IPGP-2015.06.30-10Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________________________

FORM 10-Q

__________________________________________



ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2015



¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number 001-33155

IPG PHOTONICS CORPORATION

(Exact name of registrant as specified in its charter)



Delaware	04-3444218
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification Number)

50 Old Webster Road, Oxford, Massachusetts	01540
(Address of principal executive offices)	(Zip code)

(508) 373-1100

(Registrant’s telephone number, including area code)

__________________________________________

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES ý NO ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data file required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). YES ý NO ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer", "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.



Large Accelerated Filer	ý	Accelerated Filer	¨
Non-Accelerated Filer	¨	Smaller Reporting Company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YES ¨ NO ý

As of July 28, 2015, there were 52,724,374 shares of the registrant's common stock issued and outstanding.

TABLE OF CONTENTS



	Page
Part I. Financial Information	1
Item 1. Financial Statements	1
Consolidated Balance Sheets: June 30, 2015 and December 31, 2014	1
Consolidated Statements of Income: Three and Six Months Ended June 30, 2015 and 2014	2
Consolidated Statements of Comprehensive Income: Three and Six Months Ended June 30, 2015 and 2014	3
Consolidated Statements of Cash Flows: Six Months Ended June 30, 2015 and 2014	4
Consolidated Statements of Equity: Six Months Ended June 30, 2015 and 2014	5
Notes to Consolidated Financial Statements	6
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations	12
Item 3. Quantitative and Qualitative Disclosures About Market Risk	19
Item 4. Controls and Procedures	20
Part II. Other Information	21
Item 1. Legal Proceedings	21
Item 1A. Risk Factors	21
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	21
Item 3. Defaults Upon Senior Securities	21
Item 4. Mine Safety Disclosures	21
Item 5. Other Information	21
Item 6. Exhibits	21
Signatures	23
EX-31.1 CERTIFICATION OF CEO PURSUANT TO RULE 13a-14(a)
EX-31.2 CERTIFICATION OF CFO PURSUANT TO RULE 13a-14(a)
EX-32 CERTIFICATION OF CEO AND CFO PURSUANT TO SECTION 1350
EX-101.INS XBRL INSTANCE DOCUMENT
EX-101.SCH XBRL TAXONOMY EXTENSION SCHEMA
EX-101.CAL XBRL TAXONOMY EXTENSION CALCULATION LINKBASE
EX-101.LAB XBRL TAXONOMY EXTENSION LABEL LINKBASE
EX-101.PRE XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
EX-101.DEF XBRL TAXONOMY EXTENSION DEFINITION LINKBASE

Table of Contents

PART I-FINANCIAL INFORMATION

ITEM 1. UNAUDITED INTERIM FINANCIAL STATEMENTS

IPG PHOTONICS CORPORATION

CONSOLIDATED BALANCE SHEETS



	June 30,			December 31,
	2015			2014
	(In thousands, except share and per share data)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents	$	571,508		$	522,150
Accounts receivable, net	169,828			143,109
Inventories	190,848			171,009
Prepaid income taxes	27,822			20,967
Prepaid expenses and other current assets	24,241			21,295
Deferred income taxes, net	18,123			15,308
Total current assets	1,002,370			893,838
DEFERRED INCOME TAXES, NET	7,495			5,438
GOODWILL	516			455
INTANGIBLE ASSETS, NET	14,013			9,227
PROPERTY, PLANT AND EQUIPMENT, NET	288,553			275,082
OTHER ASSETS	21,594			26,847
TOTAL	$	1,334,541		$	1,210,887
LIABILITIES AND EQUITY
CURRENT LIABILITIES:
Revolving line-of-credit facilities	$	1,600		$	2,631
Current portion of long-term debt	2,000			13,333
Accounts payable	21,537			17,141
Accrued expenses and other liabilities	68,274			64,057
Deferred income taxes, net	3,670			3,241
Income taxes payable	28,690			21,672
Total current liabilities	125,771			122,075
DEFERRED INCOME TAXES AND OTHER LONG-TERM LIABILITIES	26,348			22,584
LONG-TERM DEBT, NET OF CURRENT PORTION	18,667			19,667
Total liabilities	170,786			164,326
COMMITMENTS AND CONTINGENCIES (NOTE 12)
IPG PHOTONICS CORPORATION STOCKHOLDERS' EQUITY:
Common stock, $0.0001 par value, 175,000,000 shares authorized; 52,721,014 shares issued and outstanding at June 30, 2015; 52,369,688 shares issued and outstanding at December 31, 2014	5			5
Additional paid-in capital	591,718			567,617
Retained earnings	709,860			591,202
Accumulated other comprehensive loss	(139,262		)	(112,263		)
Total IPG Photonics Corporation stockholders' equity	1,162,321			1,046,561
NONCONTROLLING INTERESTS	1,434			—
Total equity	1,163,755			1,046,561
TOTAL	$	1,334,541		$	1,210,887

See notes to consolidated financial statements.

Table of Contents

IPG PHOTONICS CORPORATION

CONSOLIDATED STATEMENTS OF INCOME



	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
	(in thousands, except per share data)
NET SALES	$	235,138		$	192,204		$	434,098		$	362,779
COST OF SALES	106,435			87,977			197,568			169,268
GROSS PROFIT	128,703			104,227			236,530			193,511
OPERATING EXPENSES:
Sales and marketing	7,962			8,047			15,511			15,212
Research and development	15,114			13,362			29,344			26,146
General and administrative	15,017			13,124			27,795			26,040
Loss (gain) on foreign exchange	3,167			945			(5,585		)	(425		)
Total operating expenses	41,260			35,478			67,065			66,973
OPERATING INCOME	87,443			68,749			169,465			126,538
OTHER INCOME (EXPENSE), Net:
Interest expense, net	(112		)	—			(296		)	(139		)
Other income, net	161			239			246			573
Total other income (expense)	49			239			(50		)	434
INCOME BEFORE PROVISION FOR INCOME TAXES	87,492			68,988			169,415			126,972
PROVISION FOR INCOME TAXES	(26,248		)	(20,705		)	(50,825		)	(38,158		)
NET INCOME	61,244			48,283			118,590			88,814
LESS: NET LOSS ATTRIBUTABLE TO NONCONTROLLING INTERESTS	(55		)	—			(68		)	—
NET INCOME ATTRIBUTABLE TO IPG PHOTONICS CORPORATION	$	61,299		$	48,283		$	118,658		$	88,814
NET INCOME ATTRIBUTABLE TO IPG PHOTONICS CORPORATION PER SHARE:
Basic	$	1.16		$	0.93		$	2.26		$	1.71
Diluted	$	1.15		$	0.92		$	2.22		$	1.68
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic	52,657			52,068			52,572			52,019
Diluted	53,442			52,769			53,355			52,747

See notes to consolidated financial statements.

Table of Contents

IPG PHOTONICS CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME



	Three Months Ended June 30,					Six Months Ended June 30,
	2015			2014		2015			2014
	(In thousands)
Net income	$	61,244		$	48,283	$	118,590		$	88,814
Other comprehensive income, net of tax:
Translation adjustments	11,225			6,683		(27,094		)	(5,983		)
Unrealized gain on derivatives	52			44		95			83
Total other comprehensive loss	11,277			6,727		(26,999		)	(5,900		)
Comprehensive income	72,521			55,010		91,591			82,914
Comprehensive loss attributable to noncontrolling interest	(55		)	—		(68		)	—
Comprehensive income attributable to IPG Photonics Corporation	$	72,576		$	55,010	$	91,659		$	82,914

See notes to consolidated financial statements.

Table of Contents

IPG PHOTONICS CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS



	Six Months Ended June 30,
	2015			2014
	(In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$	118,590		$	88,814
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,176			17,088
Deferred income taxes	(2,118		)	(4,893		)
Stock-based compensation	8,862			7,172
Realized and unrealized gains on cash and cash equivalents and unrealized gains on foreign currency transactions	(3,412		)	(2,225		)
Other	95			335
Provisions for inventory, warranty & bad debt	18,804			12,207
Changes in assets and liabilities that (used) provided cash:
Accounts receivable	(31,748		)	(20,720		)
Inventories	(33,211		)	(14,988		)
Prepaid expenses and other current assets	1,945			436
Accounts payable	4,422			(2,684		)
Accrued expenses and other liabilities	(2,397		)	(170		)
Income and other taxes payable	7,067			(1,071		)
Tax benefit from exercise of employee stock options	(5,665		)	(2,426		)
Net cash provided by operating activities	101,410			76,875
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of and deposits on property, plant and equipment	(32,606		)	(45,781		)
Proceeds from sales of property, plant and equipment	139			254
Acquisition of businesses, net of cash acquired	(4,958		)	—
Other	86			42
Net cash used in investing activities	(37,339		)	(45,485		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from line-of-credit facilities	9,432			15,376
Payments on line-of-credit facilities	(10,209		)	(15,911		)
Principal payments on long-term borrowings	(12,333		)	(667		)
Exercise of employee stock options and issuances under employee stock purchase plan	9,574			3,379
Tax benefit from exercise of employee stock options	5,665			2,426
Net cash provided by financing activities	2,129			4,603
EFFECT OF CHANGES IN EXCHANGE RATES ON CASH AND CASH EQUIVALENTS	(16,842		)	(1,337		)
NET INCREASE IN CASH AND CASH EQUIVALENTS	49,358			34,656
CASH AND CASH EQUIVALENTS — Beginning of period	522,150			448,776
CASH AND CASH EQUIVALENTS — End of period	$	571,508		$	483,432
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest	$	533		$	223
Cash paid for income taxes	$	44,728		$	41,525
Non-cash transactions:
Demonstration units transferred from inventory to other assets	$	1,479		$	1,318
Inventory transferred to machinery and equipment	$	1,072		$	1,030
Additions to property, plant and equipment included in accounts payable	$	406		$	1,209

See notes to consolidated financial statements.

Table of Contents

IPG PHOTONICS CORPORATION

CONSOLIDATED STATEMENTS OF EQUITY



	Six Months Ended June 30,
	2015				2014
	(In thousands, except share and per share data)
	Shares	Amount			Shares	Amount
COMMON STOCK
Balance, beginning of year	52,369,688	$	5		51,930,978	$	5
Exercise of stock options	333,703	—			172,786	—
Common stock issued under employee stock purchase plan	17,623	—			17,458	—
Balance, end of period	52,721,014	5			52,121,222	5
ADDITIONAL PAID-IN CAPITAL
Balance, beginning of year		567,617				538,908
Stock-based compensation		8,862				7,172
Exercise of stock options and related tax benefit from exercise		14,131				4,784
Common stock issued under employee stock purchase plan		1,108				1,021
Balance, end of period		591,718				551,885
RETAINED EARNINGS
Balance, beginning of year		591,202				390,757
Net income attributable to IPG Photonics Corporation		118,658				88,814
Balance, end of period		709,860				479,571
ACCUMULATED OTHER COMPREHENSIVE LOSS
Balance, beginning of year		(112,263		)		(1,701		)
Translation adjustments		(27,094		)		(5,983		)
Change in unrealized gain on derivatives, net of tax		95				83
Balance, end of period		(139,262		)		(7,601		)
TOTAL IPG PHOTONICS CORPORATION STOCKHOLDERS' EQUITY		$	1,162,321			$	1,023,860
NONCONTROLLING INTERESTS
Balance, beginning of year		—				—
NCI of acquired company		1,579				—
Net loss attributable to NCI		(68		)		—
Other comprehensive loss attributable to NCI		(77		)		—
Balance, end of period		1,434				—
TOTAL STOCKHOLDERS' EQUITY		$	1,163,755			$	1,023,860

See notes to consolidated financial statements.

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except share and per share data)

1. BASIS OF PRESENTATION

The accompanying unaudited consolidated financial statements have been prepared by IPG Photonics Corporation, or "IPG", "we", "our", "its" or the "Company". Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). The consolidated financial statements include the Company's accounts and those of its subsidiaries. All intercompany balances have been eliminated in consolidation. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto in the Company's Annual Report on Form 10-K for the year ended December 31, 2014.

In the opinion of the Company's management, the unaudited financial information for the interim periods presented reflects all adjustments necessary for a fair presentation of the Company's financial position, results of operations and cash flows. The results reported in these consolidated financial statements are not necessarily indicative of results that may be expected for the entire year.

The Company has evaluated subsequent events through the time of filing this Quarterly Report on Form 10-Q with the SEC.

2. RECENT ACCOUNTING PRONOUNCEMENTS

Accounting standards that have been issued or proposed by the FASB or other standards-setting bodies that do not require

adoption until a future date are not expected to have a material impact on the Company's financial statements upon adoption.

3. INVENTORIES

Inventories consist of the following:



	June 30,		December 31,
	2015		2014
Components and raw materials	$	66,618	$	54,925
Work-in-process	46,387		58,603
Finished goods	77,843		57,481
Total	$	190,848	$	171,009

The Company recorded inventory provisions totaling $3,685 and $3,432 for the three months ended June 30, 2015 and 2014, respectively, and $7,011 and $5,812 for the six months ended June 30, 2015 and 2014, respectively. These provisions relate to the recoverability of the value of inventories due to technological changes and excess quantities. These provisions are reported as a reduction to components and raw materials and finished goods.

4. ACCRUED EXPENSES AND OTHER LIABLILITES

Accrued expenses and other liabilities consist of the following:



	June 30,		December 31,
	2015		2014
Accrued compensation	$	26,872	$	31,673
Customer deposits and deferred revenue	22,435		16,605
Current portion of accrued warranty	12,061		9,489
Other	6,906		6,290
Total	$	68,274	$	64,057

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(In thousands, except share and per share data)

5. FINANCING ARRANGEMENTS

The Company's borrowings under existing financing arrangements consist of the following:



	June 30,			December 31,
	2015			2014
Revolving line-of-credit facilities:
European overdraft facilities	$	338		$	828
Euro line of credit	1,262			1,803
Total	$	1,600		$	2,631
Term debt:
U.S. long-term note	$	—		$	11,333
Collateralized long-term note	20,667			21,667
Less: current portion	(2,000		)	(13,333		)
Total long-term debt	$	18,667		$	19,667

The U.S. and Euro lines of credit are available to certain foreign subsidiaries and allow for borrowings in the local currencies of those subsidiaries. At June 30, 2015 and December 31, 2014, there were no amounts drawn on the U.S. line of credit, however there were $0 and $87, respectively, of guarantees issued against the line which reduces total availability. At June 30, 2015, there was $1,262 drawn on the Euro line of credit, and there were $8,275 and $4,309 of guarantees issued against the line as of June 30, 2015 and December 31, 2014, respectively, which reduces total availability. On April 30, 2015, the Company increased its U.S. line of credit with Bank of America to $50,000 and extended the maturity to April 2020.

The U.S. long-term note outstanding at December 31, 2014 matured and was paid in June 2015.

6. NET INCOME ATTRIBUTABLE TO IPG PHOTONICS CORPORATION PER SHARE

The following table sets forth the computation of diluted net income attributable to IPG Photonics Corporation per share:



	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Net income attributable to IPG Photonics Corporation	$	61,299	$	48,283	$	118,658	$	88,814
Weighted average shares	52,657		52,068		52,572		52,019
Dilutive effect of common stock equivalents	785		701		783		728
Diluted weighted average common shares	53,442		52,769		53,355		52,747
Basic net income attributable to IPG Photonics Corporation per share	$	1.16	$	0.93	$	2.26	$	1.71
Diluted net income attributable to IPG Photonics Corporation per share	$	1.15	$	0.92	$	2.22	$	1.68

The computation of diluted weighted average common shares excludes common stock equivalents of 9,500 shares and 57,000 shares, of which, includes restricted stock units ("RSUs") of 1,300 and 8,000 and performance stock units ("PSUs") of 4,400 and 0 for the three months ended June 30, 2015 and 2014, respectively. It also excludes 52,300 shares and 81,000 shares, of which, includes RSUs of 41,700 and 28,000 and PSUs of 4,400 and 0 for the six months ended June 30, 2015 and 2014, respectively, because the effect would be anti-dilutive.

7. DERIVATIVE FINANCIAL INSTRUMENTS

Derivative instruments – The Company's primary market exposures are to interest rates and foreign exchange rates. The Company uses certain derivative financial instruments to help manage these exposures. The Company executes these instruments with financial institutions it judges to be credit-worthy. The Company does not hold or issue derivative financial instruments for trading or speculative purposes.

The Company recognizes all derivative financial instruments as either assets or liabilities at fair value in the consolidated balance sheets. Until June 2015, the Company had an interest rate swap that was classified as a cash flow hedge of its matured variable rate debt. The Company has no derivatives that are not accounted for as a hedging instrument.

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(In thousands, except share and per share data)

Cash flow hedges – The Company previously had a cash flow hedge which was an interest rate swap associated with the U.S. long-term note. The interest rate swap agreement terminated with the note, which matured in June 2015. The fair value amounts in the consolidated balance sheet related to the interest rate swap were:



Notional Amounts¹				Other Assets				Other Current Liabilities²				Other Long-Term Liabilities²
June 30,		December 31,		June 30,		December 31,		June 30,		December 31,		June 30,		December 31,
2015		2014		2015		2014		2015		2014		2015		2014
$	—	$	11,333	$	—	$	—	$	—	$	151	$	—	$	—

(1) Notional amounts represent the gross contract/notional amount of the derivatives outstanding.

(2) As of December 31, 2014, the remaining balance of the U.S. long-term note outstanding was considered current because the note matured in June 2015.

The derivative gains and losses in the consolidated statements of income related to the Company's interest rate swap contracts were as follows:



	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Effective portion recognized in other comprehensive loss, pretax:
Interest rate swap	$	171		$	145		$	304		$	283
Effective portion reclassified from other comprehensive loss to interest expense, pretax:
Interest rate swap	$	(86	)	$	(76	)	$	(153	)	$	(151	)
Ineffective portion recognized in income:
Interest rate swap	$	—		$	—		$	—		$	—

8. FAIR VALUE MEASUREMENTS

The Company's financial instruments consist of cash equivalents, accounts receivable, accounts payable, drawings on revolving lines of credit, auction rate securities, long-term debt and certain derivative instruments.

The valuation techniques used to measure fair value are based upon observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect internal market assumptions. These two types of inputs create the following fair value hierarchy: Level 1, defined as observable inputs such as quoted prices for identical instruments in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs for which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The carrying amounts of cash equivalents, accounts receivable, accounts payable and drawings on revolving lines of credit are considered reasonable estimates of their fair market value, due to the short maturity of these instruments or as a result of the competitive market interest rates, which have been negotiated. If measured at fair value, accounts receivable and accounts payable would be classified as Level 3 and drawings on the revolving lines of credit would be classified as Level 2.

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(In thousands, except share and per share data)

The following table presents information about the Company's assets and liabilities measured at fair value:



			Fair Value Measurements at June 30, 2015
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	278,329	$	278,329	$	—	$	—
Auction rate securities	1,132		—		—		1,132
Total assets	$	279,461	$	278,329	$	—	$	1,132
Liabilities
Contingent purchase consideration	80		—		—		80
Total liabilities	$	80	$	—	$	—	$	80

			Fair Value Measurements at December 31, 2014
			Fair Value Measurements at December 31, 2014
	Total		Level 1		Level 2		Level 3
Assets
Cash equivalents	$	266,011	$	266,011	$	—	$	—
Auction rate securities	1,128		—		—		1,128
Total assets	$	267,139	$	266,011	$	—	$	1,128
Liabilities
Contingent purchase consideration	$	98	$	—	$	—	$	98
Interest rate swaps	151		—		151		—
Total liabilities	$	249	$	—	$	151	$	98

The fair value of the auction rate securities considered prices observed in inactive secondary markets for the securities held by the Company.

The fair value of accrued contingent consideration incurred was determined using an income approach at the acquisition date and reporting date. That approach is based on significant inputs that are not observable in the market. Key assumptions include assessing the probability of meeting certain milestones required to earn the contingent consideration.



	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Auction Rate Securities
Balance, beginning of period	$	1,130		$	1,122		$	1,128		$	1,120
Change in fair value and accretion	2			2			4			4
Balance, end of period	$	1,132		$	1,124		$	1,132		$	1,124
Contingent Purchase Consideration
Balance, beginning of period	$	83		$	366		$	98		$	375
Change in fair value and currency fluctuations	(3		)	(9		)	(18		)	(18		)
Balance, end of period	$	80		$	357		$	80		$	357

9. GOODWILL AND INTANGIBLES

The carrying amount of goodwill was $516 and $455 on June 30, 2015 and December 31, 2014, respectively.

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(In thousands, except share and per share data)

Intangible assets, subject to amortization, consisted of the following:



	June 30, 2015								December 31, 2014
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted- Average Lives	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted- Average Lives

Patents	$	6,641	$	(4,397	)	$	2,244	6 Years	$	6,641	$	(4,221	)	$	2,420	6 Years
Customer relationships	3,420		(3,169		)	251		5 Years	3,660		(3,308		)	352		5 Years
Production know-how	6,698		(2,957		)	3,741		8 Years	6,844		(2,630		)	4,214		8 Years
Technology, trademark and tradename	9,270		(1,493		)	7,777		8 Years	3,315		(1,074		)	2,241		8 Years
	$	26,029	$	(12,016	)	$	14,013		$	20,460	$	(11,233	)	$	9,227

During the first quarter of 2015, the Company purchased a 76% ownership interest in RukhTekh LLC ("RuchTech"). RuchTech's fair value at the time was $6,579. The Company paid $5,000, which represents the fair value of its ownership interest on March 15, 2015. In connection with this purchase, the Company has included $64 of Goodwill related to expected synergies for the Company's high-power systems product line and $6,298 of Purchased Technology intangibles.

The purchase price allocation included in the Company's financial statements are not complete and represent the

preliminary fair value estimates as of June 30, 2015 and are subject to subsequent adjustment as the Company obtains

additional information during the measurement period and finalizes its fair value estimates. Any subsequent adjustments to

these fair value estimates occurring during the measurement period will result in an adjustment to goodwill or income, as

applicable.

Amortization expense for the three months ended June 30, 2015 and 2014 was $608 and $534, respectively. Amortization expense for the six months ended June 30, 2015 and 2014 was $1,120 and $1,077, respectively. The estimated future amortization expense for intangibles for the remainder of 2015 and subsequent years is as follows:



2015	2016	2017	2018	2019	Thereafter	Total
$1,276	$2,525	$2,525	$2,460	$1,872	$3,355	$14,013

10. PRODUCT WARRANTIES

The Company typically provides one to three-year parts and service warranties on lasers and amplifiers. Most of the Company's sales offices provide support to customers in their respective geographic areas. Warranty reserves have generally been sufficient to cover product warranty repair and replacement costs. The following table summarizes product warranty activity recorded during the six months ended June 30, 2015 and 2014.



	2015			2014
Balance at January 1	$	19,272		$	14,997
Provision for warranty accrual	10,944			5,936
Warranty claims	(5,787		)	(4,226		)
Foreign currency translation	(1,107		)	(132		)
Balance at June 30	$	23,322		$	16,575

Accrued warranty reported in the accompanying consolidated financial statements as of June 30, 2015 and December 31, 2014 consisted of $12,061 and $9,489 in accrued expenses and other liabilities and $11,261 and $9,783 in other long-term liabilities, respectively.

11. INCOME TAXES

A reconciliation of the total amounts of unrecognized tax benefits is as follows:

Table of Contents

IPG PHOTONICS CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - (Continued)

(In thousands, except share and per share data)



	2015		2014
Balance at January 1	$	6,494	$	6,501
Reductions of prior period positions	—		—
Additions for tax positions in prior period	—		—
(Reductions) additions for tax positions in current period	—		—
Balance at June 30	$	6,494	$	6,501

Substantially all of the liability for uncertain tax benefits related to various federal, state and foreign income tax matters, would benefit the Company's effective tax rate, if recognized.

12. COMMITMENTS AND CONTINGENCIES

From time to time, the Company may be involved in disputes and legal proceedings in the ordinary course of its business.

These proceedings may include allegations of infringement of intellectual property, commercial disputes and employment

matters. As of June 30, 2015 and through the filing date of these Financial Statements, the Company has no legal proceedings ongoing that management estimates could have a material effect on the Company's Consolidated Financial Statements.

Table of Contents

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion in conjunction with our consolidated financial statements and related notes included elsewhere in this Quarterly Report on Form 10-Q. This discussion contains forward looking statements that are based on management's current expectations, estimates and projections about our business and operations. Our actual results may differ materially from those currently anticipated and expressed in such forward-looking statements. See "Cautionary Statement Regarding Forward-Looking Statements."

Overview

We are the leading developer and manufacturer of a broad line of high-performance fiber lasers, fiber amplifiers and diode lasers that are used for diverse applications, primarily in materials processing. We sell our products globally to original equipment manufacturers ("OEMs"), system integrators and end users. We market our products internationally primarily through our direct sales force.

We are vertically integrated such that we design and manufacture most of our key components used in our finished products, from semiconductor diodes to optical fiber preforms, finished fiber lasers and amplifiers. We also manufacture certain complementary products used with our lasers, including optical delivery cables, fiber couplers, beam switches, optical processing heads and chillers. In addition, we offer laser-based systems for certain markets and applications.

Factors and Trends That Affect Our Operations and Financial Results

In reading our financial statements, you should be aware of the following factors and trends that our management believes are important in understanding our financial performance.

Net sales. We derive net sales primarily from the sale of fiber lasers and amplifiers. We also sell diode lasers, communications systems, laser systems and complementary products. We sell our products through our direct sales organization and our network of distributors and sales representatives, as well as system integrators. We sell our products to OEMs that supply materials processing laser systems, communications systems and medical laser systems to end users. We also sell our products to end users that build their own systems which incorporate our products or use our products as an energy or light source. Our scientists and engineers work closely with OEMs, systems integrators and end users to analyze their system requirements and match appropriate fiber laser or amplifier specifications. Our sales cycle varies substantially, ranging from a period of a few weeks to as long as one year or more, but is typically several months.

Sales of our products generally are recognized upon shipment, provided that no obligations remain and collection of the receivable is reasonably assured. Our sales typically are made on a purchase order basis rather than through long-term purchase commitments.

We develop our products to standard specifications and use a common set of components within our product architectures. Our major products are based upon a common technology platform. We continually enhance these and other products by improving their components and developing new components and new product designs.

The average selling prices of our products generally decrease as the products mature. These decreases result from factors such as decreased manufacturing costs and increases in unit volumes, increased competition, the introduction of new products and market share considerations. In the past, we have lowered our selling prices in order to penetrate new markets and applications. Furthermore, we may negotiate discounted selling prices from time to time with certain customers that purchase multiple units.

Gross margin. Our total gross margin in any period can be significantly affected by total net sales in any period, by product mix, that is, the percentage of our revenue in the period that is attributable to higher or lower-power products and the mix of sales between laser and amplifier sources and complete systems, by sales mix between OEM customers who purchase devices from us in high unit volumes and other customers, by mix of sales in different geographies and by other factors, some of which are not under our control.

Our product mix affects our margins because the selling price per watt is generally higher for mid-power devices and certain specialty products than for high-power devices and certain pulsed lasers sold in large volumes. The overall cost of high-power lasers may be partially offset by improved absorption of fixed overhead costs associated with sales of larger volumes of higher-power products because they use a greater number of optical components and drive economies of scale in manufacturing. Also, the profit margins on systems can be lower than margins for our laser and amplifier sources, depending on the configuration, volume and competitive forces, among other factors.

Table of Contents

The mix of sales between OEM customers and other customers can affect gross margin because we provide sales price discounts on products based on the number of units ordered. As the number of OEM customers increases and the number of units ordered increases, the average sales price per unit will be reduced. We expect that the impact of reduced sales price per unit will be offset by the manufacturing efficiency provided by high unit volume orders, but the timing and extent of achieving these efficiencies may not always match the mix of sales in any given time period or be realized at all.

We also regularly review our inventory for items that are slow-moving, have been rendered obsolete or determined to be excess. Any write-off of such slow-moving, obsolete or excess inventory affects our gross margins. For example, we recorded provisions for inventory totaling $3.7 million and $3.4 million for the three months ended June 30, 2015 and 2014, respectively and $11.3 million, $15.1 million and $8.2 million for the years ended December 31, 2014, 2013 and 2012, respectively.

Sales and marketing expense. We expect to continue to expand our worldwide direct sales organization, build and expand applications centers, hire additional personnel involved in marketing in our existing and new geographic locations, increase the number of units for demonstration purposes and otherwise increase expenditures on sales and marketing activities in order to support the growth in our net sales. As such, we expect that our sales and marketing expenses will increase in the aggregate.

Research and development expense. We plan to continue to invest in research and development to improve our existing components and products and develop new components, products and systems. The amount of research and development expense we incur may vary from period to period. In general, if net sales continue to increase we expect research and development expense to increase in the aggregate.

General and administrative expense. We expect our general and administrative expenses to increase as we continue to invest in systems and resources in management, finance, legal, information technology, human resources and administration to support our worldwide operations. Legal expenses vary from quarter to quarter based primarily upon the level of litigation, transaction and compliance activities.

Foreign Exchange. Because we are a U.S. based company doing business globally, we have both translational and transactional exposure to fluctuations in foreign currency exchange rates. Changes in the relative exchange rate between the U.S. dollar and the foreign currencies in which our subsidiaries operate directly affects our sales, costs and earnings. Differences in the relative exchange rates between where we sell our products and where we incur manufacturing and other operating costs (primarily in the U.S., Germany and Russia) also affects our costs, and earnings. Certain currencies experiencing significant exchange rate fluctuations like the Euro, the Russian Ruble, the Japanese Yen and Chinese Yuan have had and could have an additional significant impact on our sales, costs and earnings. Our ability to adjust the foreign currency selling prices of products in response to changes in exchange rates is limited and may not offset the impact of the changes in exchange rates on the translated value of sales or costs. In addition, if we increase the selling price of our products in local currencies this could have a negative impact the demand for our products.

Major customers. While we have historically depended on a few customers for a large percentage of our annual net sales, the composition of this group can change from year to year. Net sales derived from our five largest customers as a percentage of our net sales was 24% for the six months ended June 30, 2015 and 23%, 21% and 16% for the full years 2014, 2013 and 2012, respectively. Our largest customer accounted for 11% of our net sales for the six months ended June 30, 2015. We seek to add new customers and to expand our relationships with existing customers. We anticipate that the composition of our significant customers will continue to change. If any of our significant customers substantially reduced their purchases from us, our results would be adversely affected.

Results of Operations for the three months ended June 30, 2015 compared to the three months ended June 30, 2014

Net sales. Net sales increased by $42.9 million, or 22.3%, to $235.1 million for the three months ended June 30, 2015 from $192.2 million for the three months ended June 30, 2014.



	Three Months Ended June 30,
	2015				2014				Change
			% of Total				% of Total
Materials processing	$	224,486	95.5	%	$	185,271	96.4	%	$	39,215	21.2	%
Other applications	10,652		4.5	%	6,933		3.6	%	3,719		53.6	%
Total	$	235,138	100.0	%	$	192,204	100.0	%	$	42,934	22.3	%

Table of Contents



	Three Months Ended June 30,
	2015				2014				Change
			% of Total				% of Total
High-Power Continuous Wave ("CW") Lasers	$	131,825	56.1	%	$	104,146	54.2	%	$	27,679		26.6	%
Medium-Power CW Lasers	26,575		11.3	%	21,600		11.2	%	4,975			23.0	%
Low-Power CW Lasers	3,746		1.6	%	3,100		1.6	%	646			20.8	%
Pulsed Lasers	32,131		13.7	%	32,400		16.9	%	(269		)	(0.8	)%
Quasi-Continuous Wave ("QCW") Lasers	15,712		6.7	%	8,075		4.2	%	7,637			94.6	%
Other Revenue including Amplifiers, Laser Systems, Service, Parts, Accessories and Change in Deferred Revenue	25,149		10.7	%	22,883		11.9	%	2,266			9.9	%
Total	$	235,138	100.0	%	$	192,204	100.0	%	$	42,934		22.3	%

Sales for materials processing applications increased primarily due to higher sales of high-power, medium-power, QCW lasers, and amplifiers and diodes included in other revenue. High-power laser sales increased due to increased demand for cutting, welding and brazing applications. Medium-power laser sales increased due to increased demand for laser sintering/3D manufacturing and thin material welding applications. Low-power laser sales increased due to the strong growth in medical applications. QCW laser sales increased primarily due to welding and cutting applications. Other revenue increased mainly as a result of higher telecom and diode sales during the period partially offset by lower service, parts and accessories sales. We continue to see increased acceptance of the advantages of fiber laser technology. A growing number of OEM customers have developed cutting systems that use our high-power lasers and sales of these systems are gaining sales from gas laser systems. Medium-power lasers are increasingly being used for fine material processing such as cutting and welding metals in the consumer electronics industry as well as in 3D printing. We also increased sales of QCW lasers used for cutting and welding thin sheet metal as demand increased for these devices from OEM customers because they are displacing lamp pumped YAG lasers.

Cost of sales and gross margin. Cost of sales increased by $18.5 million, or 21.0%, to $106.4 million for the three months ended June 30, 2015 from $88.0 million for the three months ended June 30, 2014. Our gross margin increased to 54.7% for the three months ended June 30, 2015 from 54.2% for the three months ended June 30, 2014. Gross margin increased due to product mix including increased high-power, medium-power and QCW sales partially offset by increased unit sales of low-power, low-cost pulsed lasers, a decrease in component cost greater than the decrease in average selling prices and improved leverage of our manufacturing costs partially offset by increased provisions for excess and obsolete inventory and provisions for warranty reserves.

Sales and marketing expense. Sales and marketing expense remained flat at $8.0 million for the three months ended June 30, 2015 and 2014. As a percentage of sales, sales and marketing expense decreased to 3.4% for the three months ended June 30, 2015 from 4.2% for the three months ended June 30, 2014.

Research and development expense. Research and development expense increased by $1.8 million, or 13.1%, to $15.1 million for the three months ended June 30, 2015, compared to $13.4 million for the three months ended June 30, 2014, primarily as a result of an increase in personnel, stock-based compensation, premises, depreciation, travel, consultant costs and materials used for research and development. These increases were partially offset by decreased expenses related to outside research and development contracts. Research and development continues to focus on developing new products at different wavelengths including UV, green and mid-infrared lasers as well as developing end user systems, new pulsed laser products including high power pulsed products and ultra-fast pulsed products, improving the electrical efficiency of high power products, enhancing the performance of our internally manufactured components, refining production processes to improve manufacturing yields, developing new accessories and achieving higher output powers. As a percentage of sales, research and development expense decreased to 6.4% for the three months ended June 30, 2015 from 7.0% for the three months ended June 30, 2014.

General and administrative expense. General and administrative expense increased by $1.9 million, or 14.4%, to $15.0 million for the three months ended June 30, 2015 from $13.1 million for the three months ended June 30, 2014. This was primarily as a result of increased personnel, stock-based compensation, consulting, accounting and legal costs and bad debt provisions. As a percentage of sales, general and administrative expense decreased to 6.4% for the three months ended June 30, 2015 from 6.8% for the three months ended June 30, 2014.

Table of Contents

respectively, we would have expected net sales to be $19.7 million higher, gross profit to be $9.9 million higher and total operating expenses would have been $4.0 million higher.

Loss (gain) on foreign exchange. We incurred a foreign exchange loss of $3.2 million for the three months ended June 30, 2015 as compared to $0.9 million loss for the three months ended June 30, 2014. The change is primarily attributable to the appreciation of the U.S. Dollar compared to the Euro.

Interest expense, net. Interest expense, net remained relatively flat for the three months ended June 30, 2015 and 2014.

Other income, net. Other income, remained relatively flat for the three months ended June 30, 2015 and 2014.

Provision for income taxes. Provision for income taxes was $26.2 million for the three months ended June 30, 2015 compared to $20.7 million for the three months ended June 30, 2014. The effective tax rates were 30.0% and 30.0% for the three months ended June 30, 2015 and 2014, respectively.

Net income attributable to IPG Photonics Corporation. Net income attributable to IPG Photonics Corporation increased by $13.0 million to $61.3 million for the three months ended June 30, 2015 compared to $48.3 million for the three months ended June 30, 2014. Net income attributable to IPG Photonics Corporation as a percentage of our net sales increased by 1.0 percentage points to 26.1% for the three months ended June 30, 2015 from 25.1% for the three months ended June 30, 2014 due to the factors described above.

Results of Operations for the six months ended June 30, 2015 compared to the six months ended June 30, 2014

Net sales. Net sales increased by $71.3 million, or 19.7%, to $434.1 million for the six months ended June 30, 2015 from $362.8 million for the six months ended June 30, 2014.



	Six Months Ended June 30,
	2015				2014				Change
			% of Total				% of Total
Materials processing	$	416,489	95.9	%	$	347,996	95.9	%	$	68,493	19.7	%
Other applications	17,609		4.1	%	14,783		4.1	%	2,826		19.1	%
Total	$	434,098	100.0	%	$	362,779	100.0	%	$	71,319	19.7	%



	Six Months Ended June 30,
	2015				2014				Change
			% of Total				% of Total
High-Power CW Lasers	$	246,142	56.7	%	$	204,137	56.3	%	$	42,005	20.6	%
Medium-Power CW Lasers	48,516		11.2	%	39,082		10.8	%	9,434		24.1	%
Low-Power CW Lasers	7,230		1.7	%	6,885		1.9	%	345		5.0	%
Pulsed Lasers	61,981		14.3	%	61,242		16.9	%	739		1.2	%
QCW Lasers	25,742		5.9	%	13,683		3.8	%	12,059		88.1	%
Other Revenue including Amplifiers, Laser Systems, Service, Parts, Accessories and Change in Deferred Revenue	44,487		10.2	%	37,750		10.4	%	6,737		17.8	%
Total	$	434,098	100.0	%	$	362,779	100.0	%	$	71,319	19.7	%

Sales for materials processing applications increased primarily due to higher sales of high-power, medium-power, QCW lasers, and amplifiers and diodes included in other revenue. High-power laser sales increased due to increased demand for cutting, welding and surface structuring applications. Medium-power laser sales increased due to increased demand for laser sintering/3D manufacturing and thin material welding applications. Low-power laser sales increased due to growth in medical applications. QCW laser sales increased primarily due to cutting and welding applications. Other revenue increased mainly as a result of higher telecom and diode sales during the period partially offset by lower service, parts and accessories sales. We continue to see increased acceptance of the advantages of fiber laser technology. A growing number of OEM customers have developed cutting systems that use our high-power lasers and sales of these systems are gaining sales from gas laser systems. Medium-power lasers are increasingly being used for fine material processing such as cutting and welding metals in the consumer electronics industry as well as in 3D printing. We also increased sales of QCW lasers used for cutting and welding

Table of Contents

thin sheet metal as demand increased for these devices from OEM customers because they are displacing lamp pumped YAG lasers.

Cost of sales and gross margin. Cost of sales increased by $28.3 million, or 16.7%, to $197.6 million for the six months ended June 30, 2015 from $169.3 million for the six months ended June 30, 2014. Our gross margin increased to 54.5% from 53.3% for the six months ended June 30, 2015 and 2014, respectively. Gross margin increased due to product mix including increased high-power, medium-power and QCW sales partially offset by increased unit sales of low-power, low-cost pulsed lasers, the benefit of lower manufacturing costs due to the depreciation of the Euro and Russian Ruble exchange rates, a decrease in component cost greater than the decrease in average selling prices and increased absorption of our manufacturing overhead partially offset by increased provisions for excess and obsolete inventory and provisions for warranty reserves.

Sales and marketing expense. Sales and marketing expense increased by $0.3 million, or 2.0%, to $15.5 million for the six months ended June 30, 2015 from $15.2 million for the six months ended June 30, 2014, primarily as a result of increases in stock-based compensation, travel, consultants, marketing costs and depreciation. As a percentage of sales, sales and marketing expense decreased to 3.6% for the six months ended June 30, 2015 from 4.2% for the six months ended June 30, 2014.

Research and development expense. Research and development expense increased by $3.2 million, or 12.2%, to $29.3 million for the six months ended June 30, 2015, compared to $26.1 million for the six months ended June 30, 2014, primarily as a result of an increase in personnel, stock-based compensation, premises, depreciation, consultant, travel costs and materials used for research and development. These increases were partially offset by decreased expenses related to outside research and development contracts. Research and development continues to focus on developing new products at different wavelengths including UV, green and mid-infrared lasers as well as developing end user systems, new pulsed laser products including high power pulsed products and ultra-fast pulsed products, improving the electrical efficiency of high power products, enhancing the performance of our internally manufactured components, refining production processes to improve manufacturing yields, developing new accessories and achieving higher output powers. As a percentage of sales, research and development expense decreased to 6.8% for the six months ended June 30, 2015 from 7.2% for the six months ended June 30, 2014.

General and administrative expense. General and administrative expense increased by $1.8 million, or 6.7%, to $27.8 million for the six months ended June 30, 2015 from $26.0 million for the six months ended June 30, 2014, primarily as a result of increased personnel, stock-based compensation, depreciation costs and bad debt provisions. As a percentage of sales, general and administrative expense decreased to 6.4% for the six months ended June 30, 2015 from 7.2% for the six months ended June 30, 2014.

Effect of exchange rates on net sales, gross profit and operating expenses. We estimate that, if exchange rates relative to the U.S. Dollar had been the same as one year ago, which were on average Euro 0.73, Russian Ruble 35 and Japanese Yen 103, respectively, we would have expected net sales for the six months ended June 30, 2015 to be $41.3 million higher, gross profit to be $20.7 million higher and total operating expenses would have been $8.2 million higher.

Loss (gain) on foreign exchange. We incurred a foreign exchange gain of $5.6 million for the six months ended June 30, 2015 as compared to a $0.4 million gain for the six months ended June 30, 2014. The change is primarily attributable to the changes of the U.S. Dollar against the Euro, Russian Ruble and Chinese Yuan.

Interest expense, net. Interest expense, increased to $0.3 million for the six months ended June 30, 2015 from $0.1 million for the six months ended June 30, 2014.

Other income, net. Other income, net decreased to $0.2 million of income for the six months ended June 30, 2015 compared to approximately $0.6 million of income for the six months ended June 30, 2014.

Provision for income taxes. Provision for income taxes was $50.8 million for the six months ended June 30, 2015 compared to $38.2 million for the six months ended June 30, 2014, representing an effective tax rate of 30.0% and 30.1% for the six months ended June 30, 2015 and 2014, respectively. The decrease in effective rate was due primarily to the mix of income earned in various tax jurisdictions. The legislation enabling research and development credits expired for 2014 and new legislation has not been enacted. Accordingly, there is no benefit for research and development tax credits recognized for the six months ended June 30, 2015.

Net income attributable to IPG Photonics Corporation. Net income attributable to IPG Photonics Corporation increased by $29.8 million to $118.7 million, or 33.6% for the six months ended June 30, 2015 compared to $88.8 million for the six months ended June 30, 2014. Net income attributable to IPG Photonics Corporation as a percentage of our net sales increased by 2.8 percentage points to 27.3% for the six months ended June 30, 2015 from 24.5% for the six months ended June 30, 2014 due to the factors described above.

Table of Contents

Liquidity and Capital Resources

Our principal sources of liquidity as of June 30, 2015 consisted of cash and cash equivalents of $571.5 million, unused credit lines and overdraft facilities of $75.6 million and other working capital (excluding cash and cash equivalents) of $305.1 million. This compares to cash and cash equivalents of $522.2 million, unused credit lines and overdraft facilities of $66.9 million and other working capital (excluding cash and cash equivalents) of $249.6 million as of December 31, 2014. The increase in cash and cash equivalents of $49.4 million from December 31, 2014 relates primarily to the following:


•	Cash provided by operating activities in the six months ended June 30, 2015 of $101.4 million.


•	Cash used in investing activities of $37.3 million which mostly relate to capital expenditures and the purchase of a majority interest of a company in the first quarter.


•	Cash provided by financing activities of $2.1 million from the exercise of stock options, sales of shares under our employee stock purchase plan and their related tax benefits partially offset by the payments on long-term borrowings and net payments of line-of-credit facilities.

Our long-term debt consists of a $20.7 million secured note. The note is secured by our corporate aircraft. Of this amount, $2.0 million is the current portion. The interest rate is fixed at 2.81% per annum and the note matures in October 2019, at which time the outstanding debt balance would be $12.0 million.

We believe that our existing cash and marketable securities, our cash flows from operations and our existing lines of credit provides us with the financial flexibility to meet our liquidity and capital needs, as well as to complete certain acquisitions of complementary businesses and technologies. Our future long-term capital requirements will depend on many factors including our level of sales, the impact of economic environment on our sales levels, the timing and extent of spending to support development efforts, the expansion of the global sales and marketing activities, the timing and introductions of new products, the need to ensure access to adequate manufacturing capacity and the continuing market acceptance of our products.

The following table details our line-of-credit facilities as of June 30, 2015:




Description	Available Principal	Interest Rate	Maturity	Security
U.S. Revolving Line of Credit (1)	Up to $50.0 million	LIBOR plus 0.80% to 1.20%, depending on our performance	April 2020	Unsecured
Euro Credit Facilities (Germany) (2)	Euro 30.0 million ($33.3 million)	Euribor plus 1.00% or EONIA 1.25%	July 2017	Unsecured, guaranteed by parent company and Germany subsidiary
Euro Overdraft Facilities (3)	Euro 2.0 million ($2.2 million)	1.0%-6.5%	October 2015	Common pool of assets of Italian subsidiary


(1)	Effective April 30, 2015, this amount was amended from $35 million to $50 million and this revolving credit facility is available to our foreign subsidiaries in their respective local currencies. At June 30, 2015, there were no drawings or guarantees issued against the line.

(2)

$17.8 million is available to our Russian subsidiary, $8.9 million is available to our German subsidiary, $3.3 million of this credit facility is available to our Chinese subsidiary and $3.3 million is available to our Italian subsidiary. At June 30, 2015, there was $1.3 million drawn upon with an interest rate of 1.0% and there were $8.3 million of guarantees issued against the line which reduces the total availability.


(3)	At June 30, 2015, $0.3 million of the $2.2 million was drawn upon with an interest rate of 1.0%.

Our largest committed credit lines are with Bank of America and Deutsche Bank in the amounts of $50.0 million and $33.3 million, respectively, and neither of them is syndicated.

We are required to meet certain financial covenants associated with our U.S. revolving line of credit and long-term debt facility. These covenants, tested quarterly, include a debt service coverage ratio and a funded debt to earnings before interest, taxes, depreciation and amortization ("EBITDA") ratio. The debt service coverage covenant requires that we maintain a trailing twelve month ratio of cash flow to debt service that is at least 1.5:1. Debt service is defined as required principal and interest payments during the period. Debt service in the calculation is decreased by our cash held in the U.S.A. in excess of $50 million up to a maximum of $250 million. Cash flow is defined as EBITDA less unfunded capital expenditures. The funded debt to EBITDA covenant requires that the sum of all indebtedness for borrowed money on a consolidated basis be less than three

Table of Contents

times our trailing twelve months EBITDA. We were in compliance with all such financial covenants as of and for the three months ended June 30, 2015.

Operating activities. Net cash provided by operating activities increased by $24.5 million to $101.4 million for the six months ended June 30, 2015 from $76.9 million for the six months ended June 30, 2014, primarily resulting from:


•	An increase in cash provided by net income after adding back non-cash charges of $42.5 million to $161.0 million in the six months ended June 30, 2015 as compared to $118.5 million in the same period in 2014;


•	An increase in income and other taxes payable of $7.1 million in the six months ended June 30, 2015 as compared to a decrease of $1.1 million in the same period in 2014;


•	An increase in prepaid expenses and other current assets of $1.9 million in the six months ended June 30, 2015 as compared to an increase of $0.4 million in the same period in 2014;


•	An increase in accounts payable of $4.4 million in the six months ended June 30, 2015 as compared to an decrease of $2.7 million in the same period in 2014; partially offset by


•	An increase in inventory of $33.2 million in the six months ended June 30, 2015 as compared to an increase of $15.0 million in the same period in 2014;


•	An increase in accounts receivable of $31.7 million in the six months ended June 30, 2015 as compared to an increase of $20.7 million in the same period in 2014;


•	A decrease in accrued expenses and other liabilities of $2.4 million in the six months ended June 30, 2015 as compared to a decrease of $0.2 million in the same period in 2014;


•	An increase in the tax benefit from exercise of employee stock options of $5.7 million in the six months ended June 30, 2015 as compared to an increase of $2.4 million in the same period in 2014 and


•	The effect of exchange rates on cash related to the appreciation of the U.S. Dollar compared to the Euro and Russian Ruble of $16.8 million.

Given our vertical integration, rigorous and time-consuming testing procedures for both internally manufactured and externally purchased components and the lead time required to manufacture components used in our finished products, the rate at which we turn inventory has historically been comparatively low when compared to our cost of sales. Also, our historic growth rates required investment in inventories to support future sales and enable us to quote short delivery times to our customers, providing what we believe is a competitive advantage. Furthermore, if there was a disruption to the manufacturing capacity of any of our key technologies, our inventories of components should enable us to continue to build finished products for a reasonable period of time. We believe that we will continue to maintain a relatively high level of inventory compared to our cost of sales. As a result, we expect to have a significant amount of working capital invested in inventory. A reduction in our level of net sales or the rate of growth of our net sales from their current levels would mean that the rate at which we are able to convert our inventory into cash would decrease.

Investing activities. Net cash used in investing activities was $37.3 million and $45.5 million in the six months ended June 30, 2015 and 2014, respectively. The cash used in investing activities in 2015 related to the construction of new buildings in the U.S.A., Germany and Russia, purchases of machinery and equipment and the purchase of a majority interest in a company in the first quarter. The cash used in investing activities in 2014 related to the construction and purchase of new buildings in the United States, Germany and Russia as well as purchases of machinery and equipment.

We expect to incur between $60 million and $65 million in capital expenditures, excluding acquisitions in 2015, as we continue to upgrade facilities and add capacity worldwide to support our anticipated revenue growth. The timing and extent of any capital expenditures in and between periods can have a significant effect on our cash flow. Many of the capital expenditure projects that we undertake have long lead times and are difficult to cancel or defer to a later period.

Financing activities. Net cash provided by financing activities was $2.1 million and $4.6 million in the six months ended June 30, 2015 and 2014, respectively. The cash provided by financing activities in 2015 was primarily related the cash provided by the exercise of stock options, sales of shares under our employee stock purchase plan and the related tax benefits of the exercises partially offset by the payments on our long-term borrowings of which $10.7 million related to the final payment on the U.S. long-term note that matured in June and net payments of line-of-credit facilities. The cash provided by financing activities in 2014 was primarily related to the cash provided by the exercise of stock options, sales of shares under our employee stock purchase plan and the related tax benefits of the exercises partially offset by the payments on our long-term borrowings and net payments of line-of-credit facilities.

Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, and we intend that such forward-looking statements be subject to the safe harbors created thereby. For this purpose, any statements contained in this Quarterly Report on

Table of Contents

Form 10-Q except for historical information are forward-looking statements. Without limiting the generality of the foregoing, words such as "may," "will," "expect," "believe," "anticipate," "intend," "could," "estimate," or "continue" or the negative or other variations thereof or comparable terminology are intended to identify forward-looking statements. In addition, any statements that refer to projections of our future financial performance, trends in our businesses, or other characterizations of future events or circumstances are forward-looking statements.

The forward-looking statements included herein are based on current expectations of our management based on available information and involve a number of risks and uncertainties, all of which are difficult or impossible to accurately predict and many of which are beyond our control. As such, our actual results may differ significantly from those expressed in any forward-looking statements. Factors that may cause or contribute to such differences include, but are not limited to, those discussed in more detail in Item 1, "Business" and Item 1A, "Risk Factors" of Part I of our Annual Report on Form 10-K for the year ended December 31, 2014. Readers should carefully review these risks, as well as the additional risks described in other documents we file from time to time with the Securities and Exchange Commission. In light of the significant risks and uncertainties inherent in the forward-looking information included herein, the inclusion of such information should not be regarded as a representation by us or any other person that such results will be achieved, and readers are cautioned not to rely on such forward-looking information. We undertake no obligation to revise the forward-looking statements contained herein to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.

Recent Accounting Pronouncements

Accounting standards that have been issued or proposed by the FASB or other standards-setting bodies that do not require

adoption until a future date are not expected to have a material impact on our financial statements upon adoption.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We are exposed to market risk in the ordinary course of business, which consists primarily of interest rate risk associated with our cash and cash equivalents and our debt and foreign exchange rate risk.

Interest rate risk. Our investments have limited exposure to market risk. To minimize this risk, we maintain a portfolio of cash, cash equivalents and short-term investments, consisting primarily of bank deposits, money market funds and short-term government securities. The interest rates are variable and fluctuate with current market conditions. Because of the short-term nature of these instruments, a sudden change in market interest rates would not be expected to have a material impact on our financial condition or results of operations.

We are also exposed to market risk as a result of increases or decreases in the amount of interest expense we must pay on our bank debt and borrowings on our bank credit facilities. Our interest obligations on our long-term debt are fixed by means of an interest rate swap agreement. Although our U.S. revolving line of credit and our Euro credit facility have variable rates, we do not believe that a 10% change in market interest rates would have a material impact on our financial position or results of operations.

Exchange rates. Due to our international operations, a significant portion of our net sales, cost of sales and operating expenses are denominated in currencies other than the U.S. Dollar, principally the Euro, the Russian Ruble, the Japanese Yen and Chinese Yuan. As a result, our international operations give rise to transactional market risk associated with exchange rate movements of the U.S. Dollar, the Euro, the Russian Ruble, the Japanese Yen and Chinese Yuan. Loss on foreign exchange transactions totaled $3.2 million and $0.9 million for the three months ended June 30, 2015 and 2014, respectively. Gain on foreign exchange transactions totaled $5.6 million and $0.4 million for the six months ended June 30, 2015 and 2014, respectively. Management attempts to minimize these exposures by partially or fully off-setting foreign currency denominated assets and liabilities at our subsidiaries that operate in different functional currencies. The effectiveness of this strategy can be limited by the volume of underlying transactions at various subsidiaries and by our ability to accelerate or delay inter-company cash settlements. As a result, we are unable to create a perfect offset of the foreign currency denominated assets and liabilities. Furthermore, if the forecast or trend for a certain currency is expected, in the medium or long term, to be in a certain direction we have, on occasions, chosen not to try to off-set the assets or liabilities. At June 30, 2015, our material foreign currency exposure is net U.S. Dollar denominated assets at subsidiaries where the Euro is the functional currency. The net U.S. Dollar denominated assets are comprised of cash, third party receivables, inter-company receivables and inter-company notes offset by third party and inter-company U.S. Dollar denominated payables. A 5% change in the relative exchange rate of the U.S. Dollar to the Euro as of June 30, 2015 applied to the net U.S. Dollar asset balances, would result in a foreign exchange gain of $3.7 million if the U.S. Dollar appreciated and a $3.7 million foreign exchange loss if the U.S. Dollar depreciated.

Foreign currency derivative instruments can also be used to hedge exposures and reduce the risks of certain foreign currency transactions; however, these instruments provide only limited protection and can carry significant cost. We have no foreign currency derivative instrument hedges as of June 30, 2015. We will continue to analyze our exposure to currency

Table of Contents

exchange rate fluctuations and may engage in financial hedging techniques in the future to attempt to minimize the effect of these potential fluctuations. Exchange rate fluctuations may adversely affect our financial results in the future.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Under the supervision of our chief executive officer and our chief financial officer, our management has evaluated the effectiveness of the design and operation of our "disclosure controls and procedures" (as defined in Rules 13a-15(e) and 15d-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the "Exchange Act")), as of the end of the period covered by this Quarterly Report on Form 10-Q (the "Evaluation Date"). Based upon that evaluation, our chief executive officer and our chief financial officer have concluded that, as of the Evaluation Date, our disclosure controls and procedures are effective.

Changes in Internal Controls

There was no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) promulgated under the Exchange Act) that occurred during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Table of Contents

PART II—OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

From time to time, we are party to various legal proceedings and other disputes incidental to our business. There have been no material developments to those proceedings reported in our Annual Report on Form 10-K for the year ended December 31, 2014.

ITEM 1A. RISK FACTORS

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, "Item 1A. Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2014, which could materially affect our business, financial condition or future results. The risks described in our Annual Report on Form 10-K and Quarterly Reports on Form 10-Q are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities



Date	Total Number of Shares (or Units) Purchased			Average Price Paid per Share (or Unit)		Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs		Maximum Number (or Approximate Dollar Value) of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs
January 1, 2015 — January 31, 2015	—	(1	)	$	—	$	—	$	—
February 1, 2015 — February 28, 2015	—	(1	)	—		—		—
March 1, 2015 — March 31, 2015	2,945	(1	)	93.29		—		—
April 1, 2015 — April 30, 2015	—	(1	)	—		—		—
May 1, 2015 — May 31, 2015	—	(1	)	—		—		—
June 1, 2015 — June 30, 2015	2,823	(1	)	86.53		—		—
Total	5,768			$	89.98	$	—	$	—

(1)

In 2012, our Board of Directors approved "withhold to cover" as a tax payment method for vesting of restricted stock awards for certain employees. Pursuant to the "withhold to cover" method, we withheld from such employees the shares noted in the table above to cover tax withholding related to the vesting of their awards. The average prices listed in the above table are averages of the fair market prices at which we valued shares withheld for purposes of calculating the number of shares to be withheld in 2015.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. OTHER INFORMATION

None.

ITEM 6. EXHIBITS

(a) Exhibits

Table of Contents



Exhibit No.		Description
31.1		Certification of Chief Executive Officer pursuant to Rule 13a-14(a)
31.2		Certification of Chief Financial Officer pursuant to Rule 13a-14(a)
32		Certification of Chief Executive Officer and Chief Financial Officer pursuant to Section 1350
101.INS		XBRL Instance Document
101.SCH		XBRL Taxonomy Extension Schema
101.CAL		XBRL Taxonomy Extension Calculation Linkbase
101.LAB		XBRL Taxonomy Extension Label Linkbase
101.PRE		XBRL Taxonomy Extension Presentation Linkbase
101.DEF		XBRL Taxonomy Extension Definition Linkbase

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to be signed on its behalf by the undersigned thereunto duly authorized.



	IPG PHOTONICS CORPORATION

Date: August 3, 2015	By:	/s/ Valentin P. Gapontsev
		Valentin P. Gapontsev
		Chairman and Chief Executive Officer (Principal Executive Officer)

Date: August 3, 2015	By:	/s/ Timothy P.V. Mammen
		Timothy P.V. Mammen Senior Vice President and Chief Financial Officer (Principal Financial Officer)

Goodwill And Intangibles (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Carrying amount of goodwill	$ 516			$ 516		$ 455
Amortization expense	$ 608		$ 534	$ 1,120	$ 1,077
RukhTekh LLC
Finite-Lived Intangible Assets [Line Items]
Carrying amount of goodwill		$ 64
Ownership interest purchased (percentage)		76.00%
Fair value of RukhTekh		$ 6,579
Amount paid to purchase ownership interest		5,000
RukhTekh LLC \| Purchased Technology intangibles
Finite-Lived Intangible Assets [Line Items]
Amount of Purchased Technology intangibles		$ 6,298

Recent Accounting Pronouncements	6 Months Ended
Recent Accounting Pronouncements	Jun. 30, 2015
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS Accounting standards that have been issued or proposed by the FASB or other standards-setting bodies that do not require adoption until a future date are not expected to have a material impact on the Company's financial statements upon adoption.

Financing Arrangements (Borrowings Under Existing Financing Arrangements) (Details) - USD ($)	Jun. 30, 2015	Apr. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Revolving line-of-credit facilities	$ 1,600,000		$ 2,631,000
Less: current portion	(2,000,000)		(13,333,000)
Total long-term debt	18,667,000		19,667,000
Bank of America \| Line of Credit
Debt Instrument [Line Items]
Line of credit with Bank of America		$ 50,000,000
European overdraft facilities
Debt Instrument [Line Items]
Revolving line-of-credit facilities	338,000		828,000
Euro line of credit
Debt Instrument [Line Items]
Revolving line-of-credit facilities	1,262,000		1,803,000
Guarantees issued	8,275,000		4,309,000
Amount drawn on line of credit	1,262,000
U.S. long-term note
Debt Instrument [Line Items]
Term debt	0		11,333,000
Guarantees issued	0		87,000
Collateralized long-term note
Debt Instrument [Line Items]
Term debt	$ 20,667,000		$ 21,667,000

Basis Of Presentation	6 Months Ended
Basis Of Presentation	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements have been prepared by IPG Photonics Corporation, or "IPG", "we", "our", "its" or the "Company". Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC"). The consolidated financial statements include the Company's accounts and those of its subsidiaries. All intercompany balances have been eliminated in consolidation. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto in the Company's Annual Report on Form 10-K for the year ended December 31, 2014. In the opinion of the Company's management, the unaudited financial information for the interim periods presented reflects all adjustments necessary for a fair presentation of the Company's financial position, results of operations and cash flows. The results reported in these consolidated financial statements are not necessarily indicative of results that may be expected for the entire year. The Company has evaluated subsequent events through the time of filing this Quarterly Report on Form 10-Q with the SEC.

Product Warranties (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Product Warranties [Line Items]
Accrued warranty reported in accrued expenses and other liabilities	$ 12,061	$ 9,489
Accrued warranty reported in other long-term liabilities	$ 11,261	$ 9,783
Minimum
Product Warranties [Line Items]
Service warranties on lasers and amplifiers	1 year
Maximum
Product Warranties [Line Items]
Service warranties on lasers and amplifiers	3 years



1.	I have reviewed this quarterly report on Form 10-Q of IPG Photonics Corporation;



2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;



3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;



4.	The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:


(a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;


(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;


(c)	Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and


(d)	Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and


(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and


(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.



By:		/s/ Valentin P. Gapontsev
		Valentin P. Gapontsev
		Chairman and Chief Executive Officer (Principal Executive Officer)



By:		/s/ Timothy P.V. Mammen
		Timothy P.V. Mammen
		Vice President and Chief Financial Officer (Principal Financial Officer)



1	the Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and



2	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Goodwill And Intangibles (Estimated Future Amortization Expense For Intangibles) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$ 1,276
2016	2,525
2017	2,525
2018	2,460
2019	1,872
Thereafter	3,355
Net Carrying Amount	$ 14,013	$ 9,227

Income Taxes (Details) - USD ($) $ in Thousands	6 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1	$ 6,494	$ 6,501
Reductions of prior period positions	0	0
Additions for tax positions in prior period	0	0
(Reductions) additions for tax positions in current period	0	0
Balance at June 30	$ 6,494	$ 6,501

Accrued Expenses And Other Liabilities (Components Of Accrued Expenses And Other Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued compensation	$ 26,872	$ 31,673
Customer deposits and deferred revenue	22,435	16,605
Current portion of accrued warranty	12,061	9,489
Other	6,906	6,290
Total	$ 68,274	$ 64,057

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 571,508	$ 522,150
Accounts receivable, net	169,828	143,109
Inventories	190,848	171,009
Prepaid income taxes	27,822	20,967
Prepaid expenses and other current assets	24,241	21,295
Deferred income taxes, net	18,123	15,308
Total current assets	1,002,370	893,838
DEFERRED INCOME TAXES, NET	7,495	5,438
GOODWILL	516	455
INTANGIBLE ASSETS, NET	14,013	9,227
PROPERTY, PLANT AND EQUIPMENT, NET	288,553	275,082
OTHER ASSETS	21,594	26,847
TOTAL	1,334,541	1,210,887
CURRENT LIABILITIES:
Revolving line-of-credit facilities	1,600	2,631
Current portion of long-term debt	2,000	13,333
Accounts payable	21,537	17,141
Accrued expenses and other liabilities	68,274	64,057
Deferred income taxes, net	3,670	3,241
Income taxes payable	28,690	21,672
Total current liabilities	125,771	122,075
DEFERRED INCOME TAXES AND OTHER LONG-TERM LIABILITIES	26,348	22,584
LONG-TERM DEBT, NET OF CURRENT PORTION	18,667	19,667
Total liabilities	$ 170,786	$ 164,326
COMMITMENTS AND CONTINGENCIES (NOTE 12)
IPG PHOTONICS CORPORATION STOCKHOLDERS' EQUITY:
Common stock, $0.0001 par value, 175,000,000 shares authorized; 52,721,014 shares issued and outstanding at June 30, 2015; 52,369,688 shares issued and outstanding at December 31, 2014	$ 5	$ 5
Additional paid-in capital	591,718	567,617
Retained earnings	709,860	591,202
Accumulated other comprehensive loss	(139,262)	(112,263)
Total IPG Photonics Corporation stockholders' equity	1,162,321	1,046,561
NONCONTROLLING INTERESTS	1,434	0
Total equity	1,163,755	1,046,561
TOTAL	$ 1,334,541	$ 1,210,887

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 118,590	$ 88,814
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,176	17,088
Deferred income taxes	(2,118)	(4,893)
Stock-based compensation	8,862	7,172
Realized and unrealized gains on cash and cash equivalents and unrealized gains on foreign currency transactions	(3,412)	(2,225)
Other	95	335
Provisions for inventory, warranty & bad debt	18,804	12,207
Changes in assets and liabilities that (used) provided cash:
Accounts receivable	(31,748)	(20,720)
Inventories	(33,211)	(14,988)
Prepaid expenses and other current assets	1,945	436
Accounts payable	4,422	(2,684)
Accrued expenses and other liabilities	(2,397)	(170)
Income and other taxes payable	7,067	(1,071)
Tax benefit from exercise of employee stock options	(5,665)	(2,426)
Net cash provided by operating activities	101,410	76,875
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of and deposits on property, plant and equipment	(32,606)	(45,781)
Proceeds from sales of property, plant and equipment	139	254
Acquisition of businesses, net of cash acquired	(4,958)	0
Other	86	42
Net cash used in investing activities	(37,339)	(45,485)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from line-of-credit facilities	9,432	15,376
Payments on line-of-credit facilities	(10,209)	(15,911)
Principal payments on long-term borrowings	(12,333)	(667)
Exercise of employee stock options and issuances under employee stock purchase plan	9,574	3,379
Tax benefit from exercise of employee stock options	5,665	2,426
Net cash provided by financing activities	2,129	4,603
EFFECT OF CHANGES IN EXCHANGE RATES ON CASH AND CASH EQUIVALENTS	(16,842)	(1,337)
NET INCREASE IN CASH AND CASH EQUIVALENTS	49,358	34,656
CASH AND CASH EQUIVALENTS — Beginning of period	522,150	448,776
CASH AND CASH EQUIVALENTS — End of period	571,508	483,432
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest	533	223
Cash paid for income taxes	44,728	41,525
Non-cash transactions:
Demonstration units transferred from inventory to other assets	1,479	1,318
Inventory transferred to machinery and equipment	1,072	1,030
Additions to property, plant and equipment included in accounts payable	$ 406	$ 1,209

Fair Value Measurements (Assets And Liabilities Measured At Fair Value) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 279,461	$ 267,139
Total liabilities	80	249
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	278,329	266,011
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	0	151
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,132	1,128
Total liabilities	80	98
Cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	278,329	266,011
Cash equivalents \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	278,329	266,011
Auction rate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,132	1,128
Auction rate securities \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets		0
Auction rate securities \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,132	1,128
Contingent purchase consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	80	98
Contingent purchase consideration \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities		0
Contingent purchase consideration \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities	$ 80	98
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities		151
Interest rate swap \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities		151
Interest rate swap \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities		$ 0

Consolidated Statements Of Equity - USD ($) $ in Thousands	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE LOSS	TOTAL IPG PHOTONICS CORPORATION STOCKHOLDERS' EQUITY	NONCONTROLLING INTERESTS
Balance at Dec. 31, 2013		$ 5	$ 538,908	$ 390,757	$ (1,701)		$ 0
Balance, shares at Dec. 31, 2013		51,930,978
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options, shares		172,786
Exercise of stock options and related tax benefit from exercise		$ 0	4,784
Common stock issued under employee stock purchase plan, shares		17,458
Common stock issued under employee stock purchase plan		$ 0	1,021
Stock-based compensation			7,172
Net income attributable to IPG Photonics Corporation	$ 88,814			88,814
Translation adjustments	(5,983)				(5,983)
Change in unrealized gain on derivatives, net of tax	83				83
NCI of acquired company							0
Net loss attributable to NCI	0						0
Other comprehensive loss attributable to NCI	0						0
Balance at Jun. 30, 2014	1,023,860	$ 5	551,885	479,571	(7,601)	$ 1,023,860	0
Balance, shares at Jun. 30, 2014		52,121,222
Balance at Dec. 31, 2014	1,046,561	$ 5	567,617	591,202	(112,263)		0
Balance, shares at Dec. 31, 2014		52,369,688
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options, shares		333,703
Exercise of stock options and related tax benefit from exercise		$ 0	14,131
Common stock issued under employee stock purchase plan, shares		17,623
Common stock issued under employee stock purchase plan		$ 0	1,108
Stock-based compensation			8,862
Net income attributable to IPG Photonics Corporation	118,658			118,658
Translation adjustments	(27,094)				(27,094)
Change in unrealized gain on derivatives, net of tax	95				95
NCI of acquired company							1,579
Net loss attributable to NCI	68						(68)
Other comprehensive loss attributable to NCI	68						(77)
Balance at Jun. 30, 2015	$ 1,163,755	$ 5	$ 591,718	$ 709,860	$ (139,262)	$ 1,162,321	$ 1,434
Balance, shares at Jun. 30, 2015		52,721,014

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	52,721,014	52,369,688
Common stock, shares outstanding	52,721,014	52,369,688

Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2015	Jul. 28, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2015
Entity Registrant Name	IPG PHOTONICS CORP
Entity Central Index Key	0001111928
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		52,724,374

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES From time to time, the Company may be involved in disputes and legal proceedings in the ordinary course of its business. These proceedings may include allegations of infringement of intellectual property, commercial disputes and employment matters. As of June 30, 2015 and through the filing date of these Financial Statements, the Company has no legal proceedings ongoing that management estimates could have a material effect on the Company's Consolidated Financial Statements.

Product Warranties (Summary Of Product Warranty Activity) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at January 1	$ 19,272	$ 14,997
Provision for warranty accrual	10,944	5,936
Warranty claims	(5,787)	(4,226)
Foreign currency translation	(1,107)	(132)
Balance at June 30	$ 23,322	$ 16,575