.67	252,700		2.9	139,100
	$	19.17	231,680		3.9	47,040
		Total Shares	723,661	(a)		388,521	(a)
	(a) The aggregate intrinsic value for option shares outstanding and option shares exercisable is $25.9 million and $14.6 million, respectively. The weighted average remaining term for option shares outstanding and option shares exercisable is 2.7 years and 2.2 years, respectively. Recorded in selling, general and administrative expense in the Consolidated Statements of Operations.
Schedule Of Deferred Stock Units Transactions	'
		Number of
		Shares			Stock Price
	Outstanding at December 31, 2010	266,216		$	5.50- $40.68
	Issued	79,714		$	18.67- $25.48
	Granted	53,450		$	23.17
	Forfeited	(2,660	)	$	20.89- $23.49
	Exercised	(27,587	)	$	6.16- $25.06
	Outstanding at December 31, 2011	369,133		$	5.50- $40.68
	Issued	23,713		$	24.53- $32.07
	Granted	282,925		$	26.54- $30.50
	Dividend equivalents	34,568		$	33.32
	Exercised	(96,585	)	$	5.50- $40.68
	Outstanding at December 31, 2012	613,754		$	6.16- $33.32
	Issued	32,462		$	33.84- $48.53
	Granted	140,461		$	36.58- $50.85
	Forfeited	(4,505	)	$	30.5
	Exercised	(89,211	)	$	20.20- $30.65
	Outstanding at December 31, 2013	692,961		$	6.16- $50.85
Schedule Of Restricted Stock Grants	'
			2013		2012		2011
	Granted		17,885		29,841		36,260
	Stock price	$	50.89	$	30.5	$	23.17
	Fair value of stock granted	$	910	$	910	$	840
Schedule Of Computation Of Basic And Diluted Earnings Per Share	'
	(In thousands)	2013	2012	2011
	Weighted average shares outstanding
	for basic earnings per share	23,321	22,558	22,267
	Common stock equivalents pertaining
	to stock options and deferred
	stock units	432	270	177
	Weighted average shares outstanding
	for diluted earnings per share	23,753	22,828	22,444
Schedule Of Treasury Stock	'
				Weighted
				Average Price
		Shares		Per Share		Cost
	Purchases through 2010	501,279	$	18.7	$	9,374
	Purchases in 2011	33,856	$	18.44	$	626
	Total purchases	535,135	$	18.64	$	10,000

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
						2013								2012
	(In thousands)			Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
	Assets
	Deferred compensation		$	6,535	$	6,535	$	-	$	-	$	4,540	$	4,540	$	-	$	-
	Derivative instruments			-		-		-		-		223		-		223		-
	Total assets		$	6,535	$	6,535	$	-	$	-	$	4,763	$	4,540	$	223	$	-
	Liabilities
	Contingent consideration $			7,414	$	-	$	-	$	7,414	$	11,519	$	-	$	-	$	11,519
	Deferred compensation			9,673		9,673		-		-		7,015		7,015		-		-
	Total liabilities	$	17,087		$	9,673	$	-	$	7,414	$	18,534	$	7,015	$	-	$	11,519
Schedule Of Non-Recurring Losses Recognized Using Fair Value Measurements And The Carrying Value Of Any Assets And Liabilities Measured Using Fair Value Estimates	'
					2013				2012				2011
			Carrying		Non-Recurring		Carrying		Non-Recurring		Carrying		Non-Recurring
	(In thousands)		Value		Losses		Value		Losses		Value		Losses
	Assets
	Vacant owned facilities	$	3,197	$	145	$	5,009	$	523	$	10,031	$	-
	Other intangible assets		-		-		-		1,228		-		-
	Net assets of acquired
	businesses		4,382		-		1,345		-		38,389		-
	Total assets	$	7,579	$	145	$	6,354	$	1,751	$	48,420	$	-
	Liabilities
	Vacant leased facilities	$	-	$	-	$	-	$	50	$	399	$	203
	Total liabilities	$	-	$	-	$	-	$	50	$	399	$	203

Quarterly_Results_Of_Operation1

Quarterly Results Of Operations (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Results Of Operations [Abstract]	'
Schedule Of Quarterly Results Of Operations	'
			First		Second		Third		Fourth
	(In thousands, except per share amounts)		Quarter		Quarter		Quarter		Quarter		Year
	Year ended December 31, 2013
	Net sales	$	252,586	$	287,192	$	250,851	$	224,947	$	1,015,576
	Gross profit	$	47,591	$	61,433	$	56,126	$	47,959	$	213,109
	Income before income taxes	$	13,470	$	25,623	$	22,754	$	16,100	$	77,947
	Net income	$	8,372	$	15,865	$	14,805	$	11,077	$	50,119
	Net income per common share:
	Basic	$	0.36	$	0.68	$	0.63	$	0.47	$	2.15
	Diluted	$	0.36	$	0.67	$	0.62	$	0.46	$	2.11
	Stock market price:
	High	$	38.67	$	41.25	$	45.54	$	54.21	$	54.21
	Low	$	33.34	$	34.13	$	39.6	$	45.86	$	33.34
	Close (at end of quarter)	$	36.31	$	39.32	$	45.54	$	51.2	$	51.2
	Year ended December 31, 2012
	Net sales	$	223,552	$	251,014	$	226,323	$	200,234	$	901,123
	Gross profit	$	44,823	$	46,423	$	41,542	$	35,871	$	168,659
	Income before income taxes	$	17,299	$	18,912	$	14,832	$	6,759	$	57,802
	Net income	$	11,116	$	11,708	$	9,771	$	4,745	$	37,340
	Net income per common share:
	Basic	$	0.5	$	0.52	$	0.43	$	0.21	$	1.66
	Diluted	$	0.49	$	0.52	$	0.43	$	0.21	$	1.64
	Stock market price:
	High	$	29.84	$	30.02	$	30.86	$	33.32	$	33.32
	Low	$	24.67	$	25.83	$	25.82	$	29.48	$	24.67
	Close (at end of quarter)	$	27.31	$	27.85	$	30.21	$	32.25	$	32.25

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies [Line Items]	'	'	'
Number of unconsolidated subsidiaries	0	'	'
Number of plants	31	'	'
Number of states in which the company operates	11	'	'
Selling, General, And Administrative Expense [Member]	'	'	'
Significant Accounting Policies [Line Items]	'	'	'
Shipping and handling costs	$36.40	$32.70	$24.60

Segment_Reporting_Narrative_De

Segment Reporting (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Number of reportable segments	2	'	'
RV Segment [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Consolidated net sales, percentage	88.00%	87.00%	84.00%
MH Segment [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Consolidated net sales, percentage	12.00%	13.00%	16.00%
Travel Trailer And Fifth-Wheels [Member] | RV Segment [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net sales components, percentage	81.00%	'	'

Segment_Reporting_Schedule_Of_

Segment Reporting (Schedule Of Information Relating To Segments) (Details) (USD $)

3 Months Ended

12 Months Ended

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales to external customers

$224,947,000

$250,851,000

$287,192,000

$252,586,000

$200,234,000

$226,323,000

$251,014,000

$223,552,000

$1,015,576,000

[1]

$901,123,000

[1]

$681,166,000

[1]

Operating profit (loss)

'

'

'

'

'

'

'

'

78,298,000

[2]

58,132,000

[2]

48,548,000

[2]

Total assets

453,184,000

[3]

'

'

'

373,868,000

[3]

'

'

'

453,184,000

[3]

373,868,000

[3]

351,083,000

[3]

Expenditures for long-lived assets

'

'

'

'

'

'

'

'

37,671,000

[4]

33,632,000

[4]

70,412,000

[4]

Depreciation and amortization

'

'

'

'

'

'

'

'

27,500,000

25,665,000

20,522,000

Purchase of long-lived assets as part of business acquisition

'

'

'

'

'

'

'

'

4,800,000

1,500,000

45,200,000

Berkshire Hathaway Inc. [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated net sales, percentage

'

'

'

'

'

'

'

'

28.00%

27.00%

27.00%

RV Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales to external customers

'

'

'

'

'

'

'

'

893,694,000

[1]

780,925,000

[1]

570,643,000

[1]

Operating profit (loss)

'

'

'

'

'

'

'

'

68,248,000

[2]

47,172,000

[2]

37,715,000

[2]

Total assets

306,139,000

[3]

'

'

'

281,728,000

[3]

'

'

'

306,139,000

[3]

281,728,000

[3]

268,395,000

[3]

Expenditures for long-lived assets

'

'

'

'

'

'

'

'

34,989,000

[4]

30,893,000

[4]

66,931,000

[4]

Depreciation and amortization

'

'

'

'

'

'

'

'

24,615,000

22,750,000

17,593,000

Consolidated net sales, percentage

'

'

'

'

'

'

'

'

88.00%

87.00%

84.00%

RV Segment [Member] | Thor Industries, Inc. [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Consolidated net sales, percentage

'

'

'

'

'

'

'

'

31.00%

34.00%

36.00%

MH Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales to external customers

'

'

'

'

'

'

'

'

121,882,000

[1]

120,198,000

[1]

110,523,000

[1]

Operating profit (loss)

'

'

'

'

'

'

'

'

11,926,000

[2]

12,416,000

[2]

10,833,000

[2]

Total assets

32,948,000

[3]

'

'

'

35,668,000

[3]

'

'

'

32,948,000

[3]

35,668,000

[3]

40,737,000

[3]

Expenditures for long-lived assets

'

'

'

'

'

'

'

'

2,682,000

[4]

2,739,000

[4]

3,378,000

[4]

Depreciation and amortization

'

'

'

'

'

'

'

'

2,806,000

2,822,000

2,834,000

Consolidated net sales, percentage

'

'

'

'

'

'

'

'

12.00%

13.00%

16.00%

Total Segment Operating Profit [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net sales to external customers

'

'

'

'

'

'

'

'

1,015,576,000

[1]

901,123,000

[1]

681,166,000

[1]

Operating profit (loss)

'

'

'

'

'

'

'

'

80,174,000

[2]

59,588,000

[2]

48,548,000

[2]

Total assets

339,087,000

[3]

'

'

'

317,396,000

[3]

'

'

'

339,087,000

[3]

317,396,000

[3]

309,132,000

[3]

Expenditures for long-lived assets

'

'

'

'

'

'

'

'

37,671,000

[4]

33,632,000

[4]

70,309,000

[4]

Depreciation and amortization

'

'

'

'

'

'

'

'

27,421,000

25,572,000

20,427,000

Corporate And Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Operating profit (loss)

'

'

'

'

'

'

'

'

-1,876,000

[2]

-1,456,000

[2]

'

Total assets

114,097,000

[3]

'

'

'

56,472,000

[3]

'

'

'

114,097,000

[3]

56,472,000

[3]

41,951,000

[3]

Expenditures for long-lived assets

'

'

'

'

'

'

'

'

'

'

103,000

[4]

Depreciation and amortization

'

'

'

'

'

'

'

'

$79,000

$93,000

$95,000

[1]

Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.

[2]

Certain general and administrative expenses are allocated between the segments based upon net sales or operating profit, depending upon the nature of the expense.

[3]

Segment assets include accounts receivable, inventories, fixed assets, goodwill and other intangible assets. Corporate and other assets include cash and cash equivalents, prepaid expenses and other current assets, deferred taxes, and other assets.

[4]

Expenditures for long-lived assets include capital expenditures, as well as fixed assets, goodwill and other intangible assets purchased as part of the acquisition of businesses. The Company purchased $4.8 million, $1.5 million and $45.2 million of long-lived assets, as part of the acquisitions of businesses in the years ended December 31, 2013, 2012 and 2011, respectively.

Segment_Reporting_Schedule_Of_1

Segment Reporting (Schedule Of Net Sales By Product) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

$224,947

$250,851

$287,192

$252,586

$200,234

$226,323

$251,014

$223,552

$1,015,576

[1]

$901,123

[1]

$681,166

[1]

RV Segment - Chassis, Chassis Parts And Slide-Out Mechanisms [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

493,244

443,850

316,580

RV Segment - Windows, Doors And Screens [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

181,934

173,436

126,130

RV Segment - Furniture And Mattresses [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

100,196

78,082

67,088

RV Segment - Axles And Suspension Solutions [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

69,818

57,275

43,669

RV Segment - Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

48,502

28,282

17,176

RV Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

893,694

[1]

780,925

[1]

570,643

[1]

MH Segment - Windows, Door And Screens [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

67,029

63,655

58,377

MH Segment - Chassis And Chassis Parts [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

38,359

41,874

38,754

MH Segment - Other [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

16,494

14,669

13,392

MH Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

$121,882

[1]

$120,198

[1]

$110,523

[1]

[1]

Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.

Segment_Reporting_Schedule_Of_2

Segment Reporting (Schedule Of Net Sales By Segment) (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

$224,947

$250,851

$287,192

$252,586

$200,234

$226,323

$251,014

$223,552

$1,015,576

[1]

$901,123

[1]

$681,166

[1]

Travel Trailer And Fifth-Wheels [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

727,783

653,478

497,544

Motorhomes [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

47,937

34,612

17,492

RV Aftermarket [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

25,334

19,119

14,660

RV Adjacent Industries [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

92,640

73,716

40,947

RV Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

893,694

[1]

780,925

[1]

570,643

[1]

Manufactured Housing OEMs [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

80,245

80,392

77,087

Manufactured Housing Aftermarket [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

13,719

13,110

13,073

Manufactured Housing Adjacent Industries [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

27,918

26,696

20,363

MH Segment [Member]

'

'

'

'

'

'

'

'

'

'

'

Segment Reporting Information [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

'

'

'

'

'

$121,882

[1]

$120,198

[1]

$110,523

[1]

[1]

Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.

Acquisitions_Goodwill_And_Othe2

Acquisitions, Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)

1 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

Nov. 30, 2013

Nov. 30, 2012

Nov. 30, 2011

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Feb. 27, 2014

Dec. 31, 2013

Feb. 27, 2014

Dec. 31, 2013

Dec. 13, 2013

Dec. 31, 2013

Jun. 24, 2013

Dec. 31, 2013

Dec. 31, 2012

Feb. 21, 2012

Dec. 31, 2011

Dec. 01, 2011

Dec. 31, 2011

Aug. 29, 2011

Dec. 31, 2011

Aug. 22, 2011

Dec. 31, 2011

Jul. 19, 2011

Dec. 31, 2011

Jan. 28, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

item

Innovative Design Solutions, Inc. [Member]

Innovative Design Solutions, Inc. [Member]

Innovative Design Solutions, Inc. [Member]

Fortress Technologies, LLC [Member]

Fortress Technologies, LLC [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

M&M Fabricators [Member]

M&M Fabricators [Member]

Starquest Products, LLC [Member]

Starquest Products, LLC [Member]

EA Technologies, LLC [Member]

EA Technologies, LLC [Member]

M-Tec Corporation [Member]

M-Tec Corporation [Member]

Home-Style Industries [Member]

Home-Style Industries [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Parent Company [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

Starquest Products, LLC [Member]

EA Technologies, LLC [Member]

M-Tec Corporation [Member]

Home-Style Industries [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total net sales

'

'

'

$224,947,000

$250,851,000

$287,192,000

$252,586,000

$200,234,000

$226,323,000

$251,014,000

$223,552,000

$1,015,576,000

[1]

$901,123,000

[1]

$681,166,000

[1]

$19,000,000

'

$13,000,000

$3,000,000

'

$2,000,000

'

'

$6,000,000

'

$3,000,000

'

$22,000,000

'

$40,000,000

'

$12,000,000

'

$12,000,000

'

'

'

'

'

'

Purchase price, cash paid at closing

'

'

'

'

'

'

'

'

'

'

'

'

'

'

34,200,000

'

'

'

3,299,000

'

1,451,000

'

'

1,164,000

'

961,000

'

22,600,000

'

13,500,000

'

5,990,000

'

7,250,000

'

'

'

'

'

Purchase price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36,000,000

'

'

'

'

'

'

'

'

1,646,000

'

1,411,000

'

22,640,000

'

'

'

6,440,000

'

7,400,000

'

'

'

'

'

Number of acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Subsequent increase in net sales

'

'

'

'

'

'

'

'

'

'

'

'

'

40,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase in net sales had acquisitions been completed at the beginning of the period

'

'

'

'

'

'

'

'

'

'

'

'

'

55,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance of purchase price to be paid, period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful life in years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'7 years

'15 years

'15 years

'15 years

'12 years

Goodwill impairment

$0

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.

Acquisitions_Goodwill_And_Othe3

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Business Acquisitions) (Details) (USD $)

Dec. 13, 2013

Jun. 24, 2013

Feb. 21, 2012

Dec. 01, 2011

Aug. 29, 2011

Aug. 22, 2011

Jul. 19, 2011

Jan. 28, 2011

Dec. 13, 2013

Jun. 24, 2013

Jun. 24, 2013

Jun. 24, 2013

Feb. 21, 2012

Dec. 01, 2011

Aug. 29, 2011

Aug. 22, 2011

Jul. 19, 2011

Jan. 28, 2011

Feb. 21, 2012

Aug. 29, 2011

Jul. 19, 2011

Jan. 28, 2011

In Thousands, unless otherwise specified

Fortress Technologies, LLC [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

M&M Fabricators [Member]

Starquest Products, LLC [Member]

EA Technologies, LLC [Member]

M-Tec Corporation [Member]

Home-Style Industries [Member]

Working Capital [Member]

Working Capital [Member]

Non-Compete Agreements [Member]

Tangible Assets [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Other Intangible Assets [Member]

Fortress Technologies, LLC [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Midstates Tool & Die And Engineering Inc. [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

M&M Fabricators [Member]

Starquest Products, LLC [Member]

EA Technologies, LLC [Member]

M-Tec Corporation [Member]

Home-Style Industries [Member]

Euramax International, Inc - RV Entry Door Operation [Member]

Starquest Products, LLC [Member]

M-Tec Corporation [Member]

Home-Style Industries [Member]

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash consideration

$3,299

$1,451

$1,164

$961

$22,600

$13,500

$5,990

$7,250

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration

'

'

'

450

40

'

450

150

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Present value of future payments

'

'

482

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total fair value of consideration given

'

'

1,646

1,411

22,640

'

6,440

7,400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

270

'

'

'

'

'

40

'

'

'

Net tangible assets

3,410

'

785

820

2,871

2,339

1,723

2,582

-111

20

40

1,023

'

330

12,540

6,960

2,310

3,350

'

1,884

315

365

Total fair value of net assets acquired

3,299

1,083

1,095

1,150

17,295

9,299

4,348

6,297

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill (tax deductible)

'

$368

$551

$261

$5,345

$4,201

$2,092

$1,103

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisitions_Goodwill_And_Othe4

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Goodwill By Reportable Segment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]	'	'	'	'
Accumulated cost	$72,072	'	'	$58,024
Accumulated impairment	-50,527	'	'	-50,527
Net balance	21,177	20,499	7,497	'
Acquisitions	368	678	13,002	'
Net balance	21,545	21,177	20,499	'
RV Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Accumulated cost	62,047	'	'	48,773
Accumulated impairment	-41,276	'	'	-41,276
Net balance	20,403	19,725	7,497	'
Acquisitions	368	678	12,228	'
Net balance	20,771	20,403	19,725	'
MH Segment [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Accumulated cost	10,025	'	'	9,251
Accumulated impairment	-9,251	'	'	-9,251
Acquisitions	'	'	774	'
Net balance	$774	$774	$774	'

Acquisitions_Goodwill_And_Othe5

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets By Segment) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Other intangible assets	$59,392	$69,218
RV Segment [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Other intangible assets	56,954	66,191
MH Segment [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Other intangible assets	$2,438	$3,027

Acquisitions_Goodwill_And_Othe6

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Cost, Customer relationships	50,105	50,105
Accumulated Amortization, Customer relationships	21,999	17,857
Net Balance, Customer relationships	28,106	32,248
Gross Cost, Patents	41,651	41,507
Accumulated Amortization, Patents	18,461	14,850
Net Balance, Patents	23,190	26,657
Gross Cost, Tradenames	7,959	7,959
Accumulated Amortization, Tradenames	5,976	4,525
Net Balance, Tradenames	1,983	3,434
Gross Cost, Non-compete agreements	3,866	4,989
Accumulated Amortization, Non-compete agreements	2,210	2,567
Net Balance, Non-compete agreements	1,656	2,422
Gross Cost, Purchased research and development	4,457	4,457
Net Balance, Purchased research and development	4,457	4,457
Gross Cost, Other intangible assets	108,038	109,017
Accumulated Amortization, Other intangible assets	48,646	39,799
Net Balance, Other intangible assets	59,392	69,218
Minimum [Member] | Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'6 years	'3 years
Minimum [Member] | Patents [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'3 years	'2 years
Minimum [Member] | Tradenames [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'5 years	'5 years
Minimum [Member] | Non-Compete Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'3 years	'1 year
Maximum [Member] | Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'16 years	'16 years
Maximum [Member] | Patents [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'19 years	'19 years
Maximum [Member] | Tradenames [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'15 years	'15 years
Maximum [Member] | Non-Compete Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Estimated Useful Life in Years	'6 years	'7 years

Acquisitions_Goodwill_And_Othe7

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Amortization Expense Of Other Intangible Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	$10,008	$11,252	$8,351
Cost Of Sales [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	3,610	4,492	3,393
Selling, General, And Administrative Expense [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Amortization expense	$6,398	$6,760	$4,958

Acquisitions_Goodwill_And_Othe8

Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Estimated Amortization Expense) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortization Expense, By Year [Line Items]	'
2014	$9,107
2015	8,594
2016	7,871
2017	7,147
2018	6,118
Cost Of Sales [Member]	'
Amortization Expense, By Year [Line Items]	'
2014	3,890
2015	4,028
2016	4,175
2017	3,816
2018	3,081
Selling, General, And Administrative Expense [Member]	'
Amortization Expense, By Year [Line Items]	'
2014	5,217
2015	4,566
2016	3,696
2017	3,331
2018	$3,037

Accounts_Receivable_Details

Accounts Receivable (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounts Receivable [Abstract]	'	'	'
Balance at beginning of period	$677,000	$858,000	$499,000
Provision for doubtful accounts	194,000	304,000	72,000
Additions related to acquired businesses	5,000	'	129,000
Recoveries	1,000	8,000	340,000
Accounts written off	-172,000	-493,000	-182,000
Balance at end of period	705,000	677,000	858,000
Allowance for prompt payment discounts	$300,000	$300,000	'

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventories [Abstract]	'	'
Raw materials	$84,279	$78,434
Work in process	3,038	2,074
Finished goods	13,894	16,859
Inventories, net	$101,211	$97,367

Fixed_Assets_Schedule_Of_Fixed

Fixed Assets (Schedule Of Fixed Assets) (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Land [Member]

Land [Member]

Buildings And Improvements [Member]

Buildings And Improvements [Member]

Leasehold Improvements [Member]

Leasehold Improvements [Member]

Machinery And Equipment [Member]

Machinery And Equipment [Member]

Furniture And Fixtures [Member]

Furniture And Fixtures [Member]

Construction In Progress [Member]

Construction In Progress [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Buildings And Improvements [Member]

Leasehold Improvements [Member]

Machinery And Equipment [Member]

Furniture And Fixtures [Member]

Buildings And Improvements [Member]

Leasehold Improvements [Member]

Machinery And Equipment [Member]

Furniture And Fixtures [Member]

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed assets, at cost

$241,616

$211,089

$12,018

$10,445

$76,577

$69,805

$2,044

$1,329

$130,461

$109,582

$17,745

$13,738

$2,771

$6,190

'

'

'

'

'

'

'

'

Less accumulated depreciation and amortization

115,634

103,153

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fixed assets, net

$125,982

$107,936

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Useful Life in Years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'3 years

'3 years

'3 years

'40 years

'10 years

'15 years

'8 years

Fixed_Assets_Schedule_Of_Depre

Fixed Assets (Schedule Of Depreciation And Amortization Of Fixed Assets) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fixed Assets [Abstract]	'	'	'
Cost of sales	$14,667	$11,886	$10,130
Selling, general and administrative expenses	2,773	2,475	1,990
Total	$17,440	$14,361	$12,120

Accrued_Expenses_And_Other_Cur2

Accrued Expenses And Other Current Liabilities (Schedule Of Accrued Expenses And Other Current Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Accrued Expenses And Other Current Liabilities [Abstract]	'	'	'
Employee compensation and benefits	$18,583	$18,490	'
Warranty	11,731	9,125	5,882
Sales rebates	4,773	5,711	'
Current portion of contingent consideration related to acquisitions	3,462	5,429	'
Other	8,873	9,300	'
Accrued expenses and other current liabilities	$47,422	$48,055	'

Accrued_Expenses_And_Other_Cur3

Accrued Expenses And Other Current Liabilities (Schedule Of Reconciliation Of The Activity Related To Accrued Warranty) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accrued Expenses And Other Current Liabilities [Abstract]	'	'	'
Balance at beginning of period	$12,729	$8,640	$5,892
Provision for warranty expense	13,874	12,383	6,750
Warranty liability from acquired businesses	21	8	563
Warranty costs paid	-9,299	-8,302	-4,565
Total accrued warranty	17,325	12,729	8,640
Less long-term portion	5,594	3,604	2,758
Current accrued warranty	$11,731	$9,125	$5,882

Retirement_And_Other_Benefit_P1

Retirement And Other Benefit Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Employer contributions to defined contribution plan	$1,400,000	$1,100,000	$1,000,000
Other long-term liabilities	21,380,000	19,843,000	'
Accrued expenses and other current liabilities	8,873,000	9,300,000	'
Deferred Compensation [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'	'	'
Compensation deferred by participants	1,700,000	1,900,000	2,000,000
Amount withdrawn from the Plan by participants	200,000	0	600,000
Other long-term liabilities	9,400,000	7,000,000	'
Accrued expenses and other current liabilities	$200,000	'	'

LongTerm_Indebtedness_Details

Long-Term Indebtedness (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Feb. 24, 2014

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

Prudential Investment Management, Inc. [Member]

Senior Promissory Notes [Member]

Prime Rate [Member]

Prime Rate [Member]

Prime Rate [Member]

LIBOR Plus [Member]

LIBOR Plus [Member]

LIBOR Plus [Member]

LIBOR Plus [Member]

Subsequent Event [Member]

Maximum [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

Maximum [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

Minimum [Member]

Maximum [Member]

Prudential Investment Management, Inc. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

JPMorgan Chase Bank, N.A. And Wells Fargo Bank, N.A. [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt outstanding

$0

$0

'

'

'

'

'

$0

'

'

'

'

'

'

'

'

Letter of credit

'

'

'

'

2,200,000

3,000,000

'

'

'

'

'

'

'

'

'

'

Line of credit expiration date

'

'

'

'

1-Jan-19

'

'

'

'

'

'

'

'

'

'

'

Credit expiration date

'

'

'

'

'

'

'

24-Feb-17

'

'

'

'

'

'

'

'

Maximum borrowings under line of credit

'

'

'

'

50,000,000

'

75,000,000

'

'

'

'

'

'

'

'

'

Potential increase in line of credit borrowing capacity

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

Minimum prime interest rate

'

'

'

'

'

'

'

'

'

2.50%

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

'

0.00%

0.00%

0.80%

2.00%

2.00%

2.00%

2.80%

Maturity period of Promissory Notes

'

'

'

'

'

'

'

'

'12 years

'

'

'

'

'

'

'

Period after request is issued, by company, for interest payable rate to be determined by Prudential

'

'

'

'

'

'

'

'5 days

'

'

'

'

'

'

'

'

Maximum leverage ratio

2.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining availability under the facilities

197,800,000

'

'

'

47,800,000

'

'

150,000,000

'

'

'

'

'

'

'

'

Cash and cash equivalents

$66,280,000

$9,939,000

$6,584,000

$38,880,000

'

'

'

'

'

'

'

'

'

'

'

'

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Federal income taxes receivable	$3,700,000	$2,700,000	'
State income taxes payable	'	200,000	'
Excess tax benefits on stock-based compensation	1,534,000	270,000	216,000
Reversal of deferred tax assets	'	'	2,500,000
Remaining available pool of excess tax benefits from prior stock option exercises	11,300,000	'	'
Accrued interest and penalties related to taxes	200,000	400,000	600,000
Unrecognized tax benefits, net of federal income tax benefits	$1,000,000	$1,200,000	$1,600,000
Percentage of operating located in Indiana	80.00%	'	'

Income_Taxes_Schedule_Of_Provi

Income Taxes (Schedule Of Provisions Of Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Current: Federal	$23,430	$17,483	$13,875
Current: State	4,129	3,647	3,501
Total current provision	27,559	21,130	17,376
Deferred: Federal	68	-298	590
Deferred: State	201	-370	231
Total deferred provision	269	-668	821
Provision for income taxes	$27,828	$20,462	$18,197

Income_Taxes_Schedule_Of_Incom

Income Taxes (Schedule Of Income Taxes Reconciliation) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Income tax at federal statutory rate	$27,281	$20,231	$16,889
State income taxes, net of federal income tax impact	2,815	2,130	2,426
Manufacturing credit pursuant to Jobs Creation Act	-1,444	-1,101	-828
Other	-824	-798	-290
Provision for income taxes	$27,828	$20,462	$18,197

Income_Taxes_Schedule_Of_Defer

Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Taxes [Abstract]	'	'
Goodwill and other intangible assets	$15,024	$15,768
Stock-based compensation	5,116	4,272
Deferred compensation	3,722	2,713
Warranty	3,477	2,423
Inventory	3,245	3,248
Other	4,048	2,911
Total deferred tax assets	34,632	31,335
Fixed assets	-9,839	-6,269
Net deferred tax assets	$24,793	$25,066

Income_Taxes_Schedule_Of_Unrec

Income Taxes (Schedule Of Unrecognized Tax Benefits) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Balance at beginning of period	$1,701	$2,185	$2,213
Changes in tax positions of prior years	-29	-297	-341
Additions based on tax positions related to the current year	676	385	313
Payments	-126	'	'
Closure of tax years	-853	-572	'
Balance at end of period	$1,369	$1,701	$2,185

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended						1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2014
								Severance And Relocation Costs [Member]	Severance And Relocation Costs [Member]	Severance And Relocation Costs [Member]	Subsequent Event [Member]
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Length of operating lease	'	'	'	'	'	'	'	'	'	'	'9 years
Aggregate minimum lease payments	'	'	'	'	'	'	'	'	'	'	$6,100,000
Rent expense	'	'	'	'	7,100,000	5,600,000	5,400,000	'	'	'	'
Percentage of weighted average cost of capital	'	'	'	'	15.50%	14.90%	'	'	'	'	'
Severance and acceleration of equity awards contract obligations	'	1,500,000	0	1,900,000	'	'	'	'	'	'	'
Savings in general and administrative costs	2,000,000	'	'	'	'	'	'	'	'	'	'
Selling, general and administrative expenses	'	'	'	'	$132,935,000	$109,071,000	$91,173,000	$500,000	$200,000	$100,000	'

Commitments_And_Contingencies_2

Commitments And Contingencies (Schedule Of Future Minimum Lease Payments) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies [Abstract]	'
2014	$3,496
2015	2,518
2016	2,101
2017	1,867
2018	1,666
Thereafter	3,605
Total minimum lease payments	$15,253

Commitments_And_Contingencies_3

Commitments And Contingencies (Summary Of Contingent Consideration Liability) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Estimated Remaining Payments	$9,461,000		'	'	'
Fair Value of Estimated Remaining Payments	7,414,000		11,519,000	14,561,000	12,104,000
Schwintek Products [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Estimated Remaining Payments	5,188,000	[1]	'	'	'
Fair Value of Estimated Remaining Payments	3,871,000		'	'	'
Contingent consideration period after product first sold to customers	'5 years		'	'	'
Level-UpTM Six-Point Leveling System [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Estimated Remaining Payments	4,033,000	[2]	'	'	'
Fair Value of Estimated Remaining Payments	3,327,000		'	'	'
Other Acquired Products [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Estimated Remaining Payments	240,000	[3]	'	'	'
Fair Value of Estimated Remaining Payments	216,000		'	'	'
Remaining maximum earn-out payments	3,100,000		'	'	'
Two Of Three Products [Member] | Schwintek Products [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Estimated Remaining Payments	2,100,000		'	'	'
Remaining maximum earn-out payments	4,400,000		'	'	'
Remaining Product [Member] | Schwintek Products [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Remaining maximum earn-out payments	0		'	'	'
Remaining Product [Member] | Other Acquired Products [Member]	'		'	'	'
Business Acquisition, Contingent Consideration [Line Items]	'		'	'	'
Remaining maximum earn-out payments	$0		'	'	'
[1]	The remaining contingent consideration for two of the three products expires in March 2014. Contingent consideration for the remaining product will cease five years after the product is first sold to customers. Two of the three products acquired have a combined remaining maximum contingent consideration of $4.4 million, of which the Company estimates $2.1 million will be paid. Other than expiration of the contingent consideration period, the remaining product has no maximum contingent consideration.
[2]	Other than expiration of the contingent consideration period in February 2016, this product has no maximum contingent consideration.
[3]	Contingent consideration expires at various dates through November 2025. Certain of these products have a combined remaining maximum contingent consideration of $3.1 million, while the remaining products have no maximum contingent consideration.

Commitments_And_Contingencies_4

Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Commitments And Contingencies [Abstract]	'		'		'
Beginning balance	$11,519		$14,561		$12,104
Acquisitions	'		67		1,090
Payments	-5,456		-4,315		-398
Accretion	1,308	[1]	1,756	[1]	1,886	[1]
Fair value adjustments	43	[1]	-550	[1]	-121	[1]
Total ending balance	7,414		11,519		14,561
Less current portion in accrued expenses and other current liabilities	-3,462		-5,429		-3,292
Total long-term portion in other long-term liabilities	$3,952		$6,090		$11,269
[1]	Recorded in selling, general and administrative expense in the Consolidated Statements of Income.

Commitments_And_Contingencies_5

Commitments And Contingencies (Schedule Of Severance Obligations) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Restructuring Cost and Reserve [Line Items]	'	'	'
Other accrued expenses and current liabilities	$47,422	$48,055	'
Other long-term liabilities	21,380	19,843	'
Total liabilities	139,571	89,623	'
Executive Succession And Severance Obligations [Member]	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Other accrued expenses and current liabilities	1,064	1,778	449
Other long-term liabilities	315	671	1,028
Total liabilities	$1,379	$2,449	$1,477

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	0 Months Ended		1 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Jan. 06, 2014	Dec. 20, 2012	Feb. 28, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Dividends paid per share	$2	$2	'	'	'	'	'
Dividends paid	$46.70	$45	'	'	'	'	'
Deferred stock units, per share	$2	'	$45.98	'	'	'	'
Deferred stock units, value	1.4	'	2	'	'	'	'
Reduction in outstanding options exercise price	$2	'	'	'	'	'	'
Shares available for grant	'	'	'	246,368	688,712	1,361,718	'
Amount of compensation exchanged for deferred stock units	'	'	'	0.1	0.2	1.1	'
Deferred stock units issued	'	'	43,188	'	'	'	'
Minimum percentage stock option exercise price must be equal to fair market value	'	'	'	100.00%	'	'	'
Minimum holding period of common stock	'	'	'	'6 months	'	'	'
Stock options expiration period, years after grant date	'	'	'	'6 years	'	'	'
Vesting period	'	'	'	'5 years	'	'	'
Unvested stock options, unrecognized compensation costs	'	'	'	2.7	'	'	'
Weighted average diluted shares outstanding excludes shares of common stock subject to stock options	'	'	'	303,240	426,788	1,311,330	'
Shares authorized to repurchase of Common Stock	'	'	'	'	'	'	1,000,000
Executive Officers [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Shares available for grant	'	'	'	85,000	'	'	'
Other Officers [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Shares available for grant	'	'	'	18,500	'	'	'
Minimum [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Restricted stock granted, restriction period	'	'	'	'1 year	'	'	'
Maximum [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Award exercise period	'	'	'	'10 years	'	'	'
Stock Options [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Unrecognized compensation costs, weighted-average recognition period	'	'	'	'2 years 4 months 24 days	'	'	'
Deferred Stock Units [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Unrecognized compensation costs, weighted-average recognition period	'	'	'	'2 years 3 months 18 days	'	'	'
Unrecognized compensation costs	'	'	'	8.9	'	'	'
Restricted Stock [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Unrecognized compensation costs, weighted-average recognition period	'	'	'	'10 months 24 days	'	'	'
Unrecognized compensation costs	'	'	'	0.8	'	'	'
Stock Awards [Member]	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'
Unrecognized compensation costs, weighted-average recognition period	'	'	'	'1 year 9 months 18 days	'	'	'
Unrecognized compensation costs	'	'	'	2.9	'	'	'
Stock awards, performance period	'	'	'	'3 years	'	'	'
Stock awards, grant date fair value	'	'	'	$5.20	'	'	'

Stockholders_Equity_Schedule_o

Stockholders' Equity (Schedule of Stock-Based Compensation) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	$10,839	$6,318	$4,587
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	2,325	2,836	3,218
Deferred Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	5,425	1,888	1,264
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	911	849	105
Stock Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	$2,178	$745	'

Recovered_Sheet1

Stockholders' Equity (Schedule Of Fair Value Of Stock Option Grant) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011
Stockholders' Equity [Abstract]	'
Risk-free interest rate	0.71%
Expected volatility	55.20%
Expected life	'4 years 1 month 6 days
Contractual life	'6 years
Fair value of stock options granted	$10.02

Stockholders_Equity_Schedule_O1

Stockholders' Equity (Schedule Of Stock Options) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'	'	'
Number of Option Shares, Exercised	-681,426		-550,352	-151,150	'
Number of Option Shares, Outstanding	723,661	[1]	'	'	'
Number of Options Shares, Exercisable at December 31, 2013	388,521	[1]	'	'	'
Stock Option Exercise Price, Outstanding, Minimum	$6.09		$8.09	$10.09	$10.09
Stock Option Exercise Price, Outstanding, Maximum	$19.17		$29.11	$31.11	$31.11
Stock Option Exercise Price, Granted	'		'	$23.17	'
Stock Option Exercise Price, Exercised, Minimum	$8.09		$8.09	$10.09	'
Stock Option Exercise Price, Exercised, Maximum	$29.11		$31.11	$19.67	'
Stock Option Exercise Price, Forfeited, Minimum	$8.09		$10.09	$10.09	'
Stock Option Exercise Price, Forfeited, Maximum	$29.11		$31.11	$31.11	'
Stock Option Exercise Price, Expired, Minimum	'		'	$26.83	'
Stock Option Exercise Price, Expired, Maximum	'		'	$27.21	'
Stock Option Exercise Price, Reduction For Cash Dividend, Minimum	$6.09		$8.09	'	'
Stock Option Exercise Price, Reduction For Cash Dividend, Maximum	$19.17		$29.11	'	'
Stock Option Exercise Price, Outstanding, Minimum	$6.09		$8.09	$10.09	$10.09
Stock Option Exercise Price, Outstanding, Maximum	$19.17		$29.11	$31.11	$31.11
Stock Option Exercise Price, Exercisable, Minimum	$6.09		'	'	'
Stock Option Exercise Price, Exercisable, Maximum	$19.17		'	'	'
Equity Plan [Member]	'		'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'	'	'
Number of Option Shares, Outstanding	1,320,819		1,810,650	1,996,490	'
Number of Option Shares, Granted	'		'	345,000	'
Number of Option Shares, Exercised	-574,288		-422,131	-87,300	'
Number of Option Shares, Forfeited	-22,870		-67,700	-100,900	'
Number of Option Shares, Expired	'		'	-342,640	'
Number of Option Shares, Outstanding	723,661		1,320,819	1,810,650	'
Number of Options Shares, Exercisable at December 31, 2013	388,521		'	'	'
Weighted Average Exercise Price, Outstanding	$19.92		$21.46	$21.70	'
Weighted Average Exercise Price, Granted	'		'	$23.17	'
Weighted Average Exercise Price, Exercised	$23.04		$19.13	$11.39	'
Weighted Average Exercise Price, Forfeited	$19.36		$22.61	$22.37	'
Weighted Average Exercise Price, Expired	'		'	$26.87	'
Weighted Average Exercise Price, Reduction For Cash Dividend	($2)		($2)	'	'
Weighted Average Exercise Price, Outstanding	$15.46		$19.92	$21.46	'
Weighted Average Exercise Price, Exercisable	$13.64		'	'	'
[1]	The aggregate intrinsic value for option shares outstanding and option shares exercisable is $25.9 million and $14.6 million, respectively. The weighted average remaining term for option shares outstanding and option shares exercisable is 2.7 years and 2.2 years, respectively. Recorded in selling, general and administrative expense in the Consolidated Statements of Operations.

Stockholders_Equity_Schedule_E

Stockholders' Equity (Schedule Exercise Of Stock Options) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity [Abstract]	'	'	'
Intrinsic value of stock options exercised	$9,062	$4,838	$1,079
Cash receipts upon the exercise of stock options	13,231	8,075	997
Income tax benefits from the exercise of stock options	3,473	1,852	422
Grant date fair value of stock options that vested	$2,252	$2,814	$3,207

Stockholders_Equity_Summary_Of

Stockholders' Equity (Summary Of Stock Options Outstanding) (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Options Shares Outstanding	723,661	[1]
Option Shares Exercisable	388,521	[1]
Aggregate intrinsic value, option shares outstanding	$25.90
Aggregate intrinsic value, option shares exercisable	$14.60
Weighted average remaining term, option shares outstanding	'2 years 8 months 12 days
Weighted average remaining term, option shares exercisable	'2 years 2 months 12 days
$6.09 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$6.09
Options Shares Outstanding	70,200
Remaining Life in Years	'10 months 24 days
Option Shares Exercisable	70,200
$7.53 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$7.53
Options Shares Outstanding	400
Remaining Life in Years	'10 months 24 days
Option Shares Exercisable	400
$8.72 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$8.72
Options Shares Outstanding	37,500
Remaining Life in Years	'1 year
Option Shares Exercisable	37,500
$15.49 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$15.49
Options Shares Outstanding	131,181
Remaining Life in Years	'1 year 10 months 24 days
Option Shares Exercisable	94,281
$15.67 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$15.67
Options Shares Outstanding	252,700
Remaining Life in Years	'2 years 10 months 24 days
Option Shares Exercisable	139,100
$19.17 [Member]	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]	'
Exercise Price	$19.17
Options Shares Outstanding	231,680
Remaining Life in Years	'3 years 10 months 24 days
Option Shares Exercisable	47,040
[1]	The aggregate intrinsic value for option shares outstanding and option shares exercisable is $25.9 million and $14.6 million, respectively. The weighted average remaining term for option shares outstanding and option shares exercisable is 2.7 years and 2.2 years, respectively. Recorded in selling, general and administrative expense in the Consolidated Statements of Operations.

Stockholders_Equity_Schedule_O2

Stockholders' Equity (Schedule Of Deferred Stock Units Transactions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Outstanding	613,754	369,133	266,216
Issued	32,462	23,713	79,714
Granted	140,461	282,925	53,450
Dividend equivalents	'	34,568	'
Forfeited	-4,505	'	-2,660
Exercised	-89,211	-96,585	-27,587
Outstanding	692,961	613,754	369,133
Stock Price, Granted	'	'	$23.17
Stock Price, Dividend equivalent	'	$33.32	'
Stock Price, Forfeited	$30.50	'	'
Minimum [Member]	'	'	'
Stock Price, Outstanding	$6.16	$5.50	$5.50
Stock Price, Issued	$33.84	$24.53	$18.67
Stock Price, Granted	$36.58	$26.54	'
Stock Price, Forfeited	'	'	$20.89
Stock Price, Exercised	$20.20	$5.50	$6.16
Stock Price, Outstanding	$6.16	$6.16	$5.50
Maximum [Member]	'	'	'
Stock Price, Outstanding	$33.32	$40.68	$40.68
Stock Price, Issued	$48.53	$32.07	$25.48
Stock Price, Granted	$50.85	$30.50	'
Stock Price, Forfeited	'	'	$23.49
Stock Price, Exercised	$30.65	$40.68	$25.06
Stock Price, Outstanding	$50.85	$33.32	$40.68

Stockholders_Equity_Schedule_O3

Stockholders' Equity (Schedule Of Restricted Stock Grants) (Details) (Restricted Stock [Member], USD $)	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Granted	$17,885	$29,841	$36,260
Stock price	$50.89	$30.50	$23.17
Fair value of stock granted	910	910	840

Stockholders_Equity_Schedule_O4

Stockholders' Equity (Schedule Of Computation Of Basic And Diluted Earnings Per Share) (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders' Equity [Abstract]	'	'	'
Weighted average shares outstanding for basic earnings per share	23,321	22,558	22,267
Common stock equivalents pertaining to stock options and deferred stock units	432	270	177
Weighted average shares outstanding for diluted earnings per share	23,753	22,828	22,444

Stockholders_Equity_Schedule_O5

Stockholders' Equity (Schedule Of Treasury Stock) (Details) (USD $)	12 Months Ended		48 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010
Stockholders' Equity [Abstract]	'	'	'
Purchase of treasury stock, shares	535,135	33,856	501,279
Weighted average price per share	$18.64	$18.44	$18.70
Cost	$10,000	$626	$9,374

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)

9 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

lb

Vacant Owned Facilities [Member]

Vacant Owned Facilities [Member]

Vacant Owned Facilities [Member]

Vacant Owned Facilities Classified In Fixed Assets [Member]

Vacant Owned Facilities Classified In Fixed Assets [Member]

Vacant Owned Facilities Classified In Fixed Assets [Member]

Other Intangible Assets [Member]

Vacant Leased Facilities [Member]

Vacant Leased Facilities [Member]

Cost Of Sales [Member]

Cost Of Sales [Member]

property

property

property

Other Intangible Assets [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of deferred compensation invested in life insurance contracts

'

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

Number of years long-term sales growth forecasted over

'4 years

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

Average long-term sales growth forecast, over next 4 years, percent per year

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

Derivative instruments outstanding

'

$0

'

'

'

'

'

'

'

'

'

'

'

'

Derivative asset recorded in prepaid expenses and other current assets

'

'

200,000

'

'

'

'

'

'

'

'

'

'

'

Number of pounds of aluminum settled at loss

'

4,700,000

'

'

'

'

'

'

'

'

'

'

'

'

Amount settled at loss

'

'

'

'

'

'

'

'

'

'

'

'

300,000

'

Number of vacant facilities reopened

'

'

'

2

'

'

'

'

'

'

'

'

'

'

Number of vacant owned facilities classified in fixed assets

'

'

'

'

4

6

'

'

'

'

'

'

'

'

Number of vacant facilities owned that did not exceed their carrying value

'

'

'

2

'

'

'

'

'

'

'

'

'

'

Number of vacant owned facilities with carrying values exceeding fair value

'

'

'

'

5

'

'

'

'

'

'

'

'

'

Number of vacant owned facilities with fair values exceeding carrying value

'

'

'

'

'

6

'

'

'

'

'

'

'

'

Impairment charge

'

'

'

100,000

500,000

0

'

'

'

'

'

'

'

'

Number of facilities a sale agreement has been signed on

'

'

'

1

'

'

'

'

'

'

'

'

'

'

Number of vacant owned properties classified as fixed assets

'

'

'

3

'

'

'

'

'

'

'

'

'

'

Gain on sale of facilities

'

'

'

'

800,000

'

'

'

'

'

'

'

'

'

Estimated combined fair value

'

'

'

'

'

'

3,600,000

'

'

'

'

'

'

'

Combined carrying value

'

'

'

'

'

'

3,200,000

5,000,000

10,000,000

'

'

'

'

'

Number of vacant owned facilities sold at carrying value

'

'

'

1

2

'

'

'

'

'

'

'

'

'

Other intangible assets, carrying value

'

'

'

'

'

'

'

'

'

1,200,000

'

'

'

'

Non-cash impairment charge

'

'

'

'

'

'

'

'

'

1,200,000

'

'

'

1,000,000

Charge due to early termination of leases of vacant facilities

'

'

'

'

'

'

'

'

'

'

$100,000

$200,000

'

'

Fair_Value_Measurements_Assets

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (Recurring [Member], USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Deferred compensation	$6,535	$4,540
Derivative instruments	'	223
Assets	6,535	4,763
Contingent consideration	7,414	11,519
Deferred compensation	9,673	7,015
Liabilities	17,087	18,534
Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Deferred compensation	6,535	4,540
Assets	6,535	4,540
Deferred compensation	9,673	7,015
Liabilities	9,673	7,015
Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Derivative instruments	'	223
Assets	'	223
Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Contingent consideration	7,414	11,519
Liabilities	$7,414	$11,519

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Non-Recurring Losses Recognized Using Fair Value Measurements And The Carrying Value Of Any Assets And Liabilities Measured Using Fair Value Estimates) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Assets, Carrying Value	$7,579	$6,354	$48,420
Assets, Non-Recurring Losses	145	1,751	'
Liabilities, Carrying Value	'	'	399
Liabilities, Non-Recurring Losses	'	50	203
Vacant Leased Facilities [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Liabilities, Carrying Value	'	'	399
Liabilities, Non-Recurring Losses	'	50	203
Vacant Owned Facilities [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Assets, Carrying Value	3,197	5,009	10,031
Assets, Non-Recurring Losses	145	523	'
Other Intangible Assets [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Assets, Non-Recurring Losses	'	1,228	'
Net Assets Of Acquired Businesses [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Assets, Carrying Value	$4,382	$1,345	$38,389

Quarterly_Results_Of_Operation2

Quarterly Results Of Operations (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Net sales	$224,947	$250,851	$287,192	$252,586	$200,234	$226,323	$251,014	$223,552	$1,015,576	[1]	$901,123	[1]	$681,166	[1]
Gross profit	47,959	56,126	61,433	47,591	35,871	41,542	46,423	44,823	213,109		168,659		139,721
Income before income taxes	16,100	22,754	25,623	13,470	6,759	14,832	18,912	17,299	77,947		57,802		48,256
Net income	$11,077	$14,805	$15,865	$8,372	$4,745	$9,771	$11,708	$11,116	$50,119		$37,340		$30,059
Net income per common share, Basic	$0.47	$0.63	$0.68	$0.36	$0.21	$0.43	$0.52	$0.50	$2.15		$1.66		$1.35
Net income per common share, Diluted	$0.46	$0.62	$0.67	$0.36	$0.21	$0.43	$0.52	$0.49	$2.11		$1.64		$1.34
Stock market price, High	$54.21	$45.54	$41.25	$38.67	$33.32	$30.86	$30.02	$29.84	$54.21		$33.32		'
Stock market price, Low	$45.86	$39.60	$34.13	$33.34	$29.48	$25.82	$25.83	$24.67	$33.34		$24.67		'
Close (at end of quarter)	$51.20	$45.54	$39.32	$36.31	$32.25	$30.21	$27.85	$27.31	$51.20		$32.25		'
[1]	Thor Industries, Inc., a customer of the RV Segment, accounted for 31 percent, 34 percent and 36 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 28 percent, 27 percent and 27 percent of the Company's consolidated net sales for the years ended December 31, 2013, 2012 and 2011, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2013, 2012 and 2011.