Generac (GNRC) 10-K 27 Feb 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 20, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	GENERAC HOLDINGS INC.
Document Type	10-K
Current Fiscal Year End Date	-19
Entity Common Stock, Shares Outstanding		69,093,775
Entity Public Float			$3,302,158,395
Amendment Flag	FALSE
Entity Central Index Key	1474735
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$189,761	$150,147
Restricted cash		6,645
Accounts receivable, less allowance for doubtful accounts of $2,275 at December 31, 2014 and $2,658 at December 31, 2013	189,107	164,907
Inventories	319,385	300,253
Deferred income taxes	22,841	26,869
Prepaid expenses and other assets	9,384	5,358
Total current assets	730,478	654,179
Property and equipment, net	168,821	146,390
Customer lists, net	41,002	42,764
Patents, net	56,894	62,418
Other intangible assets, net	4,298	4,447
Trade names, net	182,684	173,196
Goodwill	635,565	608,287
Deferred financing costs, net	16,243	20,051
Deferred income taxes	46,509	85,104
Other assets	48	1,369
Total assets	1,882,542	1,798,205
Current liabilities:
Short-term borrowings	5,359	9,575
Accounts payable	132,248	109,238
Accrued wages and employee benefits	17,544	26,564
Other accrued liabilities	84,814	92,997
Current portion of long-term borrowings and capital lease obligations	557	12,471
Total current liabilities	240,522	250,845
Long-term borrowings and capital lease obligations	1,082,101	1,175,349
Other long-term liabilities	70,120	54,940
Total liabilities	1,392,743	1,481,134
Stockholders’ equity:
Common stock, par value $0.01, 500,000,000 shares authorized, 69,122,271 and 68,767,367 shares issued at December 31, 2014 and 2013, respectively	691	688
Additional paid-in capital	434,906	421,672
Treasury stock, at cost, 198,312 and 163,458 shares at December 31, 2014 and 2013, respectively	-8,341	-6,571
Excess purchase price over predecessor basis	-202,116	-202,116
Retained earnings	280,426	105,813
Accumulated other comprehensive loss	-15,767	-2,415
Total stockholders’ equity	489,799	317,071
Total liabilities and stockholders’ equity	$1,882,542	$1,798,205

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowance for doubtful accounts (in Dollars)	$2,275	$2,658
Common stock, par value (in Dollars per share)	$0.01	$0.01
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	69,122,271	68,767,367
Treasury stock, shares	198,312	163,458

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$1,460,919	$1,485,765	$1,176,306
Costs of goods sold	944,700	916,205	735,906
Gross profit	516,219	569,560	440,400
Operating expenses:
Selling and service	120,408	107,515	101,448
Research and development	31,494	29,271	23,499
General and administrative	54,795	55,490	46,031
Amortization of intangibles	21,024	25,819	45,867
Gain on remeasurement of contingent consideration	-4,877
Total operating expenses	222,844	218,095	216,845
Income from operations	293,375	351,465	223,555
Other (expense) income:
Interest expense	-47,215	-54,435	-49,114
Investment income	130	91	79
Loss on extinguishment of debt	-2,084	-15,336	-14,308
Gain on change in contractual interest rate	16,014
Costs related to acquisitions	-396	-1,086	-1,062
Other, net	-1,462	-1,983	-2,798
Total other expense, net	-35,013	-72,749	-67,203
Income before provision for income taxes	258,362	278,716	156,352
Provision for income taxes	83,749	104,177	63,129
Net income	174,613	174,539	93,223
Net income per common share - basic: (in Dollars per share)	$2.55	$2.56	$1.38
Weighted average common shares outstanding - basic: (in Shares)	68,538,248	68,081,632	67,360,632
Net income per common share - diluted: (in Dollars per share)	$2.49	$2.51	$1.35
Weighted average common shares outstanding - diluted: (in Shares)	70,171,044	69,667,529	69,193,138
Dividends declared per share (in Dollars per share)	$0	$5	$6
Other comprehensive income (loss):
Net current-period other comprehensive income (loss)	-13,352	12,081	861
Comprehensive income	161,261	186,620	94,084
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Interest Rate Swap [Member]
Other comprehensive income (loss):
Net current-period other comprehensive income (loss)		2,381	2,082
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Other comprehensive income (loss):
Net current-period other comprehensive income (loss)	-1,420	774	365
Accumulated Translation Adjustment [Member]
Other comprehensive income (loss):
Net current-period other comprehensive income (loss)	-3,082	1,238	-34
Accumulated Defined Benefit Plans Adjustment [Member]
Other comprehensive income (loss):
Net current-period other comprehensive income (loss)	($8,850)	$7,688	($1,552)

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Excess Purchase Price Over Predecessor Basis [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
In Thousands, except Share data
Balance at Dec. 31, 2011	$676	$1,142,701		($202,116)	($157,015)	($15,357)	$768,889
Balance (in Shares) at Dec. 31, 2011	67,652,812
Unrealized gain (loss) on derivatives						365	365
Amortization of unrealized loss on interest rate swaps						2,082	2,082
Foreign currency translation adjustment						-34	-34
Common stock issued under equity incentive plans,	7	-6,431					-6,424
Common stock issued under equity incentive plans, shares (in Shares)	643,148
Excess tax benefits from equity awards		4,588					4,588
Share-based compensation		10,780					10,780
Dividends declared		-408,289					-408,289
Pension liability adjustment						-1,552	-1,552
Net income (loss)					93,223		93,223
Balance at Dec. 31, 2012	683	743,349		-202,116	-63,792	-14,496	463,628
Balance (in Shares) at Dec. 31, 2012	68,295,960
Unrealized gain (loss) on derivatives						774	774
Amortization of unrealized loss on interest rate swaps						2,381	2,381
Foreign currency translation adjustment						1,238	1,238
Common stock issued under equity incentive plans,	5	-8,587					-8,582
Common stock issued under equity incentive plans, shares (in Shares)	471,407
Treasury stock purchases			-6,571				-6,571
Treasury stock purchases, shares (in Shares)			-163,458
Excess tax benefits from equity awards		11,553					11,553
Share-based compensation		12,368					12,368
Dividends declared		-337,011			-4,934		-341,945
Pension liability adjustment						7,688	7,688
Net income (loss)					174,539		174,539
Balance at Dec. 31, 2013	688	421,672	-6,571	-202,116	105,813	-2,415	317,071
Balance (in Shares) at Dec. 31, 2013	68,767,367		-163,458
Unrealized gain (loss) on derivatives						-1,420	-1,420
Foreign currency translation adjustment						-3,082	-3,082
Common stock issued under equity incentive plans,	3	-10,378					-10,375
Common stock issued under equity incentive plans, shares (in Shares)	354,904
Treasury stock purchases			-1,770				-1,770
Treasury stock purchases, shares (in Shares)			-34,854
Excess tax benefits from equity awards		10,972					10,972
Share-based compensation		12,612					12,612
Dividends declared		28					28
Pension liability adjustment						-8,850	-8,850
Net income (loss)					174,613		174,613
Balance at Dec. 31, 2014	$691	$434,906	($8,341)	($202,116)	$280,426	($15,767)	$489,799
Balance (in Shares) at Dec. 31, 2014	69,122,271		-198,312

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parentheticals) (Accumulated Other Comprehensive Income (Loss) [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized gain on interest rate swaps, tax	($860)	$462	$236
Amortization of unrealized loss on interest rate swaps, tax		109	95
Pension liability adjustment, tax	($5,658)	$5,060	($1,001)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating activities
Net income	$174,613	$174,539	$93,223
Adjustment to reconcile net income to net cash provided by operating activities:
Depreciation	13,706	10,955	8,293
Amortization of intangible assets	21,024	25,819	45,867
Amortization of original issue discount	3,599	2,074	1,598
Amortization of deferred financing costs	3,016	2,698	2,161
Amortization of unrealized loss on interest rate swaps		2,381	2,082
Loss on extinguishment of debt	2,084	15,336	14,308
Gain on change in contractual interest rate	-16,014
Gain on remeasurement of contingent consideration	-4,877
Provision for losses on accounts receivable	672	1,037	204
Deferred income taxes	37,878	82,675	62,429
Loss on disposal of property and equipment	576	370	261
Share-based compensation expense	12,612	12,368	10,780
Net changes in operating assets and liabilities:
Accounts receivable	-2,988	-5,257	-137
Inventories	3,508	-52,488	-31,656
Other assets	2,456	-10,902	-8,416
Accounts payable	15,269	-5,847	-3,898
Accrued wages and employee benefits	-9,405	6,248	3,168
Other accrued liabilities	6,229	9,491	39,915
Excess tax benefits from equity awards	-10,972	-11,553	-4,588
Net cash provided by operating activities	252,986	259,944	235,594
Investing activities
Proceeds from sale of property and equipment	394	80	91
Expenditures for property and equipment	-34,689	-30,770	-22,392
Proceeds from sale of business, net		2,254
Acquisitions of businesses, net of cash acquired	-61,196	-116,113	-47,044
Net cash used in investing activities	-95,491	-144,549	-69,345
Financing activities
Proceeds from short-term borrowings	6,550	16,007	23,018
Proceeds from long-term borrowings		1,200,000	1,455,614
Repayments of short-term borrowings	-26,444	-18,982	-23,000
Repayments of long-term borrowings and capital lease obligations	-94,035	-901,184	-1,175,124
Payment of debt issuance costs	-4	-22,376	-25,691
Cash dividends paid	-902	-343,429	-404,332
Taxes paid related to the net share settlement of equity awards	-12,181	-15,020	-6,425
Excess tax benefits from equity awards	10,972	11,553	4,588
Proceeds from exercise of stock options	21	32
Net cash used in financing activities	-116,023	-73,399	-151,352
Effect of exchange rate changes on cash and cash equivalents	-1,858	128
Net increase in cash and cash equivalents	39,614	42,124	14,897
Cash and cash equivalents at beginning of period	150,147	108,023	93,126
Cash and cash equivalents at end of period	189,761	150,147	108,023
Cash paid during the period
Interest	42,592	55,828	33,076
Income taxes	$34,283	$25,821	$2,811

Note_1_Description_of_Business

Note 1 - Description of Business	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Business Description and Basis of Presentation [Text Block]	1	Description of Business
	Generac Holdings Inc. (the Company) owns all of the common stock of Generac Acquisition Corp. (GAC), which in turn, owns all of the common stock of Generac Power Systems, Inc. (the Subsidiary and the Borrower). The Company is a leading designer and manufacturer of a wide range of power generation equipment and other engine powered products serving the residential, light-commercial, industrial, oil & gas, and construction markets. Generac’s power products are available globally through a broad network of independent dealers, distributors, retailers, wholesalers and equipment rental companies, as well as sold direct to certain end user customers.
	Over the past several years, we have executed a number of acquisitions that support our strategic plan. A summary of these acquisitions include the following:
		●	On October 3, 2011, we acquired substantially all the assets of Magnum Products (Magnum), a supplier of generator powered light towers and mobile generators for a variety of industries and specialties. The Magnum business is a strategic fit for us as it provides diversification, with the introduction of new engine powered products, distribution channels and end markets.
		●	On December 8, 2012, we acquired the equity of Ottomotores UK and its affiliates (Ottomotores), with operations in Mexico City, Mexico and Curitiba, Brazil. Ottomotores is a leading manufacturer in the Mexican market for industrial diesel gensets and is a market participant throughout all of Latin America.
		●	On August 1, 2013, we acquired the equity of Tower Light SRL and its wholly-owned subsidiaries (Tower Light). Headquartered outside Milan, Italy, Tower Light is a leading developer and supplier of mobile light towers throughout Europe, the Middle East and Africa.
		●	On November 1, 2013, we purchased the assets of Baldor Electric Company’s generator division (Baldor Generators). Baldor Generators offers a complete line of power generation equipment throughout North America with power output up to 2.5MW.
		●	On September 2, 2014, we acquired the equity of Pramac America LLC (Powermate), resulting in the ownership of the Powermate trade name and the right to license the DeWalt brand name for certain residential engine powered tools. The transaction also included working capital associated with these products. This acquisition helps to expand the Generac brand portfolio across its residential product platform and increases its product offering in the portable generator category.
		●	On October 1, 2014, we acquired MAC, Inc. and its related entities (MAC). MAC is a leading manufacturer of premium-grade commercial and industrial mobile heaters within the United States and Canada. The acquisition expands the Company’s portfolio of mobile power products and provides increased access to the oil & gas market.

Note_2_Significant_Accounting_

Note 2 - Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	2. Significant Accounting Policies
	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany amounts and transactions have been eliminated in consolidation.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.
	Restricted Cash
	Restricted cash represents cash transferred to an escrow account for the settlement of certain earn-out obligations associated with the Tower Light acquisition. See Note 3, “Acquisitions,” to the consolidated financial statements for additional details.
	Concentration of Credit Risk
	The Company maintains the majority of its cash in one commercial bank in multiple operating and investment accounts. Balances on deposit are insured by the Federal Deposit Insurance Corporation (FDIC) up to specified limits. Balances in excess of FDIC limits are uninsured.
	One customer accounted for approximately 9% and 11% of accounts receivable at December 31, 2014 and 2013, respectively. No one customer accounted for greater than 8%, 6% and 7%, of net sales during the years ended December 31, 2014, 2013, or 2012, respectively.
	Accounts Receivable
	Receivables are recorded at their face value amount less an allowance for doubtful accounts. The Company estimates and records an allowance for doubtful accounts based on specific identification and historical experience. The Company writes off uncollectible accounts against the allowance for doubtful accounts after all collection efforts have been exhausted. Sales are generally made on an unsecured basis.
	Inventories
	Inventories are stated at the lower of cost or market, with cost determined generally using the first-in, first-out method.
	Property and Equipment
	Property and equipment are recorded at cost and are being depreciated using the straight-line method over the estimated useful lives of the assets, which are summarized below (in years). Costs of leasehold improvements are amortized over the lesser of the term of the lease (including renewal option periods) or the estimated useful lives of the improvements.
	Land improvements	15-Oct
	Buildings and improvements	Oct-40
	Leasehold improvements	20-Jul
	Machinery and equipment	20-May
	Dies and tools	10-Mar
	Vehicles	5-Mar
	Office equipment	10-Mar
	Debt Issuance Costs
	Direct and incremental costs incurred in connection with the issuance of long-term debt are capitalized and amortized to interest expense over the terms of the related credit agreements. Debt discounts incurred in connection with the issuance of long-term debt are deferred and recorded as a reduction of outstanding debt and amortized to interest expense using the catch-up approach of the effective interest method over the terms of the related credit agreements. Approximately $6,615, $4,772, and $3,759 of deferred financing costs and original issue discount were amortized to interest expense during fiscal years 2014, 2013 and 2012, respectively. Excluding the impact of any future long-term debt issuances or prepayments, estimated amortization expense for the next five years is as follows: 2015, $7,012; 2016, $7,302; 2017, $7,550; 2018, $7,505; 2019, $7,534.
	Goodwill and Other Indefinite-Lived Intangible Assets
	Goodwill represents the excess of the purchase price over fair value of identifiable net assets acquired from business acquisitions. Goodwill is not amortized, but is reviewed for impairment on an annual basis and between annual tests if indicators of impairment are present. The Company evaluates goodwill for impairment annually on October 31 or more frequently when an event occurs or circumstances change that indicates the carrying value may not be recoverable. The Company has the option to assess goodwill for impairment by first performing a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the Company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then further goodwill impairment testing is not required to be performed. If the Company determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company is required to perform a two-step goodwill impairment test. In the first step, the fair value of the reporting unit is compared to its book value including goodwill. If the fair value of the reporting unit is in excess of its book value, the related goodwill is not impaired and no further analysis is necessary. If the fair value of the reporting unit is less than its book value, there is an indication of potential impairment and a second step is performed. When required, the second step of testing involves calculating the implied fair value of goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill recognized in a business combination, which is the excess of the fair value of the reporting unit determined in step one over the fair value of its net assets and identifiable intangible assets as if the reporting unit had been acquired. If the carrying value of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. For reporting units with a negative book value (i.e., excess of liabilities over assets), qualitative factors are evaluated to determine whether it is necessary to perform the second step of the goodwill impairment test.
	Other indefinite-lived intangible assets consist of trade names. The Company tests the carrying value of these trade names by comparing the assets’ fair value to its carrying value. Fair value is measured using a relief-from-royalty approach, which assumes the fair value of the trade name is the discounted cash flows of the amount that would be paid had the Company not owned the trade name and instead licensed the trade name from another company. The Company conducts its annual impairment test for indefinite-lived intangible assets on October 31 of each year.
	The Company performed the required annual impairment tests for fiscal years 2014, 2013 and 2012 and found no impairment of goodwill or indefinite-lived trade names. There can be no assurance that future impairment tests will not result in a charge to earnings.
	Impairment of Long-Lived Assets
	The Company periodically evaluates the carrying value of long-lived assets (excluding goodwill and trade names). Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the sum of the expected future undiscounted cash flows is less than the carrying amount of an asset, a loss is recognized for the difference between the fair value and carrying value of the asset. Such analyses necessarily involve significant judgments.
	Income Taxes
	The Company is a C Corporation and therefore accounts for income taxes pursuant to the liability method. Accordingly, the current or deferred tax consequences of a transaction are measured by applying the provision of enacted tax laws to determine the amount of taxes payable currently or in future years. Deferred income taxes are provided for temporary differences between the income tax bases of assets and liabilities and their carrying amounts for financial reporting purposes. In assessing the realizability of deferred tax assets, the Company considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the years in which those temporary differences become deductible. The Company considers taxable income in prior carryback years, the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies, as appropriate, in making this assessment.
	Revenue Recognition
	Sales, net of estimated returns and allowances, are recognized upon shipment of product to the customer, which is generally when title passes, the Company has no further obligations, and the customer is required to pay. The Company, at the request of certain customers, will warehouse inventory billed to the customer but not delivered. Unless all revenue recognition criteria have been met, the Company does not recognize revenue on these transactions until the customers take possession of the product. In these cases, the funds collected on product warehoused for these customers are recorded as a customer advance until the customer takes possession of the product and the Company’s obligation to deliver the goods is completed. Customer advances are included in accrued liabilities in the consolidated balance sheets.
	The Company provides for certain estimated sales promotions, discounts and incentive expenses which are recognized as a reduction of sales.
	Shipping and Handling Costs
	Shipping and handling costs billed to customers are included in net sales, and the related costs are included in cost of goods sold in the consolidated statements of comprehensive income.
	Advertising and Co-Op Advertising
	Expenditures for advertising, included in selling and service expenses in the consolidated statements of comprehensive income, are expensed as incurred. Total expenditures for advertising were $32,352, $19,910, and $13,360 for the years ended December 31, 2014, 2013, and 2012, respectively.
	Research and Development
	The Company expenses research and development costs as incurred. Total expenditures incurred for research and development were $31,494, $29,271, and $23,499 for the years ended December 31, 2014, 2013 and 2012, respectively.
	Foreign Currency Translation and Transactions
	Balance sheet amounts for non-U.S. Dollar functional currency businesses are translated into dollars at the rates of exchange in effect at fiscal year-end. Income and expenses incurred in a foreign currency are translated at the average rates of exchange in effect during the year. The related translation adjustments are made directly to accumulated other comprehensive loss, a component of stockholders’ equity, in the consolidated balance sheets. Gains and losses from foreign currency transactions are recognized as incurred in the consolidated statements of comprehensive income.
	Fair Value of Financial Instruments
	The Financial Accounting Standards Board (FASB) Accounting Standards Update (ASC) 820-10, Fair Value Measurement, among other things, defines fair value, establishes a consistent framework for measuring fair value, and expands disclosure for each major asset and liability category measured at fair value on either a recurring basis or nonrecurring basis. ASC 820-10 clarifies that fair value is an exit price, representing the amount that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the pronouncement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	Assets and liabilities measured at fair value are based on the market approach, which are prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.
	The Company believes the carrying amount of its financial instruments (cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued liabilities and short-term borrowings), excluding long-term borrowings, approximates the fair value of these instruments based upon their short-term nature. The fair value of long-term borrowings, including amounts classified as current, which have an aggregate carrying value of $1,080,599 was approximately $1,048,165 (Level 2) at December 31, 2014, as calculated based on independent valuations whose inputs and significant value drivers are observable.
	Use of Estimates
	The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Derivative Instruments and Hedging Activities
	The Company records derivatives in accordance with ASC 815, Derivatives and Hedging, which requires derivative instruments be reported on the consolidated balance sheets at fair value and establishes criteria for designation and effectiveness of hedging relationships. The Company is exposed to market risk such as changes in commodity prices, foreign currencies, and interest rates. The Company does not hold or issue derivative financial instruments for trading purposes.
	Stock-Based Compensation
	Stock-based compensation expense, including stock options and restricted stock awards, is generally recognized on a straight-line basis over the vesting period based on the fair value of awards which are expected to vest. The fair value of all share-based awards is estimated on the date of grant.
	New Accounting Pronouncements
	In May 2014, the FASB issued ASU No 2014-09, Revenue from Contracts with Customers. This guidance is the culmination of the FASB’s joint project with the International Accounting Standards Board to clarify the principles for recognizing revenue. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides a five-step process that entities should follow in order to achieve that core principal. The guidance is effective for the Company in 2017. The guidance can be applied either on a full retrospective basis or on a retrospective basis in which the cumulative effect of initially applying the standard is recognized at the date of initial application. The Company is currently assessing the impact the adoption of this guidance will have on the Company’s results of operations.
	There are several other new accounting pronouncements issued by the FASB. Each of these pronouncements, as applicable, has been or will be adopted by the Company. Management does not believe any of these accounting pronouncements has had or will have a material impact on the Company’s consolidated financial statements.

Note_3_Acquisitions

Note 3 - Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	3. Acquisitions
	Acquisition of MAC
	On October 1, 2014, a subsidiary of the Company acquired MAC for a purchase price, net of cash acquired of $55,690.  Headquartered in Bismarck, North Dakota, MAC is a leading manufacturer of premium-grade commercial and industrial mobile heaters within the United States and Canada. The acquisition expands the Company’s portfolio of mobile power products and provides increased access to the oil & gas market. This acquisition was funded solely by existing cash.
	The Company recorded a preliminary purchase price allocation during the fourth quarter of 2014 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $49,378 of intangible assets, including approximately $25,898 of goodwill, as of the acquisition date. The accompanying consolidated financial statements include the results of MAC from October 1, 2014 through December 31, 2014. The goodwill ascribed to this acquisition is not deductible for tax purposes.
	Acquisition of Tower Light
	On August 1, 2013, a subsidiary of the Company acquired all of the shares of Tower Light for a purchase price, net of cash acquired and inclusive of estimated earn-out payments, of $85,812. Headquartered outside Milan, Italy, Tower Light is a leading developer and supplier of mobile light towers throughout Europe, the Middle East and Africa. Tower Light has built a leading market position in the equipment rental markets by leveraging its broad product offering and strong global distribution network in over 50 countries worldwide.
	The net cash paid at closing was $80,239 and included a cash deposit of $6,645 into an escrow account to fund future earn-out payments required by the purchase agreement, which was recorded as restricted cash on the Company’s consolidated balance sheet as of December 31, 2013. The earn-out payment of $7,641 was finalized during the second quarter of 2014, resulting in a gain of $4,877, which was recorded in the consolidated statement of comprehensive income for the year ended December 31, 2014. The difference between the total escrow deposit and the Company’s final earn-out payment is reflected as an addition to the purchase price. Additionally, the cash paid at closing included an estimate of acquired working capital. This estimate was finalized during third quarter of 2013, resulting in a $300 decrease to the purchase price. The acquisition was funded solely by existing cash.
	The Company recorded a preliminary purchase price allocation during the third quarter of 2013 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $67,900 of intangible assets, including approximately $38,400 of goodwill. Based on revised purchase accounting estimates, an additional $9,328 of goodwill was recorded during the fourth quarter of 2013. The goodwill ascribed to this acquisition is not deductible for tax purposes. The accompanying consolidated financial statements include the results of Tower Light from August 1, 2013 through December 31, 2014.
	Acquisition of Ottomotores
	On December 8, 2012, a subsidiary of the Company acquired all of the shares of Ottomotores. Ottomotores was founded in 1950 and is located in Mexico City, Mexico and Curitiba, Brazil. Ottomotores is a leading manufacturer in the Mexican market for industrial diesel gensets ranging in size from 15kW to 3,250kW and is a market participant throughout all of Latin America.
	The cash paid at closing of $44,769, net of cash acquired, included an estimate of acquired working capital. This estimate was finalized during the second quarter of 2013 to reflect actual working capital acquired as well as cash acquired and debt assumed, resulting in a $6,278 decrease to the purchase price. This acquisition was funded solely by existing cash.
	The Company recorded a preliminary purchase price allocation during the fourth quarter of 2012 based upon its estimates of the fair value of the acquired assets and assumed liabilities. As a result, the Company recorded approximately $16,100 of intangible assets, including approximately $5,050 of goodwill, as of the acquisition date. The purchase price allocation was finalized during the second quarter of 2013, resulting in an additional $2,590 of intangible assets and a $439 decrease to goodwill. The goodwill ascribed to this acquisition is not deductible for tax purposes.
	Management considers these acquisitions to be immaterial for full required disclosure.

Note_4_Derivative_Instruments_

Note 4 - Derivative Instruments and Hedging Activities	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	4. Derivative Instruments and Hedging Activities
	Commodities
	The primary objectives of the commodity risk management activities are to understand and mitigate the impact of potential price fluctuations on the Company’s financial results and its economic well-being. While the Company’s risk management objectives and strategies will be driven from an economic perspective, the Company attempts, where possible and practical, to ensure that the hedging strategies it engages in can be treated as “hedges” from an accounting perspective or otherwise result in accounting treatment where the earnings effect of the hedging instrument provides substantial offset (in the same period) to the earnings effect of the hedged item. Generally, these risk management transactions will involve the use of commodity derivatives to protect against exposure resulting from significant price fluctuations.
	The Company primarily utilizes commodity contracts with maturities of less than eighteen months. These are intended to offset the effect of price fluctuations on actual inventory purchases. Outstanding commodity forward contracts in place to hedge the Company’s projected commodity purchases were as follows:
	As of December 31, 2014:
	Commodity	Trade Date		Effective Date		Notional Amount			Termination Date
	Copper	2-Oct-14		1-Oct-14		$	4,960		31-Dec-15
	Copper	15-Oct-14		1-Nov-14		$	4,637		31-Dec-15
	Copper	1-Dec-14		1-Dec-14		$	8,232		31-Dec-15
	As of December 31, 2013:
	Commodity		Trade Date	Effective Date		Notional Amount			Termination Date
	Copper		21-Jun-13	1-Oct-13		$	2,169		30-Jun-14
	As of December 31, 2012:
	Commodity		Trade Date	Effective Date		Notional Amount			Termination Date
	Copper		29-Oct-12	1-Jan-13		$	3,472		30-Sep-13
	Because these contracts do not qualify for hedge accounting, gains and losses are recorded in cost of goods sold in the Company’s consolidated statements of comprehensive income. Net gains (losses) recognized on such contracts in the consolidated statements of comprehensive income were $(629), $(605) and $386 for the years ended December 31, 2014, 2013, and 2012, respectively.
	Foreign Currencies
	The Company is exposed to foreign currency exchange risk as a result of transactions in other currencies. The Company periodically utilizes foreign currency forward purchase and sales contracts to manage the volatility associated with foreign currency purchases in the normal course of business. Contracts typically have maturities of twelve months or less. There were no foreign currency hedge contracts outstanding during the year ended December 31, 2012. As of December 31, 2014 and 2013, the following foreign currency contracts were outstanding:
	As of December 31, 2014:
	Currency Denomination		Notional Amount
	British Pound Sterling (GBP) to Euro		£	5,000
	As of December 31, 2013:
	Currency Denomination		Notional Amount
	United States Dollar (USD) to Euro		$	650
	British Pound Sterling (GBP) to Euro		£	4,000
	Total net losses recognized in the consolidated statements of comprehensive income for the years ended December 31, 2014 and 2013 were $(149) and $(56), respectively.
	Interest Rate Swaps
	As of May 30, 2012, the date of a previous credit agreement refinancing, the Company had four interest rate swap agreements outstanding. Due to the incorporation of a new interest rate floor provision in the then new credit agreement, which constituted a change in critical terms, the Company concluded that as of May 30, 2012, the then outstanding swaps would no longer be highly effective in achieving offsetting changes in cash flows during the periods the hedges were designated. As a result, the Company was required to de-designate the four outstanding hedges as of May 30, 2012. Beginning May 31, 2012, the effective portion of the swaps prior to the change (i.e. amounts previously recorded in Accumulated Other Comprehensive Loss) were amortized into interest expense over the period of the originally designated hedged transactions which had various termination dates through October 2013. Future changes in fair value of these swaps were immediately recognized in the consolidated statements of comprehensive income as interest expense.
	On October 23, 2013, the Company entered into two interest rate swap agreements, and on May 19, 2014, the Company entered into one interest rate swap agreement. The Company formally documented all relationships between interest rate hedging instruments and hedged items, as well as its risk-management objectives and strategies for undertaking various hedge transactions. These interest rate swap agreements qualify as cash flow hedges. For derivatives that are designated and qualify as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive loss. The cash flows of the swaps are recognized as adjustments to interest expense each period.  The ineffective portion of the derivatives’ change in fair value, if any, is immediately recognized in earnings. The Company assesses on an ongoing basis whether derivatives used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items.  The effective dates of the swaps are July 1, 2014 with a notional amount of $100,000 each, a fixed LIBOR rate of 1.7370%, 1.7420% and 1.6195%, including a LIBOR floor of 0.75%, and all expire on July 1, 2018.
	The following table presents the fair value of the Company’s derivative assets (liabilities):
			December 31,				December 31,
			2014				2013
	Interest rate swaps		$	(1,045	)		$	1,236
	Commodity contracts			(515	)			69
	Foreign currency contracts			(149	)			56
	The fair value of the interest rate swaps, and the commodity and foreign currency contracts are included in other accrued liabilities and other assets in the consolidated balance sheets as of December 31, 2014 and 2013, respectively. Excluding the impact of credit risk, the fair value of the derivative contracts as of December 31, 2014 and 2013 is a liability of $(1,727) and an asset of $1,385, respectively, which represents the amount the Company would need to pay or would receive to exit the agreements on those dates.
	The following presents the impact of interest rate swaps, commodity contracts and foreign currency contracts on the consolidated statement of comprehensive income for the years ended December 31, 2014, 2013 and 2012:
			Amount of Gain (Loss)									Location of Gain	Amount of Loss Reclassified								Amount of Gain (Loss)
			Recognized in AOCI for the									(Loss) Recognized in	from AOCI into Net Income for								Recognized in Net Income on
			Year Ended December 31,									the Net Income	the Year Ended December 31,								Hedges (Ineffective Portion) for
												(Loss) on Ineffective									the Year Ended December 31,
			2014				2013			2012		Portion of Hedges	2014		2013			2012			2014			2013			2012
	Derivatives designated as hedging instruments
	Interest rate swaps (1)		$	(1,420	)		$	774		$	365	Interest Expense	$	-	$	-		$	-		$	-		$	-		$	-
	Derivatives not designated as hedging instruments
	Interest rate swaps (2)		$	-			$	-		$	-	Interest Expense	$	-	$	(2,381	)	$	(2,082	)	$	-		$	2,973		$	1,695
	Commodity and foreign currency contracts		$	-			$	-		$	-	Cost of goods sold	$	-	$	-		$	-		$	(778	)	$	(661	)	$	386
	-1	Amounts recorded for the year ended December 31, 2012 relate to the interest rate swap agreements outstanding prior to May 30, 2012, the date the hedging relationships for these agreements were terminated.
	-2	Amounts recorded for the years ended December 31, 2013 and 2012 relate to interest rate swap agreements outstanding as of May 30, 2012, the date the hedging relationships for these agreements were terminated.

Note_5_Fair_Value_Measurements

Note 5 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	5.  Fair Value Measurements
	Assets (liabilities) measured at fair value on a recurring basis are as follows:
		Fair Value Measurement Using
		Total			Quoted Prices in Active		Significant
		31-Dec-14			Markets for Identical		Other Observable Inputs
					Contracts (Level 1)		(Level 2)
	Interest rate swaps	$	(1,045	)	$	-	$	(1,045	)
	Commodity contracts	$	(515	)	$	-	$	(515	)
	Foreign currency contracts	$	(149	)	$	-	$	(149	)
		Fair Value Measurement Using
		Total			Quoted Prices in Active		Significant
		31-Dec-13			Markets for Identical		Other Observable Inputs
					Contracts (Level 1)		(Level 2)
	Interest rate swaps	$	1,236		$	-	$	1,236
	Commodity contracts	$	69		$	-	$	69
	Foreign currency contracts	$	56		$	-	$	56
	The valuation techniques used to measure the fair value of derivative contracts classified as Level 2, all of which have counterparties with high credit ratings, were valued based on quoted market prices or model driven valuations using significant inputs derived from or corroborated by observable market data. The fair value of derivative contracts above considers the Company’s credit risk in accordance with ASC 820-10.

Note_6_Accumulated_Other_Compr

Note 6 - Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Comprehensive Income (Loss) Note [Text Block]	6. Accumulated Other Comprehensive Loss
	The following presents a tabular disclosure of changes in accumulated other comprehensive income (loss) during the years ended December 31, 2014 and 2013, net of tax:
			Foreign			Defined				Unrealized				Total
			Currency			Benefit				Gain (Loss)
			Translation			Pension Plan				on Cash Flow
			Adjustments							Hedges
	Beginning Balance - January 1, 2014		$	1,204		$	(4,393	)		$	774			$	(2,415	)
	Other comprehensive loss before reclassifications			(3,082	)		(8,922	)			(1,420	)			(13,424	)
	Amounts reclassified from accumulated other comprehensive loss			-			72		(1)		-				72
	Net current-period other comprehensive loss			(3,082	)		(8,850	)			(1,420	)			(13,352	)
	Ending Balance - December 31, 2014		$	(1,878	)	$	(13,243	)		$	(646	)		$	(15,767	)
			Foreign			Defined				Unrealized				Total
			Currency			Benefit				Gain (Loss)
			Translation			Pension Plan				on Cash Flow
			Adjustments							Hedges
	Beginning Balance - January 1, 2013		$	(34	)	$	(12,081	)		$	(2,381	)		$	(14,496	)
	Other comprehensive income before reclassifications			1,238			6,994				774				9,006
	Amounts reclassified from accumulated other comprehensive loss			-			694		(2)		2,381		(3)		3,075
	Net current-period other comprehensive income			1,238			7,688				3,155				12,081
	Ending Balance - December 31, 2013		$	1,204		$	(4,393	)		$	774			$	(2,415	)
		-1	Represents the actuarial losses of $(106), net of tax benefit of $34, included in the computation of net periodic pension cost. See Note 14, “Benefit Plans,” to the consolidated financial statements for additional information.
		-2	Represents the actuarial losses of $(1,108), net of tax benefit of $414, included in the computation of net periodic pension cost. See Note 14, “Benefit Plans,” to the consolidated financial statements for additional information.
		-3	Represents amortization of unrealized losses on interest rate swaps to interest expense on the consolidated statements of comprehensive income of $(2,490), net of tax benefit of $109. See Note 11, “Credit Agreements,” to the consolidated financial statements for additional information.

Note_7_Segment_Reporting

Note 7 - Segment Reporting	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	7. Segment Reporting
	The Company operates in and reports as a single operating segment, which is the design and manufacture of a wide range of power products. Net sales are predominantly generated through the sale of generators and other engine powered products through various distribution channels. The Company manages and evaluates its operations as one segment primarily due to similarities in the nature of the products, production and design processes, and methods of distribution. The Company’s sales in the United States represent approximately 84%, 88%, and 93% of total sales for the years ended December 31, 2014, 2013 and 2012, respectively. Approximately 91%, 90% and 94% of the Company’s identifiable long-lived assets are located in the United States as of December 31, 2014, 2013 and 2012, respectively.
	The Company's product offerings consist primarily of power products with a range of power output geared for varying end customer uses. Residential products and commercial & industrial products are each a similar class of products based on similar power output and end customer usage. The breakout of net sales between residential, commercial & industrial, and other products is as follows:
		Year Ended December 31,
		2014		2013		2012
	Residential products	$	722,206	$	843,727	$	705,444
	Commercial & industrial products		652,216		569,890		410,341
	Other		86,497		72,148		60,521
	Total	$	1,460,919	$	1,485,765	$	1,176,306

Note_8_Balance_Sheet_Details

Note 8 - Balance Sheet Details	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Supplemental Balance Sheet Disclosures [Text Block]	8. Balance Sheet Details
	Inventories consist of the following:
		December 31,
		2014			2013
	Raw material	$	184,407		$	183,787
	Work-in-process		8,798			9,620
	Finished goods		135,567			113,404
	Reserves for excess and obsolescence		(9,387	)		(6,558	)
	Total	$	319,385		$	300,253
	As of December 31, 2014 and 2013, inventories totaling $12,497 and $6,504, respectively, were on consignment at customer locations.
	Property and equipment consists of the following:
		December 31,
		2014			2013
	Land and improvements	$	7,803		$	7,416
	Buildings and improvements		102,254			96,161
	Machinery and equipment		65,240			54,847
	Dies and tools		16,897			17,071
	Vehicles		1,383			1,979
	Office equipment		21,990			17,304
	Leasehold improvements		2,535			2,229
	Construction in progress		20,120			9,724
	Gross property and equipment		238,222			206,731
	Accumulated depreciation		(69,401	)		(60,341	)
	Total	$	168,821		$	146,390

Note_9_Goodwill_and_Intangible

Note 9 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	9. Goodwill and Intangible Assets
	The changes in the carrying amount of goodwill for the years ended December 31, 2014 and 2013 are as follows:
		Year Ended December 31, 2014								Year Ended December 31, 2013
		Gross		Accumulated Impairment			Net			Gross			Accumulated Impairment			Net
	Balance at beginning of year	$	1,111,480	$	(503,193	)	$	608,287		$	1,056,136		$	(503,193	)	$	552,943
	Acquisitions of businesses, net		27,278		-		$	27,278			56,605			-		$	56,605
	Sale of business, net		-		-			-			(1,261	)		-			(1,261	)
	Balance at end of year	$	1,138,758	$	(503,193	)	$	635,565		$	1,111,480		$	(503,193	)	$	608,287
	See Note 3, “Acquisitions,” to consolidated financial statements for further information regarding the Company’s acquisitions.
	The following table summarizes intangible assets by major category as of December 31, 2014 and 2013:
		Weighted		2014									2013
		Average
		Amortization		Cost			Accumulated			Net Cost			Cost			Accumulated			Net Cost
		Years					Impairment									Impairment
	Indefinite lived intangible assets
	Trade names			$	192,073		$	(9,389	)	$	182,684		$	182,585		$	(9,389	)	$	173,196
				Cost			Accumulated			Amortized Cost			Cost			Accumulated			Amortized Cost
							Amortization									Amortization
	Finite lived intangible assets
	Trade names		0	$	8,775		$	(8,775	)	$	-		$	8,775		$	(8,775	)	$	-
	Customer lists		8		304,180			(263,178	)		41,002			294,627			(251,863	)		42,764
	Patents		15		121,341			(64,447	)		56,894			118,921			(56,503	)		62,418
	Unpatented technology		13		13,169			(10,435	)		2,734			13,169			(9,064	)		4,105
	Software		8		1,046			(1,037	)		9			1,046			(912	)		134
	Non-compete/other		7		1,961			(406	)		1,555			345			(137	)		208
	Total finite lived intangible assets			$	450,472		$	(348,278	)	$	102,194		$	436,883		$	(327,254	)	$	109,629
	Amortization of intangible assets was $21,024, $25,819 and $45,867 in 2014, 2013 and 2012, respectively. Excluding the impact of any future acquisitions, the Company estimates amortization expense for the next five years will be as follows: 2015, $20,965; 2016, $19,015; 2017, $15,624; 2018, $11,422; 2019, $9,600.

Note_10_Product_Warranty_Oblig

Note 10 - Product Warranty Obligations	12 Months Ended
	Dec. 31, 2014
Product Warranties Disclosures [Abstract]
Product Warranty Disclosure [Text Block]	10. Product Warranty Obligations
	The Company records a liability for product warranty obligations at the time of sale to a customer based upon historical warranty experience. The Company also records a liability for specific warranty matters when they become known and are reasonably estimable. The Company also sells extended warranty coverage for certain product. The sales of extended warranties are recorded as deferred revenue, and we recognize the revenue from sales of extended warranties over the life of the contracts. The Company’s product warranty obligations, including deferred revenue related to extended warranty coverage, are included in other accrued liabilities and other long-term liabilities in the consolidated balance sheets.
	The following is a tabular reconciliation of the product warranty liability, excluding the deferred revenue related to our extended warranty coverage:
		Year Ended December 31,
		2014			2013			2012
	Balance at beginning of year	$	33,734		$	36,111		$	24,643
	Payments		(20,615	)		(18,484	)		(19,801	)
	Provision for warranties issued		22,890			33,707			34,173
	Changes in estimates for pre-existing warranties		(5,100	)		(17,600	)		(2,904	)
	Balance at end of year	$	30,909		$	33,734		$	36,111
	The following is a tabular reconciliation of the deferred revenue related to extended warranty coverage:
		Year Ended December 31,
		2014			2013			2012
	Balance at beginning of year	$	23,092		$	13,474		$	9,737
	Deferred revenue on extended warranty contracts sold		7,343			11,998			5,547
	Amortization of deferred revenue on extended warranty contracts		(3,242	)		(2,380	)		(1,810	)
	Balance at end of year	$	27,193		$	23,092		$	13,474
	Product warranty obligations and warranty related deferred revenues are included in the balance sheets as follows:
		December 31,
		2014			2013
	Product warranty liability
	Current portion - other accrued liabilities	$	24,143		$	26,080
	Long-term portion - other long-term liabilities		6,766			7,654
	Total	$	30,909		$	33,734
	Deferred revenue related to extended warranty
	Current portion - other accrued liabilities	$	4,519		$	3,325
	Long-term portion - other long-term liabilities		22,674			19,767
	Total	$	27,193		$	23,092

Note_11_Credit_Agreements

Note 11 - Credit Agreements	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	11. Credit Agreements
	The revolving credit facilities and credit agreements discussed below were outstanding for the periods described below. The Company refinanced this debt on February 9, 2012, amended and restated its credit agreements on May 30, 2012, and further amended and restated its credit agreements on May 31, 2013.
	Short-term borrowings are included in the balance sheets as follows:
		December 31,
		2014			2013
	ABL facility	$	-		$	-
	Other lines of credit, as described below		5,359			9,575
	Total	$	5,359		$	9,575
	Long-term borrowings are included in the balance sheets as follows:
		December 31,
		2014			2013
	Term loan	$	1,104,000		$	1,197,000
	Discount on debt		(23,861	)		(12,735	)
	Capital lease obligation		2,059			2,529
	Other		460			1,026
	Total		1,082,658			1,187,820
	Less current portion of debt		389			12,286
	Less current portion of capital lease obligation		168			185
	Total	$	1,082,101		$	1,175,349
	Maturities of long-term borrowings outstanding at December 31, 2014, are as follows:
	Year
	2015		$	557
	2016			254
	2017			185
	2018			191
	After 2018			1,105,332
	Total		$	1,106,519
	On February 9, 2012, a subsidiary of the Company entered into a credit agreement (Credit Agreement) with certain commercial banks and other lenders. The Credit Agreement provided for borrowings under a $150,000 revolving credit facility, a $325,000 tranche A term loan facility and a $250,000 tranche B term loan facility. The revolving credit facility and tranche A term loan facility were scheduled to mature in February 2017 and the tranche B term loan facility was scheduled to mature in February 2019. Proceeds received by the Company from loans made under the Credit Agreement were used for general corporate purposes and to repay in full all outstanding borrowings under the former credit agreement.
	On May 30, 2012, the Borrower amended and restated its then existing Credit Agreement by entering into a new credit agreement (Term Loan Credit Agreement) and a new revolving credit agreement (ABL Credit Agreement) with certain commercial banks and other lenders. The Term Loan Credit Agreement provided for a $900,000 term loan B credit facility and a $125,000 uncommitted incremental term loan facility (Term Loan). The ABL Credit Agreement provided for borrowings under a $150,000 senior secured ABL revolving credit facility. The Term Loan Credit Agreement was scheduled to mature in May 2018 and the ABL Credit Agreement was scheduled to mature in May 2017. Proceeds received by the Company from loans under the Term Loan Credit Agreement, together with cash on hand, were used to repay amounts outstanding under the Company’s previous Credit Agreement and pay a special cash dividend of $6.00 per share on the Company’s common stock (refer to Note 17, “Special Cash Dividend” to the consolidated financial statements for additional details). The interest rate on the Term Loan was based upon either a base rate plus an applicable margin of 4.00% or adjusted LIBOR rate plus an applicable margin of 5.00%, subject to a LIBOR floor of 1.25%.
	On May 31, 2013, the Borrower amended and restated its then existing Term Loan Credit Agreement by entering into a new term loan credit agreement (New Term Loan Credit Agreement) with certain commercial banks and other lenders. The New Term Loan Credit Agreement provides for a $1,200,000 term loan B credit facility (New Term Loan) and includes a $300,000 uncommitted incremental term loan facility. The New Term Loan Credit Agreement matures on May 31, 2020. Proceeds from the New Term Loan were used to repay amounts outstanding under the Company’s previous Term Loan Credit Agreement and to fund a special cash dividend of $5.00 per share on the Company’s common stock (refer to Note 17, “Special Cash Dividend” to the consolidated financial statements for additional details). Remaining funds from the New Term Loan were used for general corporate purposes and to pay related financing fees and expenses. The New Term Loan is guaranteed by all of the Borrower’s wholly-owned domestic restricted subsidiaries, GAC and the Company, and is secured by associated collateral agreements which pledge a first priority lien on virtually all of the Borrower’s assets, including fixed assets and intangibles, and the assets of the guarantors (other than the Company), other than all cash, trade accounts receivable, inventory, and other current assets and proceeds thereof, which will be secured by a second priority lien.
	Prior to any voluntary prepayments, the New Term Loan amortized in equal installments of 0.25% of the original principal amount of the New Term Loan payable on the first day of April, July, October and January commencing on October 1, 2013 until the final maturity date of the New Term Loan on May 31, 2020. It initially bore interest at rates based upon either a base rate plus an applicable margin of 1.75% or adjusted LIBOR rate plus an applicable margin of 2.75%, subject to a LIBOR floor of 0.75%. Beginning in the second quarter of 2014, the applicable margin related to base rate loans can be reduced to 1.50% and the applicable margin related to LIBOR rate loans can be reduced to 2.50%, in each case, if the Borrower’s net debt leverage ratio, as defined in the New Term Loan Credit Agreement, falls below 3.00 to 1.00 for that measurement period.
	As the Borrower’s net debt leverage ratio was below 3.00 to 1.00 on April 1, 2014, the Company realized a 25 basis point reduction in borrowing costs during the second quarter of 2014. As a result, the Company recorded a cumulative catch-up gain of $16,014 in the second quarter of 2014 which represents the total cash interest savings over the remaining term of the loan. The gain was recorded as original issue discount on long-term borrowings in the consolidated balance sheets. The Borrower’s net debt leverage ratio as of December 31, 2014 continues to be below 3.00 to 1.00.
	The New Term Loan Credit Agreement contains restrictions on the Borrower’s ability to pay distributions and dividends (but which permitted the payment of the special cash dividend described in Note 17, “Special Cash Dividend” to the consolidated financial statements). Payments can be made by the Borrower to the Company or other parent companies for certain expenses such as operating expenses in the ordinary course, fees and expenses related to any debt or equity offering and to pay franchise or similar taxes. Dividends can be used to repurchase equity interests, subject to limitations in certain circumstances. Additionally, the New Term Loan Credit Agreement restricts the aggregate amount of dividends and distributions that can be paid and, in certain circumstances, requires pro forma compliance with certain fixed charge coverage ratios or gross leverage ratios, as applicable, in order to pay certain dividends and distributions. The New Term Loan Credit Agreement also contains other affirmative and negative covenants that, among other things, limit the incurrence of additional indebtedness, liens on property, sale and leaseback transactions, investments, loans and advances, mergers or consolidations, asset sales, acquisitions, transactions with affiliates, prepayments of certain other indebtedness and modifications of our organizational documents. The New Term Loan Credit Agreement does not contain any financial maintenance covenants.
	The New Term Loan Credit Agreement contains customary events of default, including, among others, nonpayment of principal, interest or other amounts, failure to perform covenants, inaccuracy of representations or warranties in any material respect, cross-defaults with other material indebtedness, certain undischarged judgments, the occurrence of certain ERISA or bankruptcy or insolvency events or the occurrence of a change in control (defined in the New Term Loan Credit Agreement). A bankruptcy or insolvency event of default will cause the obligations under the New Term Loan Credit Agreement to automatically become immediately due and payable.
	Concurrent with the closing of the New Term Loan Credit Agreement on May 31, 2013, the Borrower amended its existing ABL Credit Agreement (New ABL Credit Agreement). The amendment provides for a one year extension of the maturity date in respect of the $150,000 senior secured ABL revolving credit facility provided under the ABL Credit Agreement (ABL Facility). The extended maturity date of the ABL Facility is May 31, 2018. Borrowings under the ABL Facility are guaranteed by all of the Borrower’s wholly-owned domestic restricted subsidiaries and GAC, and are secured by associated collateral agreements which pledge a first priority lien on all cash, trade accounts receivable, inventory, and other current assets and proceeds thereof, and a second priority lien on all other assets, including fixed assets and intangibles of the Borrower, certain domestic subsidiaries of the Borrower and the guarantors (other than the Company).
	Borrowings under the ABL facility bear interest at rates based upon either a base rate plus an applicable margin of 1.00% or adjusted LIBOR rate plus an applicable margin of 2.00%, in each case, subject to adjustments based upon average availability under the ABL Facility. The New ABL Credit Agreement requires the Borrower to maintain a minimum consolidated fixed charge coverage ratio of 1.0x, tested on a quarterly basis, when Availability plus the amount of Qualified Cash (up to $5,000) (as defined in the New ABL Credit Agreement) under the ABL Facility is less than the greater of (i) 10.0% of the Line Cap (as defined in the New ABL Credit Agreement) or (ii) $10,000. The New ABL Credit Agreement also contains covenants and events of default substantially similar to those in the New Term Loan Credit Agreement, as described above. As of December 31, 2014, no amounts were outstanding under the ABL Facility. As of December 31, 2014, the Company had $189,761 of unrestricted cash and cash equivalents and $148,500 of availability under the ABL Facility, net of outstanding letters of credit.
	In connection with the February 9, 2012 refinancing and in accordance with ASC 470-50, Debt Modifications and Extinguishments, the Company capitalized $10,409 of new debt issuance costs, recorded $1,386 of fees paid to creditors as a debt discount, expensed $1,407 of transaction fees and wrote-off $2,902 of unamortized debt issuance costs relating to the former credit agreement. In connection with the May 30, 2012 refinancing, the Company capitalized $15,309 of new debt issuance costs, recorded $18,000 of fees paid to creditors as a debt discount, expensed $801 of transaction fees and wrote-off $9,198 of unamortized debt issuance costs relating to the Credit Agreement. Amounts expensed were recorded as a loss on extinguishment of debt in the consolidated statement of comprehensive income for the year ended December 31, 2012.
	In connection with the May 31, 2013 refinancing, the Company capitalized $21,824 of new debt issuance costs, recorded $13,797 of fees paid to creditors as a debt discount, expensed $7,100 of transaction fees and wrote-off $5,473 of unamortized debt issuance costs and original issue discount relating to the previous Term Loan Credit Agreement and ABL Credit Agreement. Amounts expensed were recorded as a loss on extinguishment of debt in the consolidated statement of comprehensive income for the year ended December 31, 2013. The Company amortizes both the capitalized debt issuance costs and the original issue discount on its loans under the catch-up approach of the effective interest method.
	On February 11, 2013, the Company made an $80,000 voluntary prepayment of debt with available cash on hand that was applied to future principal amortizations on the Term Loan Credit Agreement. As a result, the Company wrote off $1,839 of original issue discount and capitalized debt issuance costs during the first quarter of 2013. On May 2, 2013, the Company made an additional $30,000 voluntary prepayment of existing debt with available cash on hand. As a result, the Company wrote off $924 of original issue discount and capitalized debt issuance costs during the second quarter of 2013.
	On April 30, September 30 and December 31, 2014, the Company made voluntary prepayments of the New Term Loan of $12,000, $50,000 and $25,000, respectively, with available cash on hand that was applied to future principal amortizations and the Excess Cash Flow payment requirement in the New Term Loan Credit Agreement. As a result of the prepayments, the Company wrote off $2,084 of original issue discount and capitalized debt issuance costs during the year ended December 31, 2014 as a loss on extinguishment of debt in the consolidated statement of comprehensive income.
	As of December 31, 2014 and December 31, 2013, short-term borrowings consisted primarily of borrowings by our foreign subsidiaries on local lines of credit, which totaled $5,359 and $9,575 respectively.

Note_12_Earnings_Per_Share

Note 12 - Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	12. Earnings Per Share
	Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period, excluding unvested restricted shares. Except where the result would be anti-dilutive, dilutive earnings per share is calculated by assuming the vesting of unvested restricted stock and the exercise of stock options, as well as their related income tax benefits. The following table summarizes the basic and diluted earnings per share calculations:
		Year Ended December 31,
		2014		2013		2012
	Net income (numerator)	$	174,613	$	174,539	$	93,223
	Weighted average shares (denominator)
	Basic		68,538,248		68,081,632		67,360,632
	Dilutive effect of stock compensation awards (1)		1,632,796		1,585,897		1,832,506
	Diluted		70,171,044		69,667,529		69,193,138
	Net income per share
	Basic	$	2.55	$	2.56	$	1.38
	Diluted	$	2.49	$	2.51	$	1.35
	(1) Excludes approximately 81,600, 10,300 and 363,000 stock options and restricted stock awards for the years ended December 31, 2014, 2013 and 2012, respectively, as the impact of such awards was anti-dilutive.

Note_13_Income_Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	13. Income Taxes
	The Company’s provision for income taxes consists of the following:
		Year Ended December 31,
		2014			2013			2012
	Current:
	Federal	$	38,161		$	48,287		$	34,170
	State		1,645			5,648			3,854
	Foreign		5,701			2,214			81
			45,507			56,149			38,105
	Deferred:
	Federal		42,474			42,003			21,972
	State		(3,134	)		5,523			3,048
	Foreign		(1,462	)		167			25
			37,878			47,693			25,045
	Change in valuation allowance		364			335			(21	)
	Provision for income taxes	$	83,749		$	104,177		$	63,129
	The Company has been notified by the Internal Revenue Service of an income tax audit for the 2012 tax year. To date, field work has not commenced. As of December 31, 2014, due to the carryforward of net operating losses and research and development credits, the Company is open to U.S. Federal and state income tax examinations for the tax years 2006 through 2014. In addition, the Company is subject to audit by various foreign taxing jurisdictions for the tax years 2009 through 2014.
	Significant components of deferred tax assets and liabilities are as follows:
		December 31,
		2014			2013
	Deferred tax assets:
	Goodwill and intangible assets	$	23,624		$	74,992
	Accrued expenses		18,191			24,263
	Deferred revenue		7,945			4,413
	Inventories		6,306			4,483
	Pension obligations		8,738			4,043
	Stock-based compensation		8,628			6,609
	Operating loss and credit carryforwards		10,047			976
	Other		4,299			2,089
	Valuation allowance		(1,385	)		(1,021	)
	Total deferred tax assets		86,393			120,847
	Deferred tax liabilities:
	Depreciation		18,535			15,163
	Debt refinancing costs		10,925			7,494
	Prepaid expenses		1,032			1,183
	Total deferred tax liabilities		30,492			23,840
	Net deferred tax assets	$	55,901		$	97,007
	The net current and noncurrent components of deferred taxes included in the consolidated balance sheets are as follows:
		December 31,
		2014			2013
	Net current deferred tax assets	$	22,841		$	26,869
	Net long-term deferred tax assets		47,894			86,125
	Net long-term deferred tax liabilities		(13,449	)		(14,966	)
	Valuation allowance		(1,385	)		(1,021	)
	Net deferred tax assets	$	55,901		$	97,007
	The net long-term deferred tax liabilities and valuation allowance are included in other long-term liabilities and deferred income taxes (noncurrent), respectively, in the consolidated balance sheets as of December 31, 2014 and 2013.
	Generac Brazil, acquired as part of the Ottomotores acquisition, has generated net operating losses for multiple years as part of the start-up of the business. The realizability of the deferred tax assets associated with these net operating losses is uncertain so a valuation allowance was recorded in the opening balance sheet as of December 8, 2012 as well as at December 31, 2014 and 2013.
	At December 31, 2014, the Company had state research and development credit, and state manufacturing credit carryforwards of approximately $15,610 and $2,424, respectively, which expire between 2017 and 2029.
	Changes in the Company’s gross liability for unrecognized tax benefits, excluding interest and penalties, were as follows:
		December 31,
		2014
	Unrecognized tax benefit, beginning of period	$	-
	Increase in unrecognized tax benefit for positions taken in current period		6,394
	Unrecognized tax benefit, end of period	$	6,394
	At December 31, 2013 and 2012, the Company had no reserves recorded for uncertain tax positions.
	The entire unrecognized tax benefit as of December 31, 2014, if recognized, would impact the effective tax rate.
	Interest and penalties are recorded as a component of income tax expense. As of December 31, 2014, total interest of approximately $86 and penalties of approximately $263 associated with net unrecognized tax benefits are included in the Company’s consolidated balance sheet. There were no interest or penalties related to income taxes that had been accrued or recognized as of and for the years ended December 31, 2013 and 2012.
	The Company does not expect a significant increase or decrease to the total amounts of unrecognized tax benefits related to continuing operations during the fiscal year ending December 31, 2015.
	The Company considers the earnings of certain non-U.S. subsidiaries to be indefinitely invested outside the United States on the basis of estimates that future domestic cash generation will be sufficient to meet future domestic cash needs and the Company’s specific plans for reinvestment of those subsidiary earnings. The Company has not provided for additional U.S. income taxes on approximately $9,139 of undistributed earnings of consolidated non-U.S. subsidiaries. It is not practicable to estimate the amount of unrecognized withholding taxes and deferred tax liability on such earnings.
	A reconciliation of the statutory tax rates and the effective tax rates for the years ended December 31, 2014, 2013 and 2012 are as follows:
		Year Ended December 31,
		2014			2013			2012
	U.S. statutory rate		35	%		35	%		35	%
	State taxes		3.1			3.7			4.1
Valuation allowance		0.2			0.2			-
Research and development credits		(5.0	)		(0.6	)		(0.2	)
Other		(0.9	)		(0.9	)		1.5
Effective tax rate		32.4	%		37.4	%		40.4	%

Note_14_Benefit_Plans

Note 14 - Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	14. Benefit Plans
	Medical and Dental Plan
	The Company maintains medical and dental benefit plans covering full-time domestic employees of the Company and their dependents. Certain plans are partially or fully self-funded plans under which participant claims are obligations of the plan. These plans are funded through employer and employee contributions at a level sufficient to pay for the benefits provided by the plan. The Company’s contributions to the plans were $11,701, $9,500, and $8,741 for the years ended December 31, 2014, 2013, and 2012, respectively. During 2014, the Company paid premiums of $2,700 for other standard medical benefits covering certain full-time employees.
	The Company’s foreign subsidiaries participate in government sponsored medical benefit plans. In certain cases, the Company purchases supplemental medical coverage for certain employees at these foreign locations. The expenses related to these plans are not material to the Company’s consolidated financial statements.
	Savings Plan
	The Company maintains a defined-contribution 401(k) savings plan for eligible domestic employees. Under the plan, employees may defer receipt of a portion of their eligible compensation. The Company amended the 401(k) savings plans effective January 1, 2009, to add Company matching and non-elective contributions. The Company may contribute a matching contribution of 50% of the first 6% of eligible compensation of employees. The Company may also contribute a non-elective contribution for eligible employees employed on December 31, 2008. Both Company matching contributions and non-elective contributions are subject to vesting. Forfeitures may be applied against plan expenses. The Company recognized $3,400, $3,300 and $3,000 of expense related to this plan in 2014, 2013 and 2012, respectively.
	Pension Plans
	The Company has a frozen noncontributory salaried and hourly pension plans (Pension Plans) covering certain domestic employees. The benefits under the salaried plan are based upon years of service and the participants’ defined final average monthly compensation. The benefits under the hourly plan are based on a unit amount at the date of termination multiplied by the participant’s years of credited service. The Company’s funding policy for the Pension Plans is to contribute amounts at least equal to the minimum annual amount required by applicable regulations.
	The Company uses a December 31 measurement date for the Pension Plans. The table that includes the accumulated benefit obligation; and reconciliation of the changes in projected benefit obligation, changes in plan assets and the funded status of the Pension Plans is as follows:
			Year Ended December 31,
			2014			2013
	Accumulated benefit obligation at end of period		$	68,376		$	52,825
	Change in projected benefit obligation
	Projected benefit obligation at beginning of period		$	52,825		$	59,744
	Interest cost			2,591			2,423
	Net actuarial loss (gain)			14,791			(7,695	)
	Benefits paid			(1,831			(1,647	)
	Projected benefit obligation at end of period		$	68,376		$	52,825
	Change in plan assets
	Fair value of plan assets at beginning of period		$	42,440		$	36,570
	Actual return on plan assets			3,110			6,465
	Company contributions			1,733			1,052
	Benefits paid			(1,831			(1,647	)
	Fair value of plan assets at end of period		$	45,452		$	42,440
	Funded status: accrued pension liability included in other long-term liabilities		$	(22,924		$	(10,385	)
	Amounts recognized in accumulated other comprehensive income
	Net actuarial loss		$	(13,243		$	(4,393	)
	The actuarial loss for the Pension Plans that was amortized from AOCI into net periodic (benefit) cost during 2014 is $106. The amount in AOCI as of December 31, 2014 that is expected to be recognized as a component of net periodic pension expense during the next fiscal year is $1,228.
	The components of net periodic pension (benefit) cost is as follows:
			Year Ended December 31,
			2014			2013			2012
	Components of net periodic pension (benefit) cost:
	Interest cost		$	2,591		$	2,423		$	2,453
	Expected return on plan assets			(2,933	)		(2,520	)		(2,398	)
	Amortization of net loss			106			1,108			909
	Net periodic pension (benefit) cost		$	(236	)	$	1,011		$	964
	Weighted-average assumptions used to determine the benefit obligations are as follows:
			December 31,
			2014			2013
	Discount rate - salaried pension plan			3.97	%		4.98	%
	Discount rate - hourly pension plan			3.99	%		5.01	%
	Rate of compensation increase (1)			n/a			n/a
		-1	No compensation increase was assumed as the plans were frozen effective December 31, 2008.
	Weighted-average assumptions used to determine net periodic pension (benefit) cost are as follows:
			Year Ended December 31,
			2014			2013			2012
	Discount rate			5.01	%		4.14	%		4.65	%
	Expected long-term rate of return on plan assets			6.88			6.95			7.57
	Rate of compensation increase (1)			n/a			n/a			n/a
		-1	No compensation increase was assumed as the plans were frozen effective December 31, 2008.
	To determine the long-term rate of return assumption for plan assets, the Company studies historical markets and preserves the long-term historical relationships between equities and fixed-income securities consistent with the widely accepted capital market principle that assets with higher volatility generate a greater return over the long run. The Company evaluates current market factors such as inflation and interest rates before it determines long-term capital market assumptions and reviews peer data and historical returns to check for reasonableness and appropriateness.
	The Pension Plan’s weighted-average asset allocation at December 31, 2014 and 2013, by asset category, is as follows:
						31-Dec-14						31-Dec-13
	Asset Category		Target			Dollars			%			Dollars		%
	Fixed Income			24	%	$	7,400			16	%	$	7,307		17	%
	Domestic equity			49	%		24,373			54	%		23,903		56	%
	International equity			17	%		8,869			19	%		7,424		18	%
	Real estate			10	%		4,810			11	%		3,806		9	%
	Total			100	%	$	45,452			100	%	$	42,440		100	%
	The fair values of the Pension Plan's assets at December 31, 2014 are as follows:
			Total			Quoted Prices in			Significant			Significant
						Active Markets for			Observable			Unobservable
						Identical Asset			Inputs			Inputs
						(Level 1)			(Level 2)			(Level 3)
Mutual fund		$	42,267		$	42,267		$	-		$	-
Other investments			3,185			-			-			3,185
Total		$	45,452		$	42,267		$	-		$	3,185
The fair values of the Pension Plan's assets at December 31, 2013 are as follows:
		Total			Quoted Prices in			Significant			Significant
					Active Markets for			Observable			Unobservable
					Identical Asset			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)
Mutual fund		$	39,759		$	39,759		$	-		$	-
Collective trust			2,681			-			2,681			-
Total		$	42,440		$	39,759		$	2,681		$	-
A reconciliation of beginning and ending balances for Level 3 assets for the year ended December 31, 2014 is as follows:
		Other Investments
Balance as of December 31, 2013		$	-
Purchases			3,100
Realized gains			85
Balance as of December 31, 2014		$	3,185
Mutual Funds - This category includes investments in mutual funds that encompass both equity and fixed income securities that are designed to provide a diverse portfolio. The plan’s mutual funds are designed to track exchange indices, and invest in diverse industries. Some mutual funds are classified as regulated investment companies. Investment managers have the ability to shift investments from value to growth strategies, from small to large capitalization funds, and from U.S. to international investments. These investments are valued at the closing price reported on the active market on which the individual securities are traded. These investments are classified within Level 1 of the fair value hierarchy.
Other Investments - This category includes investments in limited partnerships and are valued at estimated fair value, as determined with the assistance of each respective limited partnership, based on the net asset value of the investment as of the balance sheet date, which is subject to judgment. The Net Asset Value (NAV) is classified within Level 3 of the fair value hierarchy.
Collective Trusts - This category includes public investment vehicles valued using the NAV provided by the administrator of the trust. The NAV is based on the value of the underlying assets owned by the trust, minus its liabilities, and then divided by the number of shares outstanding. The NAV of the trust is classified within Level 2 of the fair value hierarchy.
The Company’s target allocation for equity securities and real estate is generally between 65% - 85%, with the remainder allocated primarily to bonds. The Company regularly reviews its actual asset allocation and periodically rebalances its investments to the targeted allocation when considered appropriate.
The Company expects to make estimated contributions of $1,187 to the Pension Plans in 2015.
The following benefit payments are expected to be paid from the Pension Plans:
Year
2015			$	1,888
2016				1,998
2017				2,185
2018				2,319
2019				2,430
2020 - 2024				14,500
Certain of the Company’s foreign subsidiaries participate in local defined benefit or other post-employment benefit plans. These plans provide benefits that are generally based on years of credited service and a percentage of the employee’s eligible compensation earned throughout the applicable service period. Liabilities recorded under these plans are included in accrued wages and employee benefits in the Company’s consolidated balance sheets and are not material.

Note_15_Share_Plans

Note 15 - Share Plans	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	15. Share Plans
	The Company adopted an equity incentive plan on February 10, 2010 in connection with its initial public offering. The plan, as amended, allows for granting of up to 9.1 million stock-based awards to executives, directors and employees. Awards available for grant under the Plan include stock options, stock appreciation rights, restricted stock, other stock-based awards, and performance-based compensation awards. Total share-based compensation expense related to the equity incentive plan was $12,612, $12,368 and $10,780 the years ended December 31, 2014, 2013 and 2012, respectively, net of estimated forfeitures, which is recorded in operating expenses in the consolidated statements of comprehensive income.
	Stock Options - Stock options granted in 2014 have an exercise price of between $42.20 per share and $59.01 per share, stock options granted in 2013 have an exercise price of between $29.81 per share and $48.36 per share, and the stock options granted in 2012 have an exercise price of between $15.94 per share and $32.05 per share. On June 21, 2013, the Company paid a special cash dividend of $5.00 per share on its common stock, and on June 29, 2012, the Company paid a special cash dividend of $6.00 per share on its common stock. In connection with these special dividends, and pursuant to the terms of the Company’s stock option plan, certain adjustments were made to stock options outstanding under the plan in order to avoid dilution of the intended benefits which would otherwise result as a consequence of the special dividend. As such, the strike price for all outstanding stock options as of the special dividend dates, were adjusted by the $5.00 and $6.00 special dividend amounts. There was no change to compensation expense as a result of these adjustments. Stock options issued in 2014, 2013 and 2012 vest in equal installments over four years, subject to the grantee’s continued employment or service and expire 10 years after the date of grant. Stock options issued in 2011 and 2010 vest in equal installments over five years, subject to the grantee’s continued employment or service and expire 10 years after the date of grant.
	Beginning in 2011, stock option exercises are net-share settled such that the Company withholds shares with value equivalent to the exercise price of the stock option awards plus the employees’ minimum statutory obligation for the applicable income and other employment taxes. Total shares withheld were 235,644, 323,427 and 667,041 in 2014, 2013 and 2012, respectively, and were based on the value of the stock on the exercise dates as determined based upon an average of the Company’s high and low stock sales price on the exercise dates. Total payments for the employees’ tax obligations to the taxing authorities were $10,411, $8,449 and $6,425 in 2014, 2013 and 2012, respectively, and are reflected as a financing activity within the consolidated statements of cash flows. The net-share settlements had the effect of share repurchases by the Company as they reduced the number of shares that would have otherwise been issued.
	The grant-date fair value of each option grant is estimated using the Black-Scholes-Merton option pricing model. The fair value is then amortized on a straight-line basis over the requisite service period of the awards, which is generally the vesting period. Use of a valuation model requires management to make certain assumptions with respect to selected model inputs. Since there is limited history for the Company’s stock, expected volatility is calculated based on an analysis of historic and implied volatility measures for a set of peer companies. The average expected life is based on the contractual term of the option using the simplified method. The risk-free interest rate is based on U.S. Treasury zero-coupon issues with a remaining term equal to the expected life assumed at the date of grant. The compensation expense recognized is net of estimated forfeitures. Forfeitures are estimated based on actual share option forfeiture history. The weighted-average assumptions used in the Black-Scholes-Merton option pricing model for 2014, 2013 and 2012 are as follows:
		2014			2013			2012
	Weighted average grant date fair value	$	26.35		$	16.3		$	12.13
	Assumptions:
	Expected stock price volatility		45	%		47	%		45	%
	Risk free interest rate		1.9	%		1.21	%		1.22	%
	Expected annual dividend per share	$	-		$	-		$	-
	Expected life of options (years)		6.25			6.25			6.25
	The Company periodically evaluates its forfeiture rates and updates the rates it uses in the determination of its stock-based compensation expense. The impact of the change to the forfeiture rates on non-cash compensation expense was immaterial for the years ended December 31, 2014, 2013 and 2012.
	A summary of the Company’s stock option activity and related information for the years ended December 31, 2014, 2013 and 2012 is as follows:
		Number of			Weighted-			Weighted-			Aggregate
		Options			Average			Average			Intrinsic Value
					Exercise Price			Remaining Contractual			($ in thousands)
								Term (in years)
	Outstanding as of December 31, 2011		4,308,545		$	13.36			8.2		$	63,193
	Granted		256,112			21.28
	Exercised		(1,113,827	)		13.21
	Expired		-			-
	Forfeited		(10,788	)		20.52
	Outstanding as of December 31, 2012		3,440,042			8.44			9.5		$	87,001
	Granted		253,857			35.04
	Exercised		(703,326	)		6.05
	Expired		(1,625	)		20.94
	Forfeited		(51,647	)		17.02
	Outstanding as of December 31, 2013		2,937,301			5.74			9.5		$	148,369
	Granted		187,189			57.21
	Exercised		(549,282	)		3.44
	Expired		(259	)		15.94
	Forfeited		(32,810	)		12.68
	Outstanding as of December 31, 2014		2,542,139			9.94			8.5		$	96,518
	Exercisable as of December 31, 2014		1,210,861			4.22			8.4		$	52,014
	As of December 31, 2014, there was $7,794 of total unrecognized compensation cost, net of expected forfeitures, related to unvested options. The cost is expected to be recognized over the remaining service period, having a weighted-average period of 2.4 years. Total share-based compensation cost related to the stock options for 2014, 2013 and 2012 was $8,509, $9,034 and $6,835, respectively, which is recorded in operating expenses in the consolidated statements of comprehensive income.
	Restricted Stock – For awards issued prior to 2012, restricted stock awards vest in full on the third anniversary of the date of grant, subject to the grantee’s continued employment. Restricted stock awards issued in 2012 and after, vest in equal installments over three years, subject to the grantee’s continued employment or service. Restricted stock also includes performance shares, which were awarded for the first time in 2014. The number of performance shares that can be earned are contingent upon Company performance measures over a three-year period. Performance measures are based on a weighting of revenue growth and EBITDA margin, from which grantees may earn from 0% to 200% of their target performance share award. The performance period for the 2014 awards covers the years 2014 through 2016. The fair market value of the restricted awards at the time of the grant is amortized to expense over the period of vesting. The fair value of restricted awards is determined based on the market value of the Company's shares on the grant date. The compensation expense recognized for restricted share awards is net of estimated forfeitures.
	Restricted stock vesting is net-share settled such that the Company withholds shares with value equivalent to the employees’ minimum statutory obligation for the applicable income and other employment taxes. In effect, the Company repurchases these shares and classifies as treasury stock, and uses the cash on behalf of the employees to satisfy the tax withholding requirements. Total shares withheld were approximately 34,854, 163,458 and zero in 2014, 2013 and 2012, respectively, and were based on the value of the stock on the vesting dates as determined based upon an average of the Company’s high and low stock sales price on the vesting dates. Total payments for the employees’ tax obligations to the taxing authorities were $1,770, $6,571 and zero in 2014, 2013 and 2012, respectively, and are reflected as a financing activity within the consolidated statements of cash flows.
	A summary of the Company's restricted share awards activity for the years ended December 31, 2014, 2013 and 2012 is as follows:
		Shares			Weighted-
					Average Grant-
					Date Fair Value
	Non-vested as of December 31, 2011		489,302		$	13.93
	Granted		195,771			26.94
	Vested		-			-
	Forfeited		(20,002	)		11.96
	Non-vested as of December 31, 2012		665,071			17.75
	Granted		112,494			37.82
	Vested		(450,537	)		14.21
	Forfeited		(22,622	)		25.36
	Non-vested as of December 31, 2013		304,406			29.68
	Granted		115,473			54.35
	Vested		(105,123	)		28.31
	Forfeited		(47,472	)		42.31
	Non-vested as of December 31, 2014		267,284			38.72
	As of December 31, 2014, there was $5,394 of unrecognized compensation cost, net of expected forfeitures, related to non-vested restricted stock awards. That cost is expected to be recognized over the remaining service period, having a weighted-average period of 2.1 years. Total share-based compensation cost related to the restricted stock for 2014, 2013 and 2012 was $4,103, $3,074 and $3,645, respectively, which is recorded in operating expenses in the consolidated statements of comprehensive income.
	During 2014, 2013 and 2012, 8,869, 7,291 and 10,864 shares, respectively, of fully vested stock were granted to certain members of the Company’s board of directors as a component of their compensation for their service on the board. Total compensation cost for these share grants in 2014, 2013 and 2012 was $509, $260 and $300, respectively, which is recorded in operating expenses in the consolidated statements of comprehensive income.

Note_16_Commitments_and_Contin

Note 16 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	16. Commitments and Contingencies
	The Company leases certain computer equipment, automobiles, and warehouse space under operating leases with terms generally ranging between 3-5 years.
	The approximate aggregate minimum rental commitments at December 31, 2014, are as follows:
	Year	Amount
	2015	$	2,585
	2016		2,567
	2017		1,571
	2018		264
	2019		-
	Total	$	6,987
	Total rent expense for the years ended December 31, 2014, 2013 and 2012, which includes short-term data processing equipment rentals, was approximately $4,102, $2,457, and $2,870, respectively.
	The Company has an arrangement with a finance company to provide floor plan financing for certain dealers. The Company receives payment from the finance company after shipment of product to the dealer. The Company participates in the cost of dealer financing up to certain limits. The Company has agreed to repurchase products repossessed by the finance company, but does not indemnify the finance company for any credit losses they incur. The amount financed by dealers which remained outstanding under this arrangement at December 31, 2014 and 2013 was approximately $26,100 and $24,300, respectively.
	In the normal course of business, the Company is named as a defendant in various lawsuits in which claims are asserted against the Company. In the opinion of management, the liabilities, if any, which may result from such lawsuits are not expected to have a material adverse effect on the financial position, results of operations, or cash flows of the Company.

Note_17_Special_Cash_Dividends

Note 17 - Special Cash Dividends	12 Months Ended
	Dec. 31, 2014
Special Cash Dividends [Abstract]
Special Cash Dividends [Text Block]	17. Special Cash Dividends
	On June 29, 2012, the Company used a portion of the proceeds from the May 30, 2012 debt refinancing (see Note 11, “Credit Agreements” to the consolidated financial statements) together with cash on its balance sheet to pay a special cash dividend of $6.00 per share on its common stock, resulting in payments totaling $404,332 to stockholders. Related dividends declared but unpaid as of December 31, 2014 of $731, which relate to dividends earned on unvested restricted stock awards, are included in other accrued liabilities in the consolidated balance sheet. Payment of these dividends will be made when the underlying restricted stock awards vest. The 2012 dividend was recorded as a reduction to additional paid-in capital as the Company had an accumulated deficit balance as of the dividend declaration date.
	On June 21, 2013, the Company used a portion of the proceeds from the May 31, 2013 debt refinancing (see Note 11, “Credit Agreements” to the consolidated financial statements) to pay a special cash dividend of $5.00 per share on its common stock, resulting in payments totaling $340,772 to stockholders. Related dividends declared but unpaid as of December 31, 2014 of $810, which relate to dividends earned on unvested restricted stock awards, are included in other accrued liabilities in the consolidated balance sheet. Payment of these dividends will be made when the underlying restricted stock awards vest. The balance of retained earnings as of the 2013 dividend declaration date was $4,934. As such, the dividends were first charged to retained earnings and dividends in excess of retained earnings were recorded as a reduction to additional paid-in capital.
	In connection with the special dividends, and pursuant to the terms of the Company’s stock option plan, certain adjustments were made to stock options outstanding under the plan in order to avoid dilution of the intended benefits which would otherwise result as a consequence of the special dividend. As such, the strike price for all outstanding stock options at that time of the dividend was modified by the $6.00 and $5.00 special dividend amount, respectively, for the 2012 and 2013 special dividends. There was no change to compensation expense as a result of this adjustment.

Note_18_Quarterly_Financial_In

Note 18 - Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	18. Quarterly Financial Information (Unaudited)
		Quarters Ended 2014
		Q1		Q2		Q3		Q4
	Net sales	$	342,008	$	362,609	$	352,305	$	403,997
	Gross profit		119,514		128,012		130,283		138,410
	Operating income		65,306		78,160		70,794		79,115
	Net income		34,701		54,025		36,497		49,390
	Net income per common share, basic:	$	0.51	$	0.79	$	0.53	$	0.72
	Net income per common share, diluted:	$	0.5	$	0.77	$	0.52	$	0.7
		Quarters Ended 2013
		Q1		Q2		Q3		Q4
	Net sales	$	399,572	$	346,688	$	363,269	$	376,236
	Gross profit		153,462		130,953		139,463		145,682
	Operating income		96,525		76,433		87,289		91,218
	Net income		50,674		28,254		47,093		48,518
	Net income per common share, basic:	$	0.75	$	0.41	$	0.69	$	0.71
	Net income per common share, diluted:	$	0.73	$	0.4	$	0.67	$	0.69

Note_19_Valuation_and_Qualifyi

Note 19 - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	19. Valuation and Qualifying Accounts
	For the years ended December 31, 2014, 2013 and 2012:
		Balance at Beginning of		Reserves			Additions			Charges to Reserve, Net (1)			Balance at End
		Year		Assumed in			Charged to						of Year
				Acquisition			Earnings
	Year ended December 31, 2014
	Allowance for doubtful accounts	$	2,658	$	209		$	672		$	(1,264	)	$	2,275
	Reserves for inventory		6,558		2,282			2,797			(2,250	)		9,387
	Valuation of deferred tax assets		1,021		-			364		-				1,385
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	1,166	$	496		$	1,037		$	(41	)	$	2,658
	Reserves for inventory		6,999		1,131			72			(1,644	)		6,558
	Valuation of deferred tax assets		806		(120	)		335		-				1,021
	Year ended December 31, 2012
	Allowance for doubtful accounts	$	789	$	383		$	204		$	(210	)	$	1,166
	Reserves for inventory		4,717		1,694			1,785			(1,197	)		6,999
	Valuation of deferred tax assets		-		827			(21	)	-				806
	(1) Deductions from the allowance for doubtful accounts equal accounts receivable written off, less recoveries, against the allowance. Deductions from the reserves for inventory excess and obsolete items equal inventory written off against the reserve as items were disposed of.

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany amounts and transactions have been eliminated in consolidation.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents
	The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted Cash
	Restricted cash represents cash transferred to an escrow account for the settlement of certain earn-out obligations associated with the Tower Light acquisition. See Note 3, “Acquisitions,” to the consolidated financial statements for additional details.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk
	The Company maintains the majority of its cash in one commercial bank in multiple operating and investment accounts. Balances on deposit are insured by the Federal Deposit Insurance Corporation (FDIC) up to specified limits. Balances in excess of FDIC limits are uninsured.
	One customer accounted for approximately 9% and 11% of accounts receivable at December 31, 2014 and 2013, respectively. No one customer accounted for greater than 8%, 6% and 7%, of net sales during the years ended December 31, 2014, 2013, or 2012, respectively.
Receivables, Policy [Policy Text Block]	Accounts Receivable
	Receivables are recorded at their face value amount less an allowance for doubtful accounts. The Company estimates and records an allowance for doubtful accounts based on specific identification and historical experience. The Company writes off uncollectible accounts against the allowance for doubtful accounts after all collection efforts have been exhausted. Sales are generally made on an unsecured basis.
Inventory, Policy [Policy Text Block]	Inventories
	Inventories are stated at the lower of cost or market, with cost determined generally using the first-in, first-out method.
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment
	Property and equipment are recorded at cost and are being depreciated using the straight-line method over the estimated useful lives of the assets, which are summarized below (in years). Costs of leasehold improvements are amortized over the lesser of the term of the lease (including renewal option periods) or the estimated useful lives of the improvements.
	Land improvements	15-Oct
	Buildings and improvements	Oct-40
	Leasehold improvements	20-Jul
	Machinery and equipment	20-May
	Dies and tools	10-Mar
	Vehicles	5-Mar
	Office equipment	10-Mar
Debt, Policy [Policy Text Block]	Debt Issuance Costs
	Direct and incremental costs incurred in connection with the issuance of long-term debt are capitalized and amortized to interest expense over the terms of the related credit agreements. Debt discounts incurred in connection with the issuance of long-term debt are deferred and recorded as a reduction of outstanding debt and amortized to interest expense using the catch-up approach of the effective interest method over the terms of the related credit agreements. Approximately $6,615, $4,772, and $3,759 of deferred financing costs and original issue discount were amortized to interest expense during fiscal years 2014, 2013 and 2012, respectively. Excluding the impact of any future long-term debt issuances or prepayments, estimated amortization expense for the next five years is as follows: 2015, $7,012; 2016, $7,302; 2017, $7,550; 2018, $7,505; 2019, $7,534.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Indefinite-Lived Intangible Assets
	Goodwill represents the excess of the purchase price over fair value of identifiable net assets acquired from business acquisitions. Goodwill is not amortized, but is reviewed for impairment on an annual basis and between annual tests if indicators of impairment are present. The Company evaluates goodwill for impairment annually on October 31 or more frequently when an event occurs or circumstances change that indicates the carrying value may not be recoverable. The Company has the option to assess goodwill for impairment by first performing a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the Company determines that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, then further goodwill impairment testing is not required to be performed. If the Company determines that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, the Company is required to perform a two-step goodwill impairment test. In the first step, the fair value of the reporting unit is compared to its book value including goodwill. If the fair value of the reporting unit is in excess of its book value, the related goodwill is not impaired and no further analysis is necessary. If the fair value of the reporting unit is less than its book value, there is an indication of potential impairment and a second step is performed. When required, the second step of testing involves calculating the implied fair value of goodwill for the reporting unit. The implied fair value of goodwill is determined in the same manner as goodwill recognized in a business combination, which is the excess of the fair value of the reporting unit determined in step one over the fair value of its net assets and identifiable intangible assets as if the reporting unit had been acquired. If the carrying value of the reporting unit's goodwill exceeds the implied fair value of that goodwill, an impairment loss is recognized in an amount equal to that excess. For reporting units with a negative book value (i.e., excess of liabilities over assets), qualitative factors are evaluated to determine whether it is necessary to perform the second step of the goodwill impairment test.
	Other indefinite-lived intangible assets consist of trade names. The Company tests the carrying value of these trade names by comparing the assets’ fair value to its carrying value. Fair value is measured using a relief-from-royalty approach, which assumes the fair value of the trade name is the discounted cash flows of the amount that would be paid had the Company not owned the trade name and instead licensed the trade name from another company. The Company conducts its annual impairment test for indefinite-lived intangible assets on October 31 of each year.
	The Company performed the required annual impairment tests for fiscal years 2014, 2013 and 2012 and found no impairment of goodwill or indefinite-lived trade names. There can be no assurance that future impairment tests will not result in a charge to earnings.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets
	The Company periodically evaluates the carrying value of long-lived assets (excluding goodwill and trade names). Long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. If the sum of the expected future undiscounted cash flows is less than the carrying amount of an asset, a loss is recognized for the difference between the fair value and carrying value of the asset. Such analyses necessarily involve significant judgments.
Income Tax, Policy [Policy Text Block]	Income Taxes
	The Company is a C Corporation and therefore accounts for income taxes pursuant to the liability method. Accordingly, the current or deferred tax consequences of a transaction are measured by applying the provision of enacted tax laws to determine the amount of taxes payable currently or in future years. Deferred income taxes are provided for temporary differences between the income tax bases of assets and liabilities and their carrying amounts for financial reporting purposes. In assessing the realizability of deferred tax assets, the Company considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the years in which those temporary differences become deductible. The Company considers taxable income in prior carryback years, the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies, as appropriate, in making this assessment.
Revenue Recognition, Policy [Policy Text Block]	Revenue Recognition
	Sales, net of estimated returns and allowances, are recognized upon shipment of product to the customer, which is generally when title passes, the Company has no further obligations, and the customer is required to pay. The Company, at the request of certain customers, will warehouse inventory billed to the customer but not delivered. Unless all revenue recognition criteria have been met, the Company does not recognize revenue on these transactions until the customers take possession of the product. In these cases, the funds collected on product warehoused for these customers are recorded as a customer advance until the customer takes possession of the product and the Company’s obligation to deliver the goods is completed. Customer advances are included in accrued liabilities in the consolidated balance sheets.
	The Company provides for certain estimated sales promotions, discounts and incentive expenses which are recognized as a reduction of sales.
Shipping and Handling Cost, Policy [Policy Text Block]	Shipping and Handling Costs
	Shipping and handling costs billed to customers are included in net sales, and the related costs are included in cost of goods sold in the consolidated statements of comprehensive income.
Advertising Costs, Policy [Policy Text Block]	Advertising and Co-Op Advertising
	Expenditures for advertising, included in selling and service expenses in the consolidated statements of comprehensive income, are expensed as incurred. Total expenditures for advertising were $32,352, $19,910, and $13,360 for the years ended December 31, 2014, 2013, and 2012, respectively.
Research and Development Expense, Policy [Policy Text Block]	Research and Development
	The Company expenses research and development costs as incurred. Total expenditures incurred for research and development were $31,494, $29,271, and $23,499 for the years ended December 31, 2014, 2013 and 2012, respectively.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Translation and Transactions
	Balance sheet amounts for non-U.S. Dollar functional currency businesses are translated into dollars at the rates of exchange in effect at fiscal year-end. Income and expenses incurred in a foreign currency are translated at the average rates of exchange in effect during the year. The related translation adjustments are made directly to accumulated other comprehensive loss, a component of stockholders’ equity, in the consolidated balance sheets. Gains and losses from foreign currency transactions are recognized as incurred in the consolidated statements of comprehensive income.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments
	The Financial Accounting Standards Board (FASB) Accounting Standards Update (ASC) 820-10, Fair Value Measurement, among other things, defines fair value, establishes a consistent framework for measuring fair value, and expands disclosure for each major asset and liability category measured at fair value on either a recurring basis or nonrecurring basis. ASC 820-10 clarifies that fair value is an exit price, representing the amount that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the pronouncement establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	Assets and liabilities measured at fair value are based on the market approach, which are prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.
	The Company believes the carrying amount of its financial instruments (cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued liabilities and short-term borrowings), excluding long-term borrowings, approximates the fair value of these instruments based upon their short-term nature. The fair value of long-term borrowings, including amounts classified as current, which have an aggregate carrying value of $1,080,599 was approximately $1,048,165 (Level 2) at December 31, 2014, as calculated based on independent valuations whose inputs and significant value drivers are observable.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates
	The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Derivatives, Policy [Policy Text Block]	Derivative Instruments and Hedging Activities
	The Company records derivatives in accordance with ASC 815, Derivatives and Hedging, which requires derivative instruments be reported on the consolidated balance sheets at fair value and establishes criteria for designation and effectiveness of hedging relationships. The Company is exposed to market risk such as changes in commodity prices, foreign currencies, and interest rates. The Company does not hold or issue derivative financial instruments for trading purposes.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-Based Compensation
	Stock-based compensation expense, including stock options and restricted stock awards, is generally recognized on a straight-line basis over the vesting period based on the fair value of awards which are expected to vest. The fair value of all share-based awards is estimated on the date of grant.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements
	In May 2014, the FASB issued ASU No 2014-09, Revenue from Contracts with Customers. This guidance is the culmination of the FASB’s joint project with the International Accounting Standards Board to clarify the principles for recognizing revenue. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides a five-step process that entities should follow in order to achieve that core principal. The guidance is effective for the Company in 2017. The guidance can be applied either on a full retrospective basis or on a retrospective basis in which the cumulative effect of initially applying the standard is recognized at the date of initial application. The Company is currently assessing the impact the adoption of this guidance will have on the Company’s results of operations.
	There are several other new accounting pronouncements issued by the FASB. Each of these pronouncements, as applicable, has been or will be adopted by the Company. Management does not believe any of these accounting pronouncements has had or will have a material impact on the Company’s consolidated financial statements.

Note_2_Significant_Accounting_1

Note 2 - Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]	Land improvements	15-Oct
	Buildings and improvements	Oct-40
	Leasehold improvements	20-Jul
	Machinery and equipment	20-May
	Dies and tools	10-Mar
	Vehicles	5-Mar
	Office equipment	10-Mar

Note_4_Derivative_Instruments_1

Note 4 - Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	As of December 31, 2014:
	Commodity	Trade Date		Effective Date		Notional Amount			Termination Date
	Copper	2-Oct-14		1-Oct-14		$	4,960		31-Dec-15
	Copper	15-Oct-14		1-Nov-14		$	4,637		31-Dec-15
	Copper	1-Dec-14		1-Dec-14		$	8,232		31-Dec-15
	As of December 31, 2013:
	Commodity		Trade Date	Effective Date		Notional Amount			Termination Date
	Copper		21-Jun-13	1-Oct-13		$	2,169		30-Jun-14
	As of December 31, 2012:
	Commodity		Trade Date	Effective Date		Notional Amount			Termination Date
	Copper		29-Oct-12	1-Jan-13		$	3,472		30-Sep-13
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]	As of December 31, 2014:
	Currency Denomination		Notional Amount
	British Pound Sterling (GBP) to Euro		£	5,000
	As of December 31, 2013:
	Currency Denomination		Notional Amount
	United States Dollar (USD) to Euro		$	650
	British Pound Sterling (GBP) to Euro		£	4,000
Schedule of Derivative Assets Liabilities at Fair Value [Table Text Block]			December 31,				December 31,
			2014				2013
	Interest rate swaps		$	(1,045	)		$	1,236
	Commodity contracts			(515	)			69
	Foreign currency contracts			(149	)			56
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]			Amount of Gain (Loss)									Location of Gain	Amount of Loss Reclassified								Amount of Gain (Loss)
			Recognized in AOCI for the									(Loss) Recognized in	from AOCI into Net Income for								Recognized in Net Income on
			Year Ended December 31,									the Net Income	the Year Ended December 31,								Hedges (Ineffective Portion) for
												(Loss) on Ineffective									the Year Ended December 31,
			2014				2013			2012		Portion of Hedges	2014		2013			2012			2014			2013			2012
	Derivatives designated as hedging instruments
	Interest rate swaps (1)		$	(1,420	)		$	774		$	365	Interest Expense	$	-	$	-		$	-		$	-		$	-		$	-
	Derivatives not designated as hedging instruments
	Interest rate swaps (2)		$	-			$	-		$	-	Interest Expense	$	-	$	(2,381	)	$	(2,082	)	$	-		$	2,973		$	1,695
	Commodity and foreign currency contracts		$	-			$	-		$	-	Cost of goods sold	$	-	$	-		$	-		$	(778	)	$	(661	)	$	386

Note_5_Fair_Value_Measurements1

Note 5 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]		Fair Value Measurement Using
		Total			Quoted Prices in Active		Significant
		31-Dec-14			Markets for Identical		Other Observable Inputs
					Contracts (Level 1)		(Level 2)
	Interest rate swaps	$	(1,045	)	$	-	$	(1,045	)
	Commodity contracts	$	(515	)	$	-	$	(515	)
	Foreign currency contracts	$	(149	)	$	-	$	(149	)
		Fair Value Measurement Using
		Total			Quoted Prices in Active		Significant
		31-Dec-13			Markets for Identical		Other Observable Inputs
					Contracts (Level 1)		(Level 2)
	Interest rate swaps	$	1,236		$	-	$	1,236
	Commodity contracts	$	69		$	-	$	69
	Foreign currency contracts	$	56		$	-	$	56

Note_6_Accumulated_Other_Compr1

Note 6 - Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]		Foreign			Defined				Unrealized				Total
		Currency			Benefit				Gain (Loss)
		Translation			Pension Plan				on Cash Flow
		Adjustments							Hedges
	Beginning Balance - January 1, 2014	$	1,204		$	(4,393	)		$	774			$	(2,415	)
	Other comprehensive loss before reclassifications		(3,082	)		(8,922	)			(1,420	)			(13,424	)
	Amounts reclassified from accumulated other comprehensive loss		-			72		(1)		-				72
	Net current-period other comprehensive loss		(3,082	)		(8,850	)			(1,420	)			(13,352	)
	Ending Balance - December 31, 2014	$	(1,878	)	$	(13,243	)		$	(646	)		$	(15,767	)
		Foreign			Defined				Unrealized				Total
		Currency			Benefit				Gain (Loss)
		Translation			Pension Plan				on Cash Flow
		Adjustments							Hedges
	Beginning Balance - January 1, 2013	$	(34	)	$	(12,081	)		$	(2,381	)		$	(14,496	)
	Other comprehensive income before reclassifications		1,238			6,994				774				9,006
	Amounts reclassified from accumulated other comprehensive loss		-			694		(2)		2,381		(3)		3,075
	Net current-period other comprehensive income		1,238			7,688				3,155				12,081
	Ending Balance - December 31, 2013	$	1,204		$	(4,393	)		$	774			$	(2,415	)

Note_7_Segment_Reporting_Table

Note 7 - Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Revenue from External Customers by Products and Services [Table Text Block]		Year Ended December 31,
		2014		2013		2012
	Residential products	$	722,206	$	843,727	$	705,444
	Commercial & industrial products		652,216		569,890		410,341
	Other		86,497		72,148		60,521
	Total	$	1,460,919	$	1,485,765	$	1,176,306

Note_8_Balance_Sheet_Details_T

Note 8 - Balance Sheet Details (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block Supplement [Abstract]
Schedule of Inventory, Current [Table Text Block]		December 31,
		2014			2013
	Raw material	$	184,407		$	183,787
	Work-in-process		8,798			9,620
	Finished goods		135,567			113,404
	Reserves for excess and obsolescence		(9,387	)		(6,558	)
	Total	$	319,385		$	300,253
Property, Plant and Equipment [Table Text Block]		December 31,
		2014			2013
	Land and improvements	$	7,803		$	7,416
	Buildings and improvements		102,254			96,161
	Machinery and equipment		65,240			54,847
	Dies and tools		16,897			17,071
	Vehicles		1,383			1,979
	Office equipment		21,990			17,304
	Leasehold improvements		2,535			2,229
	Construction in progress		20,120			9,724
	Gross property and equipment		238,222			206,731
	Accumulated depreciation		(69,401	)		(60,341	)
	Total	$	168,821		$	146,390

Note_9_Goodwill_and_Intangible1

Note 9 - Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]		Year Ended December 31, 2014								Year Ended December 31, 2013
		Gross		Accumulated Impairment			Net			Gross			Accumulated Impairment			Net
	Balance at beginning of year	$	1,111,480	$	(503,193	)	$	608,287		$	1,056,136		$	(503,193	)	$	552,943
	Acquisitions of businesses, net		27,278		-		$	27,278			56,605			-		$	56,605
	Sale of business, net		-		-			-			(1,261	)		-			(1,261	)
	Balance at end of year	$	1,138,758	$	(503,193	)	$	635,565		$	1,111,480		$	(503,193	)	$	608,287
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]		Weighted		2014									2013
		Average
		Amortization		Cost			Accumulated			Net Cost			Cost			Accumulated			Net Cost
		Years					Impairment									Impairment
	Indefinite lived intangible assets
	Trade names			$	192,073		$	(9,389	)	$	182,684		$	182,585		$	(9,389	)	$	173,196
Schedule of Finite-Lived Intangible Assets [Table Text Block]				Cost			Accumulated			Amortized Cost			Cost			Accumulated			Amortized Cost
							Amortization									Amortization
	Finite lived intangible assets
	Trade names		0	$	8,775		$	(8,775	)	$	-		$	8,775		$	(8,775	)	$	-
	Customer lists		8		304,180			(263,178	)		41,002			294,627			(251,863	)		42,764
	Patents		15		121,341			(64,447	)		56,894			118,921			(56,503	)		62,418
	Unpatented technology		13		13,169			(10,435	)		2,734			13,169			(9,064	)		4,105
	Software		8		1,046			(1,037	)		9			1,046			(912	)		134
	Non-compete/other		7		1,961			(406	)		1,555			345			(137	)		208
	Total finite lived intangible assets			$	450,472		$	(348,278	)	$	102,194		$	436,883		$	(327,254	)	$	109,629

Note_10_Product_Warranty_Oblig1

Note 10 - Product Warranty Obligations (Tables)	12 Months Ended
	Dec. 31, 2014
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability [Table Text Block]		Year Ended December 31,
		2014			2013			2012
	Balance at beginning of year	$	33,734		$	36,111		$	24,643
	Payments		(20,615	)		(18,484	)		(19,801	)
	Provision for warranties issued		22,890			33,707			34,173
	Changes in estimates for pre-existing warranties		(5,100	)		(17,600	)		(2,904	)
	Balance at end of year	$	30,909		$	33,734		$	36,111
		Year Ended December 31,
		2014			2013			2012
	Balance at beginning of year	$	23,092		$	13,474		$	9,737
	Deferred revenue on extended warranty contracts sold		7,343			11,998			5,547
	Amortization of deferred revenue on extended warranty contracts		(3,242	)		(2,380	)		(1,810	)
	Balance at end of year	$	27,193		$	23,092		$	13,474
Product Warranty Obligations Included in Consolidated Balance Sheet [Table Text Block]		December 31,
		2014			2013
	Product warranty liability
	Current portion - other accrued liabilities	$	24,143		$	26,080
	Long-term portion - other long-term liabilities		6,766			7,654
	Total	$	30,909		$	33,734
	Deferred revenue related to extended warranty
	Current portion - other accrued liabilities	$	4,519		$	3,325
	Long-term portion - other long-term liabilities		22,674			19,767
	Total	$	27,193		$	23,092

Note_11_Credit_Agreements_Tabl

Note 11 - Credit Agreements (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Short-term Debt [Table Text Block]		December 31,
		2014			2013
	ABL facility	$	-		$	-
	Other lines of credit, as described below		5,359			9,575
	Total	$	5,359		$	9,575
Schedule of Long-term Debt Instruments [Table Text Block]		December 31,
		2014			2013
	Term loan	$	1,104,000		$	1,197,000
	Discount on debt		(23,861	)		(12,735	)
	Capital lease obligation		2,059			2,529
	Other		460			1,026
	Total		1,082,658			1,187,820
	Less current portion of debt		389			12,286
	Less current portion of capital lease obligation		168			185
	Total	$	1,082,101		$	1,175,349
Schedule of Maturities of Long-term Debt [Table Text Block]	Year
	2015		$	557
	2016			254
	2017			185
	2018			191
	After 2018			1,105,332
	Total		$	1,106,519

Note_12_Earnings_Per_Share_Tab

Note 12 - Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]		Year Ended December 31,
		2014		2013		2012
	Net income (numerator)	$	174,613	$	174,539	$	93,223
	Weighted average shares (denominator)
	Basic		68,538,248		68,081,632		67,360,632
	Dilutive effect of stock compensation awards (1)		1,632,796		1,585,897		1,832,506
	Diluted		70,171,044		69,667,529		69,193,138
	Net income per share
	Basic	$	2.55	$	2.56	$	1.38
	Diluted	$	2.49	$	2.51	$	1.35

Note_13_Income_Taxes_Tables

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]		Year Ended December 31,
		2014			2013			2012
	Current:
	Federal	$	38,161		$	48,287		$	34,170
	State		1,645			5,648			3,854
	Foreign		5,701			2,214			81
			45,507			56,149			38,105
	Deferred:
	Federal		42,474			42,003			21,972
	State		(3,134	)		5,523			3,048
	Foreign		(1,462	)		167			25
			37,878			47,693			25,045
	Change in valuation allowance		364			335			(21	)
	Provision for income taxes	$	83,749		$	104,177		$	63,129
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]		December 31,
		2014			2013
	Deferred tax assets:
	Goodwill and intangible assets	$	23,624		$	74,992
	Accrued expenses		18,191			24,263
	Deferred revenue		7,945			4,413
	Inventories		6,306			4,483
	Pension obligations		8,738			4,043
	Stock-based compensation		8,628			6,609
	Operating loss and credit carryforwards		10,047			976
	Other		4,299			2,089
	Valuation allowance		(1,385	)		(1,021	)
	Total deferred tax assets		86,393			120,847
	Deferred tax liabilities:
	Depreciation		18,535			15,163
	Debt refinancing costs		10,925			7,494
	Prepaid expenses		1,032			1,183
	Total deferred tax liabilities		30,492			23,840
	Net deferred tax assets	$	55,901		$	97,007
Net Current and Noncurrent Components of Deferred Taxes [Table Text Block]		December 31,
		2014			2013
	Net current deferred tax assets	$	22,841		$	26,869
	Net long-term deferred tax assets		47,894			86,125
	Net long-term deferred tax liabilities		(13,449	)		(14,966	)
	Valuation allowance		(1,385	)		(1,021	)
	Net deferred tax assets	$	55,901		$	97,007
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]		December 31,
		2014
	Unrecognized tax benefit, beginning of period	$	-
	Increase in unrecognized tax benefit for positions taken in current period		6,394
	Unrecognized tax benefit, end of period	$	6,394
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]		Year Ended December 31,
		2014			2013			2012
	U.S. statutory rate		35	%		35	%		35	%
	State taxes		3.1			3.7			4.1
	Valuation allowance		0.2			0.2			-
	Research and development credits		(5.0	)		(0.6	)		(0.2	)
	Other		(0.9	)		(0.9	)		1.5
	Effective tax rate		32.4	%		37.4	%		40.4	%

Note_14_Benefit_Plans_Tables

Note 14 - Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]		Year Ended December 31,
		2014			2013
	Accumulated benefit obligation at end of period	$	68,376		$	52,825
	Change in projected benefit obligation
	Projected benefit obligation at beginning of period	$	52,825		$	59,744
	Interest cost		2,591			2,423
	Net actuarial loss (gain)		14,791			(7,695	)
	Benefits paid		(1,831			(1,647	)
	Projected benefit obligation at end of period	$	68,376		$	52,825
	Change in plan assets
	Fair value of plan assets at beginning of period	$	42,440		$	36,570
	Actual return on plan assets		3,110			6,465
	Company contributions		1,733			1,052
	Benefits paid		(1,831			(1,647	)
	Fair value of plan assets at end of period	$	45,452		$	42,440
	Funded status: accrued pension liability included in other long-term liabilities	$	(22,924		$	(10,385	)
	Amounts recognized in accumulated other comprehensive income
	Net actuarial loss	$	(13,243		$	(4,393	)
Schedule of Net Benefit Costs [Table Text Block]		Year Ended December 31,
		2014			2013			2012
	Components of net periodic pension (benefit) cost:
	Interest cost	$	2,591		$	2,423		$	2,453
	Expected return on plan assets		(2,933	)		(2,520	)		(2,398	)
	Amortization of net loss		106			1,108			909
	Net periodic pension (benefit) cost	$	(236	)	$	1,011		$	964
Schedule of Assumptions Used [Table Text Block]		December 31,
		2014			2013
	Discount rate - salaried pension plan		3.97	%		4.98	%
	Discount rate - hourly pension plan		3.99	%		5.01	%
	Rate of compensation increase (1)		n/a			n/a
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]		Year Ended December 31,
		2014			2013			2012
	Discount rate		5.01	%		4.14	%		4.65	%
	Expected long-term rate of return on plan assets		6.88			6.95			7.57
	Rate of compensation increase (1)		n/a			n/a			n/a
Schedule of Allocation of Plan Assets [Table Text Block]					31-Dec-14						31-Dec-13
	Asset Category	Target			Dollars			%			Dollars		%
	Fixed Income		24	%	$	7,400			16	%	$	7,307		17	%
	Domestic equity		49	%		24,373			54	%		23,903		56	%
	International equity		17	%		8,869			19	%		7,424		18	%
	Real estate		10	%		4,810			11	%		3,806		9	%
	Total		100	%	$	45,452			100	%	$	42,440		100	%
Schedule of Fair Value of Plan Assets [Table Text Block]		Total			Quoted Prices in			Significant			Significant
					Active Markets for			Observable			Unobservable
					Identical Asset			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)
	Mutual fund	$	42,267		$	42,267		$	-		$	-
	Other investments		3,185			-			-			3,185
	Total	$	45,452		$	42,267		$	-		$	3,185
		Total			Quoted Prices in			Significant			Significant
					Active Markets for			Observable			Unobservable
					Identical Asset			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)
	Mutual fund	$	39,759		$	39,759		$	-		$	-
	Collective trust		2,681			-			2,681			-
	Total	$	42,440		$	39,759		$	2,681		$	-
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]		Other Investments
	Balance as of December 31, 2013	$	-
	Purchases		3,100
	Realized gains		85
	Balance as of December 31, 2014	$	3,185
Schedule of Expected Benefit Payments [Table Text Block]	Year
	2015		$	1,888
	2016			1,998
	2017			2,185
	2018			2,319
	2019			2,430
	2020 - 2024			14,500

Note_15_Share_Plans_Tables

Note 15 - Share Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]		2014			2013			2012
	Weighted average grant date fair value	$	26.35		$	16.3		$	12.13
	Assumptions:
	Expected stock price volatility		45	%		47	%		45	%
	Risk free interest rate		1.9	%		1.21	%		1.22	%
	Expected annual dividend per share	$	-		$	-		$	-
	Expected life of options (years)		6.25			6.25			6.25
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]		Number of			Weighted-			Weighted-			Aggregate
		Options			Average			Average			Intrinsic Value
					Exercise Price			Remaining Contractual			($ in thousands)
								Term (in years)
	Outstanding as of December 31, 2011		4,308,545		$	13.36			8.2		$	63,193
	Granted		256,112			21.28
	Exercised		(1,113,827	)		13.21
	Expired		-			-
	Forfeited		(10,788	)		20.52
	Outstanding as of December 31, 2012		3,440,042			8.44			9.5		$	87,001
	Granted		253,857			35.04
	Exercised		(703,326	)		6.05
	Expired		(1,625	)		20.94
	Forfeited		(51,647	)		17.02
	Outstanding as of December 31, 2013		2,937,301			5.74			9.5		$	148,369
	Granted		187,189			57.21
	Exercised		(549,282	)		3.44
	Expired		(259	)		15.94
	Forfeited		(32,810	)		12.68
	Outstanding as of December 31, 2014		2,542,139			9.94			8.5		$	96,518
	Exercisable as of December 31, 2014		1,210,861			4.22			8.4		$	52,014
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]		Shares			Weighted-
					Average Grant-
					Date Fair Value
	Non-vested as of December 31, 2011		489,302		$	13.93
	Granted		195,771			26.94
	Vested		-			-
	Forfeited		(20,002	)		11.96
	Non-vested as of December 31, 2012		665,071			17.75
	Granted		112,494			37.82
	Vested		(450,537	)		14.21
	Forfeited		(22,622	)		25.36
	Non-vested as of December 31, 2013		304,406			29.68
	Granted		115,473			54.35
	Vested		(105,123	)		28.31
	Forfeited		(47,472	)		42.31
	Non-vested as of December 31, 2014		267,284			38.72

Note_16_Commitments_and_Contin1

Note 16 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Year	Amount
	2015	$	2,585
	2016		2,567
	2017		1,571
	2018		264
	2019		-
	Total	$	6,987

Note_18_Quarterly_Financial_In1

Note 18 - Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]		Quarters Ended 2014
		Q1		Q2		Q3		Q4
	Net sales	$	342,008	$	362,609	$	352,305	$	403,997
	Gross profit		119,514		128,012		130,283		138,410
	Operating income		65,306		78,160		70,794		79,115
	Net income		34,701		54,025		36,497		49,390
	Net income per common share, basic:	$	0.51	$	0.79	$	0.53	$	0.72
	Net income per common share, diluted:	$	0.5	$	0.77	$	0.52	$	0.7
		Quarters Ended 2013
		Q1		Q2		Q3		Q4
	Net sales	$	399,572	$	346,688	$	363,269	$	376,236
	Gross profit		153,462		130,953		139,463		145,682
	Operating income		96,525		76,433		87,289		91,218
	Net income		50,674		28,254		47,093		48,518
	Net income per common share, basic:	$	0.75	$	0.41	$	0.69	$	0.71
	Net income per common share, diluted:	$	0.73	$	0.4	$	0.67	$	0.69

Note_19_Valuation_and_Qualifyi1

Note 19 - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Schedule of Valuation and Qualifying Accounts [Table Text Block]		Balance at Beginning of		Reserves			Additions			Charges to Reserve, Net (1)			Balance at End
		Year		Assumed in			Charged to						of Year
				Acquisition			Earnings
	Year ended December 31, 2014
	Allowance for doubtful accounts	$	2,658	$	209		$	672		$	(1,264	)	$	2,275
	Reserves for inventory		6,558		2,282			2,797			(2,250	)		9,387
	Valuation of deferred tax assets		1,021		-			364		-				1,385
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	1,166	$	496		$	1,037		$	(41	)	$	2,658
	Reserves for inventory		6,999		1,131			72			(1,644	)		6,558
	Valuation of deferred tax assets		806		(120	)		335		-				1,021
	Year ended December 31, 2012
	Allowance for doubtful accounts	$	789	$	383		$	204		$	(210	)	$	1,166
	Reserves for inventory		4,717		1,694			1,785			(1,197	)		6,999
	Valuation of deferred tax assets		-		827			(21	)	-				806

Note_2_Significant_Accounting_2

Note 2 - Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 2 - Significant Accounting Policies (Details) [Line Items]
Number of Major Customers	0	0	0
Percentage of Revenue Considered for Accounting of Major Customer	8.00%	6.00%	7.00%
Amortization of Financing Costs and Debt Discount Premium	$6,615,000	$4,772,000	$3,759,000
Deferred Costs Amortization Expense Next Twelve Months	7,012,000
Deferred Costs Amortization Expense Year Two	7,302,000
Deferred Costs Amortization Expense Year Three	7,550,000
Deferred Costs Amortization Expense Year Four	7,505,000
Deferred Costs Amortization Expense Year Five	7,534,000
Goodwill, Impairment Loss	0	0	0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	0	0
Advertising Expense	32,352,000	19,910,000	13,360,000
Research and Development Expense	31,494,000	29,271,000	23,499,000
Long-term Debt	1,080,599,000
Fair Value, Inputs, Level 2 [Member]
Note 2 - Significant Accounting Policies (Details) [Line Items]
Debt Instrument, Fair Value Disclosure	$1,048,165,000
Accounts Receivable [Member]
Note 2 - Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage	9.00%	11.00%

Note_2_Significant_Accounting_3

Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives	12 Months Ended
	Dec. 31, 2014
Land Improvements [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	10 years
Land Improvements [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	15 years
Building Improvements [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	10 years
Building Improvements [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	40 years
Leasehold Improvements [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	7 years
Leasehold Improvements [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	20 years
Machinery and Equipment [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	5 years
Machinery and Equipment [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	20 years
Dies and Tools [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	3 years
Dies and Tools [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	10 years
Vehicles [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	3 years
Vehicles [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	5 years
Office Equipment [Member] | Minimum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	3 years
Office Equipment [Member] | Maximum [Member]
Note 2 - Significant Accounting Policies (Details) - Property and Equipment Estimated Useful Lives [Line Items]
Estimated useful lives	10 years

Note_3_Acquisitions_Details

Note 3 - Acquisitions (Details) (USD $)	12 Months Ended			0 Months Ended		3 Months Ended		0 Months Ended	3 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 01, 2014	Aug. 01, 2013	Dec. 31, 2013	Sep. 30, 2013	Dec. 08, 2012	Jun. 30, 2013
Note 3 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$61,196	$116,113	$47,044
Goodwill	635,565	608,287	552,943			608,287
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	-4,877
Acquisition of MAC, Inc [Member]
Note 3 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				55,690
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill				49,378
Goodwill				25,898
Acquisition of Tower Light [Member]
Note 3 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired					80,239
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill							67,900
Goodwill							38,400
Business Combination, Consideration Transferred					85,812
Number of Countries in Which Subsidiary of Entity Built Leading Market Position in Equipment Rental Markets					50
Restricted Cash and Cash Equivalents					6,645
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred	7,641						-300
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	4,877
Additional Goodwill Recorded Under Revised Purchase Accounting Estimate						9,328
Acquisition of Ottomores [Member]
Note 3 - Acquisitions (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired								44,769
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill			16,100
Goodwill			5,050
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred									6,278
Increase (Decrease) in Intangible Assets Non-current									2,590
Goodwill, Period Increase (Decrease)									$439

Note_4_Derivative_Instruments_2

Note 4 - Derivative Instruments and Hedging Activities (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	19-May-14	Oct. 23, 2013	30-May-12
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Fair value of derivative contracts excluding impact of credit risk	($1,727)	$1,385
Cost of Sales [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	-629	-605	386
Commodity Contract [Member] | Maximum [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Higher Remaining Maturity Range	18 months
Foreign Exchange Contract [Member] | Maximum [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Higher Remaining Maturity Range	12 months
Foreign Exchange Contract [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Gain (Loss) on Derivative, Net	-149	-56
Derivative, Number of Instruments Held			0
Interest Rate Swap [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Number of Instruments Held						4
Number of New Contracts Entered				1	2
Interest Rate Swap Five [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Floor Interest Rate	0.75%
Interest Rate Swap Five [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Inception Date	23-Oct-13
Derivative Effective Date	1-Jul-14
Derivative, Maturity Date	1-Jul-18
Derivative, Notional Amount	100,000
Derivative, Fixed Interest Rate	1.74%
Interest Rate Swap Six [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Floor Interest Rate	0.75%
Interest Rate Swap Six [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Inception Date	23-Oct-13
Derivative Effective Date	1-Jul-14
Derivative, Maturity Date	1-Jul-18
Derivative, Notional Amount	100,000
Derivative, Fixed Interest Rate	1.74%
Interest Rate Swap Seven [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Floor Interest Rate	0.75%
Interest Rate Swap Seven [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) [Line Items]
Derivative, Inception Date	19-May-14
Derivative Effective Date	1-Jul-14
Derivative, Maturity Date	1-Jul-18
Derivative, Notional Amount	$100,000
Derivative, Fixed Interest Rate	1.62%

Note_4_Derivative_Instruments_3

Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commodity Forward Contract One [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts [Line Items]
Trade date	2-Oct-14
Effective date	1-Oct-14
Notional amount	$4,960
Termination date	31-Dec-15
Commodity Forward Contract Two [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts [Line Items]
Trade date	15-Oct-14
Effective date	1-Nov-14
Notional amount	4,637
Termination date	31-Dec-15
Commodity Forward Contract Three [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts [Line Items]
Trade date	1-Dec-14
Effective date	1-Dec-14
Notional amount	8,232
Termination date	31-Dec-15
Commodity Forward Contract Four [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts [Line Items]
Trade date		21-Jun-13
Effective date		1-Oct-13
Notional amount		2,169
Termination date		30-Jun-14
Commodity Forward Contract Five [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Commodity Forward Contracts [Line Items]
Trade date			29-Oct-12
Effective date			1-Jan-13
Notional amount			$3,472
Termination date			30-Sep-13

Note_4_Derivative_Instruments_4

Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Foreign Currency Contracts (Foreign Exchange Contract [Member])	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2013
In Thousands, unless otherwise specified	United Kingdom, Pounds	United Kingdom, Pounds	United States of America, Dollars
	GBP (£)	GBP (£)	USD ($)
Note 4 - Derivative Instruments and Hedging Activities (Details) - Outstanding Foreign Currency Contracts [Line Items]
British Pound Sterling (GBP) to Euro	£ 5,000	£ 4,000	$650
United States Dollar (USD) to Euro (in Dollars)	£ 5,000	£ 4,000	$650

Note_4_Derivative_Instruments_5

Note 4 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Interest Rate Swap [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]
Net derivatives	($1,045)	$1,236
Commodity Contract [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]
Net derivatives	-515	69
Foreign Exchange Contract [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Fair Value of Derivatives [Line Items]
Net derivatives	($149)	$56

Note_4_Derivative_Instruments_6

Note 4 - Derivative Instruments and Hedging Activities (Details) - Derivative Impact on Condensed Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Interest Expense [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Derivative Impact on Condensed Consolidated Statements of Income [Line Items]
Amount of loss recognized in accumulated other comprehensive loss	($1,420)	[1]	$774	[1]	$365	[1]
Amount of loss reclassified from accumulated other comprehensive loss into net income		[1]		[1]		[1]
Amount of gain (loss) recognized in net income on hedges (ineffective portion)		[1]		[1]		[1]
Interest Expense [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Derivative Impact on Condensed Consolidated Statements of Income [Line Items]
Amount of loss recognized in accumulated other comprehensive loss	0	[2]	0	[2]		[2]
Amount of loss reclassified from accumulated other comprehensive loss into net income		[2]	-2,381	[2]	-2,082	[2]
Amount of gain (loss) recognized in net income on hedges (ineffective portion)	0	[2]	2,973	[2]	1,695	[2]
Cost of Sales [Member] | Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Note 4 - Derivative Instruments and Hedging Activities (Details) - Derivative Impact on Condensed Consolidated Statements of Income [Line Items]
Amount of loss recognized in accumulated other comprehensive loss	0		0
Amount of loss reclassified from accumulated other comprehensive loss into net income	0
Amount of gain (loss) recognized in net income on hedges (ineffective portion)	($778)		($661)		$386
[1]	Amounts recorded for the year ended December 31, 2012 relate to the interest rate swap agreements outstanding prior to May 30, 2012, the date the hedging relationships for these agreements were terminated.
[2]	Amounts recorded for the years ended December 31, 2013 and 2012 relate to interest rate swap agreements outstanding as of May 30, 2012, the date the hedging relationships for these agreements were terminated.

Note_5_Fair_Value_Measurements2

Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	($1,045)	$1,236
Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	-515	69
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	-149	56
Interest Rate Swap [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	-1,045	1,236
Commodity Contract [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	-515	69
Foreign Exchange Contract [Member]
Note 5 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Fair value of derivatives	($149)	$56

Note_6_Accumulated_Other_Compr2

Note 6 - Accumulated Other Comprehensive Loss (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 6 - Accumulated Other Comprehensive Loss (Details) [Line Items]
Defined Benefit Plan, Actuarial Gain (Loss)	$14,791	($7,695)
Income Tax Expense (Benefit)	83,749	104,177	63,129
Interest Expense	47,215	54,435	49,114
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Note 6 - Accumulated Other Comprehensive Loss (Details) [Line Items]
Defined Benefit Plan, Actuarial Gain (Loss)	-106	-1,108
Income Tax Expense (Benefit)	-34	-414
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Note 6 - Accumulated Other Comprehensive Loss (Details) [Line Items]
Income Tax Expense (Benefit)		-109
Interest Expense		-2,490
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 6 - Accumulated Other Comprehensive Loss (Details) [Line Items]
Defined Benefit Plan, Actuarial Gain (Loss)	$106

Note_6_Accumulated_Other_Compr3

Note 6 - Accumulated Other Comprehensive Loss (Details) - Disclosure of Changes in Accumulated Other Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance - January 1, 2014	($2,415)		($14,496)
Ending Balance - December 31, 2014	-15,767		-2,415		-14,496
Other comprehensive loss before reclassifications	-13,424		9,006
Amounts reclassified from accumulated other comprehensive loss	72		3,075
Net current-period other comprehensive loss	-13,352		12,081		861
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance - January 1, 2014	1,204		-34
Ending Balance - December 31, 2014	-1,878		1,204		-34
Other comprehensive loss before reclassifications	-3,082		1,238
Net current-period other comprehensive loss	-3,082		1,238		-34
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance - January 1, 2014	-4,393		-12,081
Ending Balance - December 31, 2014	-13,243		-4,393		-12,081
Other comprehensive loss before reclassifications	-8,922		6,994
Amounts reclassified from accumulated other comprehensive loss	72	[1]	694	[2]
Net current-period other comprehensive loss	-8,850		7,688		-1,552
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance - January 1, 2014	774		-2,381
Ending Balance - December 31, 2014	-646		774		-2,381
Other comprehensive loss before reclassifications	-1,420		774
Amounts reclassified from accumulated other comprehensive loss			2,381	[3]
Net current-period other comprehensive loss	($1,420)		$774		$365
[1]	Represents the actuarial losses of $(106), net of tax benefit of $34, included in the computation of net periodic pension cost. See Note 14, "Benefit Plans," to the consolidated financial statements for additional information.
[2]	Represents the actuarial losses of $(1,108), net of tax benefit of $414, included in the computation of net periodic pension cost. See Note 14, "Benefit Plans," to the consolidated financial statements for additional information.
[3]	Represents amortization of unrealized losses on interest rate swaps to interest expense on the consolidated statements of comprehensive income of $(2,490), net of tax benefit of $109. See Note 11, "Credit Agreements," to the consolidated financial statements for additional information.

Note_7_Segment_Reporting_Detai

Note 7 - Segment Reporting (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 7 - Segment Reporting (Details) [Line Items]
Number of Operating Segments	1
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | UNITED STATES
Note 7 - Segment Reporting (Details) [Line Items]
Concentration Risk, Percentage	84.00%	88.00%	93.00%
Net Assets, Geographic Area [Member] | Geographic Concentration Risk [Member] | UNITED STATES
Note 7 - Segment Reporting (Details) [Line Items]
Concentration Risk, Percentage	91.00%	90.00%	94.00%

Note_7_Segment_Reporting_Detai1

Note 7 - Segment Reporting (Details) - Net Sales by Segment (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Net sales	$403,997	$352,305	$362,609	$342,008	$376,236	$363,269	$346,688	$399,572	$1,460,919	$1,485,765	$1,176,306
Residential Power Products [Member]
Revenue from External Customer [Line Items]
Net sales									722,206	843,727	705,444
Commercial and Industrial Power Products [Member]
Revenue from External Customer [Line Items]
Net sales									652,216	569,890	410,341
Other Products and Services [Member]
Revenue from External Customer [Line Items]
Net sales									$86,497	$72,148	$60,521

Note_8_Balance_Sheet_Details_D

Note 8 - Balance Sheet Details (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Disclosure Text Block Supplement [Abstract]
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	$12,497	$6,504

Note_8_Balance_Sheet_Details_D1

Note 8 - Balance Sheet Details (Details) - Inventories (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories [Abstract]
Raw material	$184,407	$183,787
Work-in-process	8,798	9,620
Finished goods	135,567	113,404
Reserves for excess and obsolescence	-9,387	-6,558
Total	$319,385	$300,253

Note_8_Balance_Sheet_Details_D2

Note 8 - Balance Sheet Details (Details) - Property and Equipment (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Gross property and equipment	$238,222	$206,731
Accumulated depreciation	-69,401	-60,341
Total	168,821	146,390
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	7,803	7,416
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	102,254	96,161
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	65,240	54,847
Dies and Tools [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	16,897	17,071
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	1,383	1,979
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	21,990	17,304
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	2,535	2,229
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$20,120	$9,724

Note_9_Goodwill_and_Intangible2

Note 9 - Goodwill and Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$21,024	$25,819	$45,867
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	20,965
Finite-Lived Intangible Assets, Amortization Expense, Year Two	19,015
Finite-Lived Intangible Assets, Amortization Expense, Year Three	15,624
Finite-Lived Intangible Assets, Amortization Expense, Year Four	11,422
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$9,600

Note_9_Goodwill_and_Intangible3

Note 9 - Goodwill and Intangible Assets (Details) - Carrying Amount of Goodwill (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Carrying Amount of Goodwill [Abstract]
Balance at beginning of year	$1,111,480	$1,056,136
Balance at beginning of year	-503,193	-503,193
Balance at beginning of year	608,287	552,943
Acquisitions of businesses, net	27,278	56,605
Acquisitions of businesses, net	0	0
Acquisitions of businesses, net	27,278	56,605
Sale of business, net	0	-1,261
Sale of business, net	0	0
Sale of business, net	0	-1,261
Balance at end of year	1,138,758	1,111,480
Balance at end of year	-503,193	-503,193
Balance at end of year	$635,565	$608,287

Note_9_Goodwill_and_Intangible4

Note 9 - Goodwill and Intangible Assets (Details) - Summary of Indefinite Lived Intangible Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Indefinite lived intangible assets
Trade names	$192,073	$182,585
Trade names	-9,389	-9,389
Trade names	$182,684	$173,196

Note_9_Goodwill_and_Intangible5

Note 9 - Goodwill and Intangible Assets (Details) - Summary of Finite Lived Intangible Assets (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$450,472	$436,883
Accumulated amortization	-348,278	-327,254
Amortized cost	102,194	109,629
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	0 years
Cost	8,775	8,775
Accumulated amortization	-8,775	-8,775
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	8 years
Cost	304,180	294,627
Accumulated amortization	-263,178	-251,863
Amortized cost	41,002	42,764
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	15 years
Cost	121,341	118,921
Accumulated amortization	-64,447	-56,503
Amortized cost	56,894	62,418
Unpatented Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	13 years
Cost	13,169	13,169
Accumulated amortization	-10,435	-9,064
Amortized cost	2,734	4,105
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	8 years
Cost	1,046	1,046
Accumulated amortization	-1,037	-912
Amortized cost	9	134
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization years	7 years
Cost	1,961	345
Accumulated amortization	-406	-137
Amortized cost	$1,555	$208

Note_10_Product_Warranty_Oblig2

Note 10 - Product Warranty Obligations (Details) - Reconciliation of Product Warranty Liability (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Product Warranty Liability [Abstract]
Balance at beginning of year	$33,734	$36,111	$24,643
Payments	-20,615	-18,484	-19,801
Provision for warranties issued	22,890	33,707	34,173
Changes in estimates for pre-existing warranties	-5,100	-17,600	-2,904
Balance at end of year	30,909	33,734	36,111
Balance at beginning of year	23,092	13,474	9,737
Deferred revenue on extended warranty contracts sold	7,343	11,998	5,547
Amortization of deferred revenue on extended warranty contracts	-3,242	-2,380	-1,810
Balance at end of year	$27,193	$23,092	$13,474

Note_10_Product_Warranty_Oblig3

Note 10 - Product Warranty Obligations (Details) - Deferred Product Obligations (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Product warranty liability
Current portion - other accrued liabilities	$24,143	$26,080
Long-term portion - other long-term liabilities	6,766	7,654
Total	30,909	33,734	36,111	24,643
Deferred revenue related to extended warranty
Current portion - other accrued liabilities	4,519	3,325
Long-term portion - other long-term liabilities	22,674	19,767
Total	$27,193	$23,092	$13,474	$9,737

Note_11_Credit_Agreements_Deta

Note 11 - Credit Agreements (Details) (USD $)	0 Months Ended	1 Months Ended			12 Months Ended			0 Months Ended			1 Months Ended		3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Feb. 09, 2012	Dec. 31, 2014	31-May-13	30-May-12	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 01, 2014	2-May-13	Feb. 11, 2013	Sep. 30, 2014	Apr. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2011
Note 11 - Credit Agreements (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)			$5	$6	$0	$5	$6
Gain on Change in Contractual Interest Rate					$16,014
Cash and Cash Equivalents, at Carrying Value		189,761			189,761	150,147	108,023									93,126
Deferred Finance Costs, Net	10,409			15,309
Payments for Fees	1,386			18,000
Debt Instrument, Fee Amount	1,407			801
Write off of Deferred Debt Issuance Cost	2,902			9,198
Repayments of Long-term Debt		25,000
Short-term Debt		5,359			5,359	9,575
Foreign Line of Credit [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Short-term Debt		5,359			5,359	9,575
Net Debt Leverage Ratio Threshold [Member] | Term Loan [Member] | Base Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.50%
Net Debt Leverage Ratio Threshold [Member] | Term Loan [Member] | Adjusted LIBOR Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					2.50%
Term Loan [Member] | Base Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				4.00%	1.75%
Term Loan [Member] | Adjusted LIBOR Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				5.00%	2.75%
Term Loan [Member] | LIBOR Floor Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate				1.25%	0.75%
Term Loan [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			1,200,000	900,000
Uncommitted Incremental Term Loan Facility			300,000	125,000
Percentage of Term Loan Amortization					0.25%
Net Debt Leverage Ratio Threshold					3
Net Debt Leverage Ratio Achieved					3			3
Debt Instrument, Interest Rate, Increase (Decrease)													0.25%
Gain on Change in Contractual Interest Rate													16,014
Write off of Deferred Debt Issuance Cost					2,084									924	1,839
Repayments of Long-term Debt									30,000	80,000	50,000	12,000
ABL Revolving Credit Facility [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				150,000
Revolving Credit Facility [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	150,000
Deferred Finance Costs, Net			21,824
Payments for Fees			13,797
Debt Instrument, Fee Amount			7,100
Write off of Deferred Debt Issuance Cost			5,473
Tranche A Term Loan Facility [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	325,000
Tranche B Term Loan Facility [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	250,000
ABL Revolving Credit Facility [Member] | Base Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					1.00%
ABL Revolving Credit Facility [Member] | Adjusted LIBOR Rate [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate					2.00%
ABL Revolving Credit Facility [Member]
Note 11 - Credit Agreements (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			150,000
Debt Instrument, Extension Period			1 year
Fixed Charge Coverage Ratio in Multiple					1
Qualified Cash		5,000			5,000
Percentage of Aggregate Commitments					10.00%
Amount Availability Under Agreements as per Covenants					10,000
Long-term Line of Credit		0			0
Line of Credit Facility, Remaining Borrowing Capacity		$148,500			$148,500

Note_11_Credit_Agreements_Deta1

Note 11 - Credit Agreements (Details) - Short-term Borrowings (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Short-term Debt [Line Items]
Short-term borrowings	$5,359	$9,575
ABL Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Short-term borrowings	0	0
Other Lines of Credit [Member]
Short-term Debt [Line Items]
Short-term borrowings	$5,359	$9,575

Note_11_Credit_Agreements_Deta2

Note 11 - Credit Agreements (Details) - Long-term Borrowings (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Long-term Borrowings [Abstract]
Term loan	$1,104,000	$1,197,000
Discount on debt	-23,861	-12,735
Capital lease obligation	2,059	2,529
Other	460	1,026
Total	1,082,658	1,187,820
Less current portion of debt	389	12,286
Less current portion of capital lease obligation	168	185
Total	$1,082,101	$1,175,349

Note_11_Credit_Agreements_Deta3

Note 11 - Credit Agreements (Details) - Maturities of long-term Borrowings Outstanding (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Maturities of long-term Borrowings Outstanding [Abstract]
2015	$557
2016	254
2017	185
2018	191
After 2018	1,105,332
Total	$1,106,519

Note_12_Earnings_Per_Share_Det

Note 12 - Earnings Per Share (Details) (Equity Option [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Equity Option [Member]
Note 12 - Earnings Per Share (Details) [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	81,600	10,300	363,000

Note_12_Earnings_Per_Share_Det1

Note 12 - Earnings Per Share (Details) - Reconciliation of Basic and Diluted Earnings Per Share (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Reconciliation of Basic and Diluted Earnings Per Share [Abstract]
Net income (numerator) (in Dollars)	$49,390	$36,497	$54,025	$34,701	$48,518	$47,093	$28,254	$50,674	$174,613		$174,539		$93,223
Weighted average shares (denominator)
Basic									68,538,248		68,081,632		67,360,632
Dilutive effect of stock compensation awards (1)									1,632,796	[1]	1,585,897	[1]	1,832,506	[1]
Diluted									70,171,044		69,667,529		69,193,138
Net income per share
Basic (in Dollars per share)	$0.72	$0.53	$0.79	$0.51	$0.71	$0.69	$0.41	$0.75	$2.55		$2.56		$1.38
Diluted (in Dollars per share)	$0.70	$0.52	$0.77	$0.50	$0.69	$0.67	$0.40	$0.73	$2.49		$2.51		$1.35
[1]	Excludes approximately 81,600, 10,300 and 363,000 stock options and restricted stock awards for the years ended December 31, 2014, 2013 and 2012, respectively, as the impact of such awards was anti-dilutive.

Note_13_Income_Taxes_Details

Note 13 - Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Tax Credit Carryforward, State Research and Development	$15,610
Tax Credit Carryforward, State Manufacturing	2,424
Unrecognized Tax Benefits, Interest on Income Taxes Expense	86
Unrecognized Tax Benefits, Income Tax Penalties Expense	263
Undistributed Earnings of Foreign Subsidiaries	$9,139

Note_13_Income_Taxes_Details_P

Note 13 - Income Taxes (Details) - Provision for Income Taxes (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$38,161	$48,287	$34,170
State	1,645	5,648	3,854
Foreign	5,701	2,214	81
	45,507	56,149	38,105
Deferred:
Federal	42,474	42,003	21,972
State	-3,134	5,523	3,048
Foreign	-1,462	167	25
	37,878	47,693	25,045
Change in valuation allowance	364	335	-21
Provision for income taxes	$83,749	$104,177	$63,129

Note_13_Income_Taxes_Details_C

Note 13 - Income Taxes (Details) - Components of Deferred Tax Assets and Liabilities (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Goodwill and intangible assets	$23,624	$74,992
Accrued expenses	18,191	24,263
Deferred revenue	7,945	4,413
Inventories	6,306	4,483
Pension obligations	8,738	4,043
Stock-based compensation	8,628	6,609
Operating loss and credit carryforwards	10,047	976
Other	4,299	2,089
Valuation allowance	-1,385	-1,021
Total deferred tax assets	86,393	120,847
Deferred tax liabilities:
Depreciation	18,535	15,163
Debt refinancing costs	10,925	7,494
Prepaid expenses	1,032	1,183
Total deferred tax liabilities	30,492	23,840
Net deferred tax assets	$55,901	$97,007

Note_13_Income_Taxes_Details_N

Note 13 - Income Taxes (Details) - Net Current and Noncurrent Components of Deferred Taxes (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Net Current and Noncurrent Components of Deferred Taxes [Abstract]
Net current deferred tax assets	$22,841	$26,869
Net long-term deferred tax assets	47,894	86,125
Net long-term deferred tax liabilities	-13,449	-14,966
Valuation allowance	-1,385	-1,021
Net deferred tax assets	$55,901	$97,007

Note_13_Income_Taxes_Details_U

Note 13 - Income Taxes (Details) - Unrecognized Tax Benefits (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Unrecognized Tax Benefits [Abstract]
Unrecognized tax benefit, beginning of period	$0
Increase in unrecognized tax benefit for positions taken in current period	6,394
Unrecognized tax benefit, end of period	$6,394

Note_13_Income_Taxes_Details_R

Note 13 - Income Taxes (Details) - Reconciliation of Statutory and Effective Tax Rates	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Statutory and Effective Tax Rates [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
State taxes	3.10%	3.70%	4.10%
Valuation allowance	0.20%	0.20%
Research and development credits	-5.00%	-0.60%	-0.20%
Other	-0.90%	-0.90%	1.50%
Effective tax rate	32.40%	37.40%	40.40%

Note_14_Benefit_Plans_Details

Note 14 - Benefit Plans (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 14 - Benefit Plans (Details) [Line Items]
Employer Contribution Under Medical and Dental Plan	$11,701	$9,500	$8,741
Other Labor-related Expenses	2,700
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	50.00%
Defined Contribution Plan Percentage of Eligible Compensation	6.00%
Defined Contribution Plan, Cost Recognized	3,400	3,300	3,000
Defined Benefit Plan, Actuarial Gain (Loss)	14,791	-7,695
Defined Benefit Plan, Amount to be Amortized from Accumulated Other Comprehensive Income (Loss) Next Fiscal Year	1,228
Defined Benefit Plan, Target Plan Asset Allocations	100.00%
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	1,187
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 14 - Benefit Plans (Details) [Line Items]
Defined Benefit Plan, Actuarial Gain (Loss)	$106
Equity and Real Estate [Member] | Minimum [Member]
Note 14 - Benefit Plans (Details) [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	65.00%
Equity and Real Estate [Member] | Maximum [Member]
Note 14 - Benefit Plans (Details) [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations	85.00%

Note_14_Benefit_Plans_Details_

Note 14 - Benefit Plans (Details) - Accumulated Benefit Obligation (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Benefit Obligation [Abstract]
Accumulated benefit obligation at end of period	$68,376	$52,825
Change in projected benefit obligation
Projected benefit obligation at beginning of period	52,825	59,744
Interest cost	2,591	2,423	2,453
Net actuarial loss (gain)	14,791	-7,695
Fair value of plan assets at beginning of period	42,440	36,570
Actual return on plan assets	3,110	6,465
Company contributions	1,733	1,052
Benefits paid	1,831	-1,647
Fair value of plan assets at end of period	45,452	42,440	36,570
Funded status: accrued pension liability included in other long-term liabilities	22,924	-10,385
Projected benefit obligation at end of period	68,376	52,825	59,744
Net actuarial loss	$13,243	($4,393)

Note_14_Benefit_Plans_Details_1

Note 14 - Benefit Plans (Details) - Components of Net Periodic (Benefit) Cost (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components of net periodic pension (benefit) cost:
Interest cost	$2,591	$2,423	$2,453
Expected return on plan assets	-2,933	-2,520	-2,398
Amortization of net loss	106	1,108	909
Net periodic pension (benefit) cost	($236)	$1,011	$964

Note_14_Benefit_Plans_Details_2

Note 14 - Benefit Plans (Details) - Weighted-average Assumptions Used to Determine Benefit Obligations	Dec. 31, 2014		Dec. 31, 2013
Note 14 - Benefit Plans (Details) - Weighted-average Assumptions Used to Determine Benefit Obligations [Line Items]
Rate of compensation increase (1)		[1]		[1]
Pension Plan [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Assumptions Used to Determine Benefit Obligations [Line Items]
Discount rate	3.97%		4.98%
Other Pension Plan [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Assumptions Used to Determine Benefit Obligations [Line Items]
Discount rate	3.99%		5.01%
[1]	No compensation increase was assumed as the plans were frozen effective December 31, 2008.

Note_14_Benefit_Plans_Details_3

Note 14 - Benefit Plans (Details) - Weighted-average Assumptions Used to Determine Net Periodic Pension (Benefit) Cost	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Weighted-average Assumptions Used to Determine Net Periodic Pension (Benefit) Cost [Abstract]
Discount rate	5.01%		4.14%		4.65%
Expected long-term rate of return on plan assets	6.88%		6.95%		7.57%
Rate of compensation increase (1)		[1]		[1]		[1]
[1]	No compensation increase was assumed as the plans were frozen effective December 31, 2008.

Note_14_Benefit_Plans_Details_4

Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation [Line Items]
Weighted-average asset allocation target percentage	100.00%
Weighted-average asset allocation, dollars (in Dollars)	$45,452	$42,440	$36,570
Weighted-average asset allocation, percentage	100.00%	100.00%
Fixed Income Funds [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation [Line Items]
Weighted-average asset allocation target percentage	24.00%
Weighted-average asset allocation, dollars (in Dollars)	7,400	7,307
Weighted-average asset allocation, percentage	16.00%	17.00%
Domestic Equity [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation [Line Items]
Weighted-average asset allocation target percentage	49.00%
Weighted-average asset allocation, dollars (in Dollars)	24,373	23,903
Weighted-average asset allocation, percentage	54.00%	56.00%
International Equity [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation [Line Items]
Weighted-average asset allocation target percentage	17.00%
Weighted-average asset allocation, dollars (in Dollars)	8,869	7,424
Weighted-average asset allocation, percentage	19.00%	18.00%
Real Estate [Member]
Note 14 - Benefit Plans (Details) - Weighted-average Asset Allocation [Line Items]
Weighted-average asset allocation target percentage	10.00%
Weighted-average asset allocation, dollars (in Dollars)	$4,810	$3,806
Weighted-average asset allocation, percentage	11.00%	9.00%

Note_14_Benefit_Plans_Details_5

Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	$45,452	$42,440	$36,570
Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	42,267	39,759
Mutual Fund [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	42,267	39,759
Other Investment [Member] | Fair Value, Inputs, Level 3 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	3,185
Other Investment [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	3,185
Collective Trust [Member] | Fair Value, Inputs, Level 2 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets		2,681
Collective Trust [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets		2,681
Fair Value, Inputs, Level 1 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	42,267	39,759
Fair Value, Inputs, Level 2 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets		2,681
Fair Value, Inputs, Level 3 [Member]
Note 14 - Benefit Plans (Details) - Fair Value of Pension Plan's Assets [Line Items]
Fair value of plan assets	$3,185

Note_14_Benefit_Plans_Details_6

Note 14 - Benefit Plans (Details) - Reconciliation of Level 3 Assets (Other Investment [Member], Fair Value, Inputs, Level 3 [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Other Investment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as of December 31	$3,185
Purchases	3,100
Realized gains	$85

Note_14_Benefit_Plans_Details_7

Note 14 - Benefit Plans (Details) - Expected Benefit Payments (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Expected Benefit Payments [Abstract]
2015	$1,888
2016	1,998
2017	2,185
2018	2,319
2019	2,430
2020 - 2024	$14,500

Note_15_Share_Plans_Details

Note 15 - Share Plans (Details) (USD $)	1 Months Ended		12 Months Ended					1 Months Ended
In Thousands, except Share data, unless otherwise specified	31-May-13	30-May-12	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 21, 2013	Jun. 29, 2012	Feb. 10, 2010
Note 15 - Share Plans (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)										9,100,000
Allocated Share-based Compensation Expense			$12,612	$12,368	$10,780
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)			$57.21	$35.04	$21.28
Common Stock, Dividends, Per Share, Declared (in Dollars per share)	$5	$6	$0	$5	$6
Payments Related to Tax Withholding for Share-based Compensation			12,181	15,020	6,425
Employee Stock Option [Member] | Minimum [Member]
Note 15 - Share Plans (Details) [Line Items]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)			$42.20	$29.81	$15.94
Employee Stock Option [Member] | Maximum [Member]
Note 15 - Share Plans (Details) [Line Items]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)			$59.01	$48.36	$32.05
Employee Stock Option [Member]
Note 15 - Share Plans (Details) [Line Items]
Allocated Share-based Compensation Expense			8,509	9,034	6,835
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years	4 years	4 years	5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years	10 years	10 years	10 years	10 years
Shares Paid for Tax Withholding for Share Based Compensation (in Shares)			235,644	323,427	667,041
Payments Related to Tax Withholding for Share-based Compensation			10,411	8,449	6,425
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized			7,794
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 146 days
Restricted Stock [Member]
Note 15 - Share Plans (Details) [Line Items]
Allocated Share-based Compensation Expense			4,103	3,074	3,645
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 years
Shares Paid for Tax Withholding for Share Based Compensation (in Shares)			34,854	163,458	0
Payments Related to Tax Withholding for Share-based Compensation			1,770	6,571	0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized			5,394
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			2 years 36 days
Special Cash Dividend 2013 [Member]
Note 15 - Share Plans (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)								$5
Special Cash Dividend 2012 [Member]
Note 15 - Share Plans (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)									$6
Board of Directors [Member]
Note 15 - Share Plans (Details) [Line Items]
Deferred Compensation Arrangement with Individual, Shares Issued (in Shares)			8,869	7,291	10,864
Deferred Compensation Arrangement with Individual, Compensation Expense			$509	$260	$300

Note_15_Share_Plans_Details_We

Note 15 - Share Plans (Details) - Weighted-average Assumptions used in the Black-Scholes-Merton Option Pricing Model (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted-average Assumptions used in the Black-Scholes-Merton Option Pricing Model [Abstract]
Weighted average grant date fair value	$26.35	$16.30	$12.13
Assumptions:
Expected stock price volatility	45.00%	47.00%	45.00%
Risk free interest rate	1.90%	1.21%	1.22%
Expected annual dividend per share	$0	$0	$0
Expected life of options (years)	6 years 3 months	6 years 3 months	6 years 3 months

Note_15_Share_Plans_Details_Su

Note 15 - Share Plans (Details) - Summary of Stock Option Activity (USD $)	0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Stock Option Activity [Abstract]
Outstanding as of December 31		2,542,139	2,937,301	3,440,042	4,308,545
Outstanding as of December 31		$9.94	$5.74	$8.44	$13.36
Outstanding as of December 31	8 years 73 days	8 years 6 months	9 years 6 months	9 years 6 months
Outstanding as of December 31		$96,518	$148,369	$87,001	$63,193
Exercisable as of December 31, 2014		1,210,861
Exercisable as of December 31, 2014		$4.22
Exercisable as of December 31, 2014		8 years 146 days
Exercisable as of December 31, 2014		$52,014
Granted		187,189	253,857	256,112
Granted		$57.21	$35.04	$21.28
Exercised		-549,282	-703,326	-1,113,827
Exercised		$3.44	$6.05	$13.21
Expired		-259	-1,625	0
Expired		$15.94	$20.94	$0
Forfeited		-32,810	-51,647	-10,788
Forfeited		$12.68	$17.02	$20.52

Note_15_Share_Plans_Details_Su1

Note 15 - Share Plans (Details) - Summary of Restricted Share Awards Activity (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]
Note 15 - Share Plans (Details) - Summary of Restricted Share Awards Activity [Line Items]
Non-vested as of December 31	267,284	304,406	665,071	489,302
Non-vested as of December 31	$38.72	$29.68	$17.75	$13.93
Granted	115,473	112,494	195,771
Granted	$54.35	$37.82	$26.94
Vested	-105,123	-450,537	0
Vested	$28.31	$14.21	$0
Forfeited	-47,472	-22,622	-20,002
Forfeited	$42.31	$25.36	$11.96

Note_16_Commitments_and_Contin2

Note 16 - Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 16 - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Rent Expense, Net	$4,102	$2,457	$2,870
Amount Financed by Dealers	$26,100	$24,300
Minimum [Member]
Note 16 - Commitments and Contingencies (Details) [Line Items]
Lease Term	3 years
Maximum [Member]
Note 16 - Commitments and Contingencies (Details) [Line Items]
Lease Term	5 years

Note_16_Commitments_and_Contin3

Note 16 - Commitments and Contingencies (Details) - Minimum Rental Payments (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Minimum Rental Payments [Abstract]
2015	$2,585
2016	2,567
2017	1,571
2018	264
2019	0
Total	$6,987

Note_17_Special_Cash_Dividends1

Note 17 - Special Cash Dividends (Details) (USD $)	1 Months Ended		12 Months Ended			1 Months Ended
	31-May-13	30-May-12	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 29, 2012	Jun. 21, 2013
Note 17 - Special Cash Dividends (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)	$5	$6	$0	$5	$6
Share-based Compensation			$12,612,000	$12,368,000	$10,780,000
Special Cash Dividend 2012 [Member]
Note 17 - Special Cash Dividends (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)						$6
Dividends, Common Stock, Cash						404,332,000
Special Cash Dividends Declared but Unpaid			731,000
Share-based Compensation					0
Special Cash Dividend 2013 [Member]
Note 17 - Special Cash Dividends (Details) [Line Items]
Common Stock, Dividends, Per Share, Declared (in Dollars per share)							$5
Dividends, Common Stock, Cash							340,772,000
Special Cash Dividends Declared but Unpaid			810,000
Retained Earnings Dividend Declaration Date							4,934,000
Share-based Compensation				$0

Note_18_Quarterly_Financial_In2

Note 18 - Quarterly Financial Information (Unaudited) (Details) - Unaudited Quarterly Financial Information (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unaudited Quarterly Financial Information [Abstract]
Net sales	$403,997	$352,305	$362,609	$342,008	$376,236	$363,269	$346,688	$399,572	$1,460,919	$1,485,765	$1,176,306
Gross profit	138,410	130,283	128,012	119,514	145,682	139,463	130,953	153,462	516,219	569,560	440,400
Operating income	79,115	70,794	78,160	65,306	91,218	87,289	76,433	96,525	293,375	351,465	223,555
Net income	$49,390	$36,497	$54,025	$34,701	$48,518	$47,093	$28,254	$50,674	$174,613	$174,539	$93,223
Net income per common share, basic: (in Dollars per share)	$0.72	$0.53	$0.79	$0.51	$0.71	$0.69	$0.41	$0.75	$2.55	$2.56	$1.38
Net income per common share, diluted: (in Dollars per share)	$0.70	$0.52	$0.77	$0.50	$0.69	$0.67	$0.40	$0.73	$2.49	$2.51	$1.35

Note_19_Valuation_and_Qualifyi2

Note 19 - Valuation and Qualifying Accounts (Details) - Schedule of Valuation and Qualifying Accounts (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Allowance for Doubtful Accounts [Member]
Note 19 - Valuation and Qualifying Accounts (Details) - Schedule of Valuation and Qualifying Accounts [Line Items]
Balance at Beginning of Year	$2,658		$1,166		$789
Reserves Assumed in Acquisition	209		496		383
Additions Charged to Earnings	672		1,037		204
Charges to Reserve, Net	-1,264	[1]	-41	[1]	-210	[1]
Balance at End of Year	2,275		2,658		1,166
Inventory Valuation Reserve [Member]
Note 19 - Valuation and Qualifying Accounts (Details) - Schedule of Valuation and Qualifying Accounts [Line Items]
Balance at Beginning of Year	6,558		6,999		4,717
Reserves Assumed in Acquisition	2,282		1,131		1,694
Additions Charged to Earnings	2,797		72		1,785
Charges to Reserve, Net	-2,250	[1]	-1,644	[1]	-1,197	[1]
Balance at End of Year	9,387		6,558		6,999
Valuation Allowance of Deferred Tax Assets [Member]
Note 19 - Valuation and Qualifying Accounts (Details) - Schedule of Valuation and Qualifying Accounts [Line Items]
Balance at Beginning of Year	1,021		806
Reserves Assumed in Acquisition			-120		827
Additions Charged to Earnings	364		335		-21
Balance at End of Year	$1,385		$1,021		$806
[1]	Deductions from the allowance for doubtful accounts equal accounts receivable written off, less recoveries, against the allowance. Deductions from the reserves for inventory excess and obsolete items equal inventory written off against the reserve as items were disposed of.