Stoneridge (SRI) 10-Q 2 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 27, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	STONERIDGE INC
Entity Central Index Key	1,043,337
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	sri
Entity Common Stock Shares Outstanding		28,475,633
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2,018

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 57,404	$ 66,003
Accounts receivable, less reserves of $913 and $1,109, respectively	156,513	142,438
Inventories, net	78,628	73,471
Prepaid expenses and other current assets	26,148	21,457
Total current assets	318,693	303,369
Long-term assets:
Property, plant and equipment, net	114,940	110,402
Intangible assets, net	74,699	75,243
Goodwill	39,439	38,419
Investments and other long-term assets, net	32,431	31,604
Total long-term assets	261,509	255,668
Total assets	580,202	559,037
Current liabilities:
Current portion of debt	4,160	4,192
Accounts payable	87,095	79,386
Accrued expenses and other current liabilities	54,223	52,546
Total current liabilities	145,478	136,124
Long-term liabilities:
Revolving credit facility	116,000	121,000
Long-term debt, net	2,706	3,852
Deferred income taxes	19,605	18,874
Other long-term liabilities	36,796	35,115
Total long-term liabilities	175,107	178,841
Shareholders' equity:
Preferred Shares, without par value, 5,000 shares authorized, none issued
Common Shares, without par value, 60,000 shares authorized, 28,966 and 28,966 shares issued and 28,490 and 28,108 shares outstanding at March 31, 2018 and December 31, 2017, respectively, with no stated value
Additional paid-in capital	227,561	228,486
Common Shares held in treasury, 476 and 786 shares at March 31, 2018 and December 31, 2017, respectively, at cost	(8,505)	(7,118)
Retained earnings	105,432	92,264
Accumulated other comprehensive loss	(64,871)	(69,560)
Total Stoneridge Inc. shareholders' equity	259,617	244,072
Total liabilities and shareholders' equity	$ 580,202	$ 559,037

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Accounts receivable, reserves (in dollars)	$ 913	$ 1,109
Preferred shares, authorized	5,000,000	5,000,000
Preferred shares, no par value
Preferred shares, issued	0	0
Common shares, authorized	60,000,000	60,000,000
Common shares, no par value
Common shares, issued	28,966,000	28,966,000
Common shares, outstanding	28,490,000	28,180,000
Common shares held in treasury, shares	476,000	786,000

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 225,930	$ 204,311
Costs and expenses:
Cost of goods sold	157,961	143,160
Selling, general and administrative	37,261	34,266
Design and development	13,861	11,721
Operating income	16,847	15,164
Interest expense, net	1,354	1,410
Equity in earnings of investee	(521)	(180)
Other expense (income), net	(599)	190
Income before income taxes	16,613	13,744
Provision for income taxes	3,233	4,571
Net income	13,380	9,173
Net loss attributable to noncontrolling interest		(30)
Net income attributable to Stoneridge, Inc.	$ 13,380	$ 9,203
Earnings per share attributable to Stoneridge, Inc.:
Basic (in dollars per share)	$ 0.47	$ 0.33
Diluted (in dollars per share)	$ 0.46	$ 0.32
Weighted-average shares outstanding:
Basic (in shares)	28,249,420	27,916,652
Diluted (in shares)	28,936,030	28,580,197

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Statement Of Other Comprehensive Income [Abstract]
Net income		$ 13,380	$ 9,173
Less: Net loss attributable to noncontrolling interest			(30)
Net income attributable to Stoneridge, Inc.		13,380	9,203
Other comprehensive income (loss), net of tax attributable to Stoneridge, Inc.:
Foreign currency translation		3,894	3,063
Unrealized gain (loss) on derivatives	[1]	795	317
Other comprehensive income, net of tax attributable to Stoneridge, Inc.		4,689	3,380
Comprehensive income attributable to Stoneridge, Inc.		$ 18,069	$ 12,583
[1]	Net of tax expense of $212 and $170 for the three months ended March 31, 2018 and 2017, respectively.

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Other Comprehensive Income [Abstract]
Tax expense (benefit) for unrealized gain (loss) on derivatives	$ 212	$ 170

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES:
Net income	$ 13,380	$ 9,173
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	6,061	5,063
Amortization, including accretion of deferred financing costs	1,807	1,472
Deferred income taxes	(243)	2,082
Earnings of equity method investee	(521)	(180)
Share-based compensation expense	1,404	2,339
Tax benefit related to share-based compensation expense	(830)	(681)
Change in fair value of contingent consideration	904
Changes in operating assets and liabilities, net of effect of business combination:
Accounts receivable, net	(14,821)	(18,648)
Inventories, net	(4,694)	(2,445)
Prepaid expenses and other assets	(3,647)	(4,760)
Accounts payable	7,841	15,734
Accrued expenses and other liabilities	3,030	661
Net cash provided by operating activities	9,671	9,810
INVESTING ACTIVITIES:
Capital expenditures	(10,505)	(7,265)
Proceeds from sale of fixed assets	9
Insurance proceeds for fixed assets	1,403
Business acquisition, net of cash acquired		(77,538)
Net cash used for investing activities	(9,093)	(84,803)
FINANCING ACTIVITIES:
Revolving credit facility borrowings	5,000	81,000
Revolving credit facility payment	(10,000)	(7,000)
Proceeds from issuance of debt	155	886
Repayments of debt	(1,378)	(4,135)
Other financing costs		(47)
Repurchase of Common Shares to satisfy employee tax withholding	(3,713)	(1,820)
Net cash provided by (used for) financing activities	(9,936)	68,884
Effect of exchange rate changes on cash and cash equivalents	759	629
Net change in cash and cash equivalents	(8,599)	(5,480)
Cash and cash equivalents at beginning of period	66,003	50,389
Cash and cash equivalents at end of period	57,404	44,909
Supplemental disclosure of cash flow information:
Cash paid for interest	1,438	1,450
Cash paid for income taxes, net	$ 5,056	$ 1,252

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Basis of Presentation [Abstract]
Basis of Presentation	(1) Basis of Presentation The accompanying condensed consolidated financial statements have been prepared by Stoneridge, Inc. (the “Company”) without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). The information furnished in the condensed consolidated financial statements includes normal recurring adjustments and reflects all adjustments, which are, in the opinion of management, necessary for a fair presentation of such financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) have been condensed or omitted pursuant to the SEC's rules and regulations. The results of operations for the three months ended March 31, 2018 are not necessarily indicative of the results to be expected for the full year. T hese unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in the Company's 2017 Form 10-K.  On January 31, 2017, the Company acquired Exploitatiemaatschappij Berghaaf B.V. (“Orlaco”), an electronics business which designs, manufactures and sells camera-based vision systems, monitors and related products. The acquisition was accounted for as a business combination, and accordingly, the Company’s condensed consolidated financial statements herein include the results of Orlaco from the acquisition date to March 31, 2018. See Note 4 to the condensed consolidated financial statements for additional details regarding the Orlaco acquisition.  The Company had a 74% controlling interest in PST Electronica Ltda. (“PST”) from December 31, 2011 through May 15, 2017 . On May 16, 2017, the Company acquired the remaining 26% noncontrolling interest in PST, which was accounted for as an equity transaction. As such, PST is now a wholly owned subsidiary. See Note 15 to the condensed consolidated financial statements for additional details regarding the acquisition of PST’s noncontrolling interest.  Also, see Note 2 for the impact of the adoption of various accounting standards on the condensed consolidated financial statements herein. 

Recently Issued Accounting Stan

Recently Issued Accounting Standards	3 Months Ended
	Mar. 31, 2018
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	(2) Recently Issued Accounting Standards  Recently Adopted Accounting Standards  In January 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-01, “Clarifying the Definition of a Business”. It revises the definition of a business and provides a framework to evaluate when an input and a substantive process are present in an acquisition to be considered a business. This guidance was effective for annual periods beginning after December 15, 2017. The Company adopted this standard on January 1, 2018 which did not have a material impact on its condensed consolidated financial statements.  In October 2016, the FASB issued ASU 2016-16, “ Accounting for Income Taxes: Intra-Entity Asset Transfers of Assets Other than Inventory (Topic 740) ”. This guidance requires that the tax effects of all intra-entity sales of assets other than inventory be recognized in the period in which the transaction occurs. The Company adopted this standard on January 1, 2018, which did not have a material impact on its condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows - Classification of Certain Cash Receipts and Cash Payments (Topic 230)”, which provides guidance on the presentation and classification of certain cash receipts and cash payments in the statement of cash flows in order to reduce diversity in practice. This ASU was effective for interim and annual periods beginning after December 15, 2017. The Company adopted this standard as of January 1, 2018, which did not have a material impact on its condensed consolidated financial statements. In May 2014, the FASB issued ASU 2014-09 “Revenue from Contracts with Customers” and related amendments, which is the new comprehensive revenue recognition standard (collectively known as Accounting Standard Codification (“ASC”) 606) that has superseded existing revenue recognition guidance under U.S. GAAP. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which a company expects to be entitled in exchange for those goods or services. To achieve this principle, an entity identifies the contract with a customer, identifies the separate performance obligations in the contract, determines the transaction price, allocates the transaction price to the separate performance obligations and recognizes revenue when each separate performance obligation is satisfied. The new standard became effective for annual and interim periods beginning after December 15, 2017. The Company adopt ed this standard on January 1, 2018 using the modified retrospective transition method. Under the modified retrospective method, the Company would recognize the cumulative effect of initially applying the standard as an adjustment to opening retained earnings at the date of initial application; however, the Company did not have any material adjustments as of the date of the adoption. The Company does not expect the adoption of ASC 606 to have a material impact on its results of operations on an ongoing basis ; however, the Company has expand ed its disclosures consistent with the requirements of the new standard and the Company will continue to evaluate new contracts to apply the framework of ASC 606. In particular , the Company will evaluate new contracts with customers analyzing the impact, if any, on revenue from the sale of production parts, particularly in regards to material rights , variable consideration and the impact of termination clauses on the timing of revenue recognition. The majority of our revenue continues to be recognized when products are shipped from our manufacturing facilities. The Company has not changed how it accounts for reimbursable pre-production costs, currently accounted for as a reduction of costs incurred . Refer to Note 3 for the expanded revenue disclosures.  Accounting Standards Not Yet Adopted In January 2018, the FASB issued ASU 2018-02, “Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This guidance gives entities the option to reclassify to retained earnings the tax effects resulting from the enactment of Tax Cuts and Jobs Act related to items in accumulated other comprehensive income (“AOCI”) that the FASB refers to as having been stranded in AOCI. The new guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted for periods for which financial statements have not yet been issued or made available for issuance, including the period the Tax Legislation was enacted. The Company will adopt this standard as of January 1, 2019, which is not expected to have a material impact on its condensed consolidated financial statements.  In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)”, which will require that a lessee recognize assets and liabilities on the balance sheet for all leases with a lease term of more than twelve months, with the result being the recognition of a right of use asset and a lease liability. The amendment is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company expects to adopt this standard as of January 1, 2019. The Company is currently evaluating the impact of adopting this standard on its condensed consolidated financial statements, which will require right of use assets and lease liabilities be recorded in the condensed consolidated balance sheet for operating leases.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2018
Revenue [Abstract]
Revenue	 ( 3 ) Revenue  The Company adopted ASC 606 using the modified retrospective method as applied to customer contracts that were not completed as of January 1, 2018. As a result, financial information for reporting periods beginning after January 1, 2018 are presented under ASC 606, while comparative financial information has not been adjusted and continues to be reported in accordance with the Company’s historical accounting policy for revenue recognition prior to the adoption of ASC 606. The Company did not record a cumulative adjustment related to the adoption of ASC 606, and the effects of the adoption were not significant.  Revenue is recognized when obligations under the terms of a contract with our customer are satisfied; generally this occurs with the transfer of control of our products and services. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. The transaction price will include estimates of variable consideration to the extent it is probable that a significant reversal of revenue recognized will not occur. Incidental items that are not significant in the context of the contract are recognized as expense. The expected costs associat ed with our base warranties continue to be recognized as expense when the products are sold. Customer returns only occur if products do not meet the specifications of the contract and are not connected to any repurchase obligations of the Company.  The Company does not have any financing components or significant payment terms as payment occurs shortly after the point of sale . Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction that are collected by the Company from a customer are excluded from revenue. Amounts billed to customers related to shipping and handling costs are included in net sales in the condensed consolidated statements of operations. Shipping and handling costs associated with outbound freight after control over a product is transferred to the customer are accounted for as a fulfillment cost and are included in cost of sales.  Revenue by Reportable Segment  Control Devices. Our Control Devices segment designs and manufactures products that monitor, measure or activate specific functions within a vehicle. This segment includes product lines such as sensors, actuators, valves and switches. We sell these products principally to the automotive market in the North American, European, and Asia Pacific markets. To a lesser extent, we also sell these products to the commercial vehicle and agricultural markets in our North America and European markets. Our customers included in these markets primarily consist of original equipment manufacturers (“OEM”) and companies supplying components directly to the OEMs (“tier one supplier”).  Electronics. Our Electronics segment designs and manufactures electronic instrument clusters, electronic control units and other driver information systems and includes the acquired Orlaco business, which designs and manufactures camera-based vision systems, monitors and related products. These products are sold principally to the commercial vehicle market primarily through our OEM and aftermarket channels in the North American and European markets, and to a lesser extent, the Asia Pacific market. The camera-based vision systems and related products are sold principally to the off-highway vehicle market in the North American and European markets.  PST. Our PST segment primarily serves the South American market and specializes in the design, manufacture and sale of in-vehicle audio and video devices, electronic vehicle security alarms, convenience accessories, vehicle tracking devices and monitoring services primarily for the automotive and motorcycle markets. PST sells its products through the aftermarket distribution channel, to factory authorized dealer installers, also referred to as original equipment services, direct to OEMs and through mass merchandisers.  The following tables disaggregate our revenue by reportable segment and geographical location (1) for the period ended March 31, 2018 and 2017:     Three months ended March 31, 2018 Control Devices Electronics PST Consolidated  Net Sales:  North America $ 104,443 $ 19,986 $ - $ 124,429  South America - - 20,545 20,545  Europe 2,891 68,544 - 71,435  Asia Pacific 8,023 1,498 - 9,521  Total net sales $ 115,357 $ 90,028 $ 20,545 $ 225,930      Three months ended March 31, 2017 Control Devices Electronics PST Consolidated  Net Sales:  North America $ 110,521 $ 12,865 $ - $ 123,386  South America - - 21,633 21,633  Europe 1,709 50,074 - 51,783  Asia Pacific 6,643 866 - 7,509  Total net sales $ 118,873 $ 63,805 $ 21,633 $ 204,311  (1) Company sales based on geographic location are where the sale originates not where the customer is located.  Performance Obligations  For OEM and tier one supplier customers, the Company enters into contracts with its customers to provide serial production parts that consist of a set of documents including, but not limited to, an Award Letter, Master Purchase Agreement and Master Terms and Conditions. For each production product, the Company enters into separate purchase orders that contain the product specifications and an agreed-upon price. The performance obligation does not exist until a customer release is received for a specific number of parts. The majority of the parts sold to OEM and tier one suppliers are specifically customized to the specific customer, with the exception of off-highway products that are common across all customers. The transaction price is equal to the contracted price per part and there is no expectation of material variable consideration in the transaction price. In addition, the majority of the contracts do not include an enforceable right to payment if the customer terminates the contract for convenience and therefore the revenue is recognized at a point in time based on the shipping terms. Certain customer contracts contain an enforceable right to payment if the customer terminate the contract for convenience and therefore are recognized over time using the cost to complete input method.  Our aftermarket products are focused on meeting the demand for repair and replacement parts, compliance parts and accessories and are sold primarily to aftermarket distributors and mass retailers in our South American, European, North American markets. Aftermarket products have one type of performance obligation which is the delivery of aftermarket parts and spare parts. For aftermarket customers, the Company typically has standard terms and conditions for all customers. In addition, aftermarket products have alternative use as they can be sold to multiple customers. Revenue for aftermarket part production contracts is recognized at a point in time when the control of the parts transfer to the customer which is based on the shipping terms. Aftermarket contracts may include variable consideration related to discounts and rebates and is included in the transaction price upon recognizing the product revenue.  A small portion of the Company’s sales are comprised of monitoring services that include both monitoring devices and fees to individual, corporate, fleet and cargo customers in our PST segment. These monitoring service contracts are generally not capable of being distinct and are accounted for a single performance obligation. We recognize revenue for our monitoring products and service s contracts over the life of the contract. There is no variable consideration associated with these contracts. The Company has the right to consideration from a customer in the amount that corresponds directly with the value to the customer of the entity’s performance to date. Therefore the Company recognizes revenue over time using the practical expedient ASC 606-10-55-18 in the amount the Company has a “right to invoice” rather than selecting an output or input method.  Contract Balances  The Company had no material contract assets , contract liabilities or capitalized contract acquisition costs as of March 31, 2018.

Acquisition of Orlaco

Acquisition of Orlaco	3 Months Ended
	Mar. 31, 2018
Acquisition of Orlaco [Abstract]
Acquisition of Orlaco	( 4 ) Acquisition of Orlaco  On January 31, 2017 , Stoneridge B.V., an indirect wholly-owned subsidiary of Stoneridge, Inc., entered into and closed an agreement to acquire Orlaco. Orlaco designs, manufactures and sells camera-based vision systems, monitors and related electronic products primarily to the heavy off-road machinery, commercial vehicle, lifting crane and warehousing and logistics industries. Stoneridge and Orlaco jointly developed the MirrorEye mirror replacement system, which is a system solution to improve the safety and fuel economy of commercial vehicles. The MirrorEye system integrates Orlaco’s vision processing technology and Stoneridge’s driver information capabilities as well as the combined software capabilities of both businesses. The ac quisition of Orlaco enhances Stoneridge’s Electronics segment global technical capabilities in vision systems and facilitates entry into new markets. The aggregate consideration for the Orlaco acquisition on January 31, 2017 was €74,939 ( $79,675 ), which included customary estimated adjustments to the purchase price. The Company paid €67,439 ( $71,701 ) in cash, and €7,500 ( $7,974 ) is held in an escrow account for a period of eighteen months to secure the payment obligations of the seller under the terms of the purchase agreement. The purchase price is subject to certain customary adjustments set forth in the purchase agreement. The escrow amount will be transferred promptly following the completion of the escrow period. The Company may also be required to pay an additional amount up to €7,500 as contingent consideration (“earn-out consideration”) if certain performance targets are achiev ed during the first two years.  The acquisition date fair value of the total consideration transferred consisted of the following:     Cash $ 79,675  Fair value of earn-out consideration and other adjustments 4,208  Total purchase price $ 83,883   The following table summarizes the fair value of the assets acquired and liabilities assumed at the acquisition date (including measurement period adjustments). Based upon information obtained, certain of the fair value amounts previously estimated were adjusted during the measurement period. These measurement period adjustments related to updated valuation reports and appraisals received from our external valuation specialists, as well as revisions to internal estimates. At March 31, 2018, t he purchase price and associated allocation reflect s the final valuation results and purchase price adjustments. There were no changes in estimates recorded during the quarter ended March 31, 2018 .   At January 31, 2017  Cash $ 2,165  Accounts receivable 7,929  Inventory 9,409  Prepaid and other current assets 298  Property, plant and equipment 6,668  Identifiable intangible assets 38,739  Other long-term assets 6  Total identifiable assets acquired 65,214   Accounts payable 3,020  Other current liabilities 834  Deferred tax liabilities 10,206  Warranty liability 899  Total liabilities assumed 14,959  Net identifiable assets acquired 50,255  Goodwill 33,628  Net assets acquired $ 83,883  Assets acquired and liabilities assumed were recorded at estimated fair values based on management's estimates, available information, and reasonable and supportable assumptions. Also, the Company utilized a third-party to assist with certain estimates of fair values, including: · Fair value estimate for inventory was based on a comparative sales method · Fair value estimate for property, plant and equipment was based on appraised values utilizing cost and market approaches · Fair values for intangible assets were based on a combination of market and income approaches, including the relief from royalty method · Fair value for the earn-out consideration was based on a Monte Carlo simulation utilizing forecasted earnings before interest, taxes, depreciation and amortization (“EBITDA”) for the 2017 and 2018 earn-out period as well as a growth rate reduced by the market required rate of return These fair value measurements are classified within Level 3 of the fair value hierarchy. See Note 6 for details on fair value hierarchy. Goodwill is calculated as the excess of the fair value of consideration transferred over the fair market value of the identifiable assets and liabilities and represents the future economic benefits arising from other assets acquired that could not be separately recognized. The goodwill is not deductible for income tax purposes. Of the $38,739 of acquired identifiable intangible assets, $27,518 was assigned to customer lists with a 15 -year useful life; $5,142 was provisionally assigned to trademarks with a 20- year useful life; and $6,079 was provisionally assigned to technology with a 7 - year weighted-average useful life.  The Company recognized $1,2 14 9 of acquisition related costs in the condensed consolidated statement of operations as a component of selling, general and administrative (“SG&A”) expense for the three months ended March 31, 2017. There were no acquisition related costs for the three months ended March 31, 2018.  Included in the Company's statement of operations for the three m onths ended March 31, 201 8 and 2017 are post-acquisition sales and net income of $11,100 and $600 , respectively, related to Orlaco which are included in results of the Electronics segment. The Company’s statement of operations for the three m onths ended March 31 , 2017 included $9 79 of expense in cost of goods sold (“COGS”) associated with the step-up of the Orlaco inventory to fair value . The Company’s statement of operations for the three m onths ended March 31, 2018 included $369 of expense for the fair value adjustment for earn-out consideration in SG&A expenses .  The following unaudited pro forma information reflects the Company’s condensed consolidated results of operations as if the acquisition had taken place on January 1, 201 7 . The unaudited pro forma information is not necessarily indicative of the results of operations that the Company would have reported had the transaction actually occurred at the beginning of these periods, nor is it necessarily indicative of future results.      Three months ended March 31, 2017   Net sales $ 209,341  Net income attributable to Stoneridge, Inc. and subsidiaries $ 9,307 

Inventories

Inventories	3 Months Ended
	Mar. 31, 2018
Inventories [Abstract]
Inventories	( 5 ) Inventories Inventories are valued at the lower of cost (using either the first-in, first-out (“FIFO”) or average cost methods) or net realizable value. The Company evaluates and adjusts as necessary its excess and obsolescence reserve on a quarterly basis. Excess inventories are quantities of items that exceed anticipated sales or usage for a reasonable period. The Company has guidelines for calculating provisions for excess inventories based on the number of months of inventories on-hand compared to anticipated sales or usage. Management uses its judgment to forecast sales or usage and to determine what constitutes a reasonable period. Inventory cost includes material, labor and overhead. Inventories consisted of the following:    March 31, December 31,  2018 2017  Raw materials $ 48,311 $ 47,588  Work-in-progress 8,095 5,806  Finished goods 22,222 20,077  Total inventories, net $ 78,628 $ 73,471  Inventory valued using the FIFO method was $ 59,021 and $54,837 at March 31, 2018 and December 31, 2017 , respectively. Inventory valued using the average cost method was $19,607 and $18,634 at March 31 , 201 8 and December 31, 2017 , respectively.  .

Financial Instruments and Fair

Financial Instruments and Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Financial Instruments and Fair Value Measurements [Abstract]
Financial Instruments and Fair Value Measurements	(6) Financial Instruments and Fair Value Measurements Financial Instruments A financial instrument is cash or a contract that imposes an obligation to deliver, or conveys a right to receive cash or another financial instrument. The carrying values of cash and cash equivalents, accounts receivable and accounts payable are considered to be representative of fair value because of the short maturity of these instruments. Derivative Instruments and Hedging Activities On March 31, 2018, the Company had open foreign currency forward contracts which are used solely for hedging and not for speculative purposes. Management believes that its use of these instruments to reduce risk is in the Company's best interest. The counterparties to these financial instruments are financial institutions with investment grade credit ratings.  Foreign Currency Exchange Rate Risk The Company conducts business internationally and therefore is exposed to foreign currency exchange rate risk. The Company uses derivative financial instruments as cash flow and fair value hedges to manage its exposure to fluctuations in foreign currency exchange rates by reducing the effect of such fluctuations on foreign currency denominated intercompany transactions, inventory purchases and other foreign currency exposures. The currencies hedged by the Company during 2018 and 2017 included the euro and Mexican peso . In addition, the Company hedged the U.S. dollar against the Swedish krona and euro on behalf of its European subsidiaries in 2018. These forward contracts were executed to hedge forecasted transactions and certain transactions have been accounted for as cash flow hedges. As such, the effective portion of the unrealized gain or loss was deferred and reported in the Company’s condensed consolidated balance sheets as a component of accumulated other comprehensive loss. The cash flow hedges were highly effective. The effectiveness of the transactions has been and will be measured on an ongoing basis using regression analysis and forecasted future purchases of the currency.  In certain instances, the foreign currency forward contracts do not qualify for hedge accounting or are not designated as hedges, and therefore are marked-to-market with gains and losses recognized in the Company's condensed consolidated statement of operations as a component of other expense (income) , net. The Company's foreign currency forward contracts offset a portion of the gains and losses on the underlying foreign currency denominated transactions as follows: Euro-denominated Foreign Currency Forward Contract At March 31, 2018 and December 31, 2017, the Company held foreign currency forward contracts with underlying notional amount of $1,486 , to reduce the exposure related to the Company's euro-denominated intercompany loans. The current contract expires in June 2018 . The euro-denominated foreign currency forward contract was not designated as a hedging instrument. The Company recognized a loss of $20 and $ 19 for the three months ended March 31, 2018 and 201 7, respectively, in the condensed consolidated statements of operations as a component of other expense , net related to the euro-denominated contract. U. S. dollar-denominated Foreign Currency Forward Contracts – Cash Flow Hedges The Company entered into on behalf of one of its European Electronics subsidiaries whose functional currency is the Swedish krona, U.S. dollar-denominated currency contracts with a notional amount at March 31, 2018 of $5,800 which expire ratably on a monthly basis from April 2018 through December 2018. There were no such contracts at December 31, 2017.  The Company entered into on behalf of one of its European Electronics subsidiaries whose functional currency is the euro, U.S. dollar-denominated currency contracts with a notional amount at March 31, 2018 of $1,600 which expire ratably on a monthly basis from April 2018 through December 2018. There were no such contracts at December 31, 2017.  The Company evaluated the effectiveness of the U.S. dollar-denominated foreign currency forward contracts held as of March 31, 2018 and concluded that the hedges were highly effective .  Mexican Peso-denominated Foreign Currency Forward Contracts – Cash Flow Hedge The Company holds Mexican peso-denominated foreign currency forward contracts with notional amounts at March 31, 2018 of $6,043 which expire ratably on a monthly basis from April 2018 through December 2018, compared to a notional amount of $9,143 at December 31, 2017.  The Company evaluated the effectiveness of the Mexican peso-denominated foreign currency forward contracts held as of March 31 , 2018 and December 31, 2017 and concluded that the hedges were highly effective.   The notional amounts and fair values of derivative instruments in the condensed consolidated balance sheets were as follows:     Prepaid expenses Accrued expenses and  Notional amounts (A) and other current assets other current liabilities  March 31, December 31, March 31, December 31, March 31, December 31,  2018 2017 2018 2017 2018 2017  Derivatives designated as hedging instruments:  Cash flow hedges:  Forward currency contracts $ 13,443 $ 9,143 $ 786 $ - $ - $ 221  Derivatives not designated as hedging instruments:  Forward currency contracts $ 1,486 $ 1,486 $ - $ - $ 68 $ 48    (A) Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars.  Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the three months ended March 31 are as follows:     Gain (loss) reclassified from  Gain (loss) recorded in other other comprehensive income  comprehensive income (loss) (loss) into net income (A)  2018 2017 2018 2017  Derivatives designated as cash flow hedges:  Forward currency contracts $ 1,159 $ 516 $ (152) $ 29    (A) Gains and losses reclassified from other comprehensive income (loss) into net income were recognized in cost of goods sold in the Company's condensed consolidated statements of operations.  The net deferred gain of $ 786 on the cash flow hedge derivatives will be reclassified from other comprehensive income (loss) to the condensed consolidated statements of operations through December 2018.  Fair Value Measurements The Company’s assets and liabilities are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of the inputs used. Fair values estimated using Level 1 inputs consist of quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Fair values estimated using Level 2 inputs, other than quoted prices, are observable for the asset or liability, either directly or indirectly and include among other things, quoted prices for similar assets or liabilities in markets that are active or inactive as well as inputs other than quoted prices that are observable. For forward currency contracts , inputs include foreign currency exchange rates . Fair values estimated using Level 3 inputs consist of significant unobservable inputs.  The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of inputs used.     March 31, 2018 December 31, 2017  Fair values estimated using  Level 1 Level 2 Level 3  Fair value inputs inputs inputs Fair value  Financial assets carried at fair value:  Forward currency contracts $ 786 $ - $ 786 $ - $ -  Total financial assets carried at fair value $ 786 $ - $ 786 $ - $ -   Financial liabilities carried at fair value:  Forward currency contracts $ 68 $ - $ 68 $ - $ 269  Earn-out consideration 21,905 - - 21,905 20,746  Total financial liabilities carried at fair value $ 21,973 $ - $ 68 $ 21,905 $ 21,015    The following table sets forth a summary of the change in fair value of the Company’s Level 3 financial liabilities related to earn-out consideration that are measured at fair value on a recurring basis.     Orlaco PST Total  Balance at December 31, 2017 $ 8,637 $ 12,109 $ 20,746  Change in fair value 369 535 904  Foreign currency adjustments 235 20 255  Balance at March 31, 2018 $ 9,241 $ 12,664 $ 21,905  The earn-out consideration obligations related to Orlaco and PST are recorded within other long-term liabilities on the condensed consolidated balance sheet.  The increase in fair value of earn-out consideration related to the Orlaco acquisition is primarily due to actual performance exceeding forecasted performance as well as the reduced time from the current period end to the payment date and foreign currency. The Orlaco earn-out consideration has reached the capped amount of €7,500 as of the quarter ended March 31, 2018. The increase in fair value of earn-out consideration for PST was due to the reduced time from the current period end to the payment date as well as foreign currency translation. The fair value of the Orlaco and PST earn-out consideration is based on forecasted EBITDA during the performance periods.  There were no transfers in or out of Level 3 from other levels in the fair value hierarchy for the three months ended March 31, 2018.  Except for the fair value of assets acquired and liabilities assumed related to the Orlaco acquisition discussed in Note 3, there were no non-recurring fair value measurements for the periods presented.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2018
Share-Based Compensation [Abstract]
Share-Based Compensation	 (7) Share-Based Compensation Compensation expense for share-based compensation arrangements, which is recognized in the condensed consolidated statements of operations as a component of SG&A expenses, was $1,404 and $2,339 for the three months ended March 31 , 2018 and 2017, respectively . The three months ended March 31, 2018 included expenses related to higher attainment of performance based awards which was offset by the forfeiture of certain grants associated with employee resignations . The three months ended March 31, 2017 included expenses related to higher attainment of performance based awards and accelerated expense associated with the retirement of eligible employee s. 

Debt

Debt	3 Months Ended
	Mar. 31, 2018
Debt [Abstract]
Debt	  (8) Debt  Debt consisted of the following at March 3 1 , 201 8 and December 31, 201 7 :    March 31, December 31, Interest rates at  2018 2017 March 31, 2018 Maturity  Revolving Credit Facility  Credit Facility $ 116,000 $ 121,000 2.92% - 5.00 % September 2021   Debt  PST short-term obligations 1,647 - 11.46% March 2019  PST long-term notes 5,204 8,016 9.0% - 11.84% 2019 -2021  Other 15 28  Total debt 6,866 8,044  Less: current portion (4,160) (4,192)  Total long-term debt, net $ 2,706 $ 3,852     Revolving Credit Facility On November 2, 2007, the Company entered into an asset-based credit facility, which permits borrowing up to a maximum level of $100,000 . The Company entered into an Amended and Restated Credit and Security Agreement and a Second Amended and Restated Credit and Security Agreement on September 20, 2010 and December 1, 2011, respectively.  On September 12, 2014, the Company entered into a Third Amended and Restated Credit Agreement (the “Amended Agreement” or “Credit Facility”). The Amended Agreement provides for a $300,000 revolving credit facility, which replaced the Company’s existing $100,000 asset-based credit facility and includes a letter of credit subfacility, swing line subfacility and multicurrency subfacility. The Amended Agreement also has an accordion feature which allows the Company to increase the availability by up to $80,000 upon the satisfaction of certain conditions. The Amended Agreement extended the termination date to September 12, 2019 from December 1, 2016. On March 26, 2015, the Company entered into Amendment No. 1 to the Amended Agreement which modified the definition of Consolidated EBITDA to allow for the add back of cash premiums and other non-cash charges related to the amendment and restatement of the Amended Agreement and the early extinguishment of the Company’s 9.5% Senior Secured Notes. Consolidated EBITDA is used in computing the Company’s leverage ratio and interest coverage ratio which are covenants within the Amended Agreement. On February 23, 2016, the Company entered into Amendment No. 2 to the Amended Agreement which amended and waived any default or potential defaults with respect to the pledging as collateral additional shares issued by a wholly owned subsidiary and newly issued shares associated with the formation of a new subsidiary. On August 12, 2016 , the Company entered into Amendment No. 3 to the Amended Agreement which extended of the expiration date of the Agreement by two years to September 12, 2021 , increased the borrowing sub-limit for the Company’s foreign subsidiaries by $30,000 to $80,000 , increased the basket of permitted loans and investments in foreign subsidiaries by $5,000 to $30,000 , and provided additional flexibility to the Company for certain permitted corporate transactions involving its foreign subsidiaries as defined in the Agreement. As a result of Amendment No. 3, the Company capitalized deferred financing costs of $339 , which will be amortized over the remaining term of the Credit Facility. On January 30, 2017, the Company entered into Consent and Amendment No. 4 to the Amended Agreement which amended certain definitions, schedules and exhibits of the Credit Facility, consented to a Dutch Reorganization, and consented to the Orlaco acquisition. As a result of Amendment No. 4, the Company capitalized deferred financing costs of $61 , which will be amortized over the remaining term of the Credit Facility.     Borrowings under the Amended Agreement bear interest at either the Base Rate, as defined, or the LIBOR Rate, at the Company’s option, plus the applicable margin as set f orth in the Amended Agreement. The Company is also subject to a commitment fee ranging from 0.20% to 0.35% based on the Company’s leverage ratio. The Amended Agreement requires the Company to maintain a maximum leverage ratio of 3.00 to 1.00, and a minimum interest coverage ratio of 3.50 to 1.00 and places a maximum annual limit on capital expenditures. The Amended Agreement also contains other affirmative and negative covenants and events of default that are customary for credit arrangements of this type including covenants which place restrictions and/or limitations on the Company’s ability to borrow money, make capital expenditures and pay dividends.  Borrowings outstanding on the Credit Facility were $116,000 and $121,000 at March 31 , 201 8 and December 31, 201 7 , respectively. Borrowing s de creased under the Credit Facility due to voluntary principal repayments.  The Company was in compliance with all Credit Facility covenants at March 31, 2018 and December 31, 2017 .  The Company also has outstanding letters of credit of $2,008 at March 31 , 201 8 and December 31, 201 7 .  Debt PST maintains several short-term obligations and long-term notes used for working capital purposes which have fixed or variable interest rates. The weighted-average interest rates of short term and long-term debt of PST at March 31 , 201 8 was 11.5% and 10.3% . Depending on the specific note, interest is payable either monthly or annually. Principal repayments on PST debt at March 31, 2018 are as follows : $4 ,145 from April 20 18 through March 2019 , $ 1,552 from April 20 19 through December 201 9 , $ 602 in 2020 and $ 552 in 20 21 . PST was in compliance with all debt covenants at March 31, 2018 and December 31, 2016 .  The Company's wholly-owned subsidiary located in Stockholm, Sweden, has an overdraft credit line which allows overdrafts on the subsidiary's bank account up to a maximum level of 20,000 Swedish krona, or $2,398 and $2,439 , at March 31 , 201 8 and December 31, 201 7 , respectively. At March 31 , 201 8 and December 31, 2017 , there was no balance outstanding on this overdraft credit line.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	(9) Earnings Per Share Basic earnings per share was computed by divi ding net income by the weighted- average number of Common Shares outstand ing for each respective period. Diluted earnings per share was calculated by dividing net income by the weighted-average of all potentially dilutive Common Shares that were outstanding during the periods presented. As the Company adopted ASU 2016-09 on January 1, 2017 utilizing the prospective transition method, the weighted-average dilutive Common Shares calculation excludes the excess tax benefit from the treasury stock method for the three months ended March 31, 2018 and 2017.  Weighted-average Common Shares outstanding used in calculating basic and diluted earnings per share were as follows:     Three months ended March 31 2018 2017  Basic weighted-average Common Shares outstanding 28,249,420 27,916,652  Effect of dilutive shares 686,610 663,545  Diluted weighted-average Common Shares outstanding 28,936,030 28,580,197   There were no performance- based rest ricted Common Shares outstanding at March 31, 2018 or 2017. There were 622,960 and 750,720 performance-based right to receive Common Shares outstanding at March 31, 2018 and 2017, respectively. The right to receive Common Shares are included in the computation of diluted earnings per share based on the number of Common Shares that would be issuable if the end of the quarter were the end of the contingency period .

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss by Component	3 Months Ended
	Mar. 31, 2018
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Changes in Accumulated Other Comprehensive Loss by Component	( 10 ) Changes in Accumulated Other Comprehensive Loss by Component  Changes in accumulated other comprehensive loss for the three months ended March 31 , 201 8 and 201 7 were as follows:                  Foreign Unrealized  currency gain (loss)  translation on derivatives Total  Balance at January 1, 2018 $ (69,417) $ (143) $ (69,560)   Other comprehensive income before reclassifications 3,894 915 4,809  Amounts reclassified from accumulated other  comprehensive loss - (120) (120)  Net other comprehensive income, net of tax 3,894 795 4,689  Balance at March 31, 2018 $ (65,523) $ 652 $ (64,871)   Balance at January 1, 2017 $ (67,895) $ (18) $ (67,913)   Other comprehensive income before reclassifications 3,063 336 3,399  Amounts reclassified from accumulated other  comprehensive loss - (19) (19)  Net other comprehensive income, net of tax 3,063 317 3,380   Balance at March 31, 2017 $ (64,832) $ 299 $ (64,533) 

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies [Abstract]
Commitments and Contingencies	(11 ) Commitments and Contingencies In the ordinary course of business, the Company is subject to a broad range of claims and legal proceedings that relate to contractual allegations, product liability, tax audits, patent infringement, employment-related matters and environmental matters. The Company establishes accruals for matters which it believes that losses are probable and can be reasonably estimable. Although it is not possible to predict with certainty the outcome of these matters, the Company is of the opinion that the ultimate resolution of these matters will not have a material adverse effect on its condensed consolidated results of operations or financial position. As a result of environmental studies performed at the Company’s former facility located in Sarasota, Florida, the Company became aware of soil and groundwater contamination at the site. The Company engaged an environmental engineering consultant to assess the level of contamination and to develop a remediation and monitoring plan for the site. Soil remediation at the site was completed during the year ended December 31, 2010. A remedial action plan was approved by the Florida Departme nt of Environmental Protection and groundwater remediation began in the fourth quarter of 2015. During the three months ended March 31 , 2018 and 2017 , environmental remediation costs incurred were immaterial. At March 31, 2018 and December 31, 201 7 , the Company accrued a remaining undiscounted liability of $132 and $265 , respectively, related to future remediation costs. At March 31 , 201 8 and December 31, 201 7 , $132 and $253 , r espectively, were recorded as a component of accrued expenses and other current liabilities in the condensed consolidated balance sheets while the remaining amount was recorded as a component of other long-term liabilities . C osts associated with the recorded liability will be incurred to complete the groundwater remediation, with the balance relating to monitoring costs to be incurred over multiple years. The recorded liability is based on assumptions in the remedial action plan. Although the Company sold the Sarasota facility and related property in December 2011, the liability to remediate the site contamination remains the responsibility of the Company. Due t o the ongoing site remediation, the Company is currently required to maintain a $1,489 letter of credi t for the benefit of the buyer.  Royal v. Stoneridge, Inc. et al. was a legal proceeding in the United States District Court for the Western District of Oklahoma, Case No. 5:14-cv-01410-F. Plaintiffs filed this putative class action against the Company, Stoneridge Control Devices, Inc., and others on December 19, 2014. Plaintiffs allege d that the Company was involved in the vertical chain of manufacture, distribution, and sale of a CD that was incorporated into Dodge Ram trucks purchased by Plaintiffs between 1999 and 2006. Plaintiffs allege d that the Company and Stoneridge Control Devices, Inc. breached various express and implied warranties, including the implied warranty of merchantability. The putative class consisted of all owners of vehicles equipped with the subject CD, which includes various Dodge Ram trucks and other manual transmission vehicles manufactured from 1997–2007, which Plaintiffs allege d is more than one million vehicles. On September 28, 2017, the Company reached an agreement with Plaintiffs to settle the matter. Under the terms of the settlement, which was approved by the Court on January 30, 2018, the Company will provide a replacement CD to each member of the settlement class who files a claim form with evidence of eligibility to participate. The terms of the settlement do not require the Company to provide members of the settlement class with any cash payments or to reimburse any installation costs associated with replacement of the CDs. Counsel for Plaintiffs and the settlement class were awarded attorneys’ fees and costs in an amount of $375 . Counsel for Plaintiffs and the settlement class were also awarded incentive payments to each of the three named Plaintiffs in an amount of $5 each. The Company previously accrued $525 as of December 31, 2017 related to this matter. In February 2018, the Company paid the attorneys’ fees and costs and the awarded incentive payments in the amount of $375 and $15 , respectively. The total cost of the settlement remains uncertain because it is difficult to predict how many members of the proposed settlement class will request a replacement CD. The Company believes the likelihood of loss is probable and therefore the remaining amount accrued of $93 as of March 31, 2018, within accrued expenses and other current liabilities in the condensed consolidated statement of operations, is an estimate of exposure for potential settlement class members that may request a replacement CD.  On May 24, 2013, the State Revenue Services of São Paulo issued a tax deficiency notice against PST claiming that the vehicle tracking and monitoring services it provides should be classified as communication services, and therefore subject to the State Value Added Tax – ICMS. The State Revenue Services assessment imposed the 25.0% ICMS tax on all revenues of PST related to the vehicle tracking and monitoring services rendered during the period from January 2009 through December 2010. The Company believes that the vehicle tracking and monitoring services are non-communication services, as defined under Brazilian tax law, subject to the municipal ISS tax, not communication services subject to state ICMS tax as claimed by the State Revenue Services of São Paulo. T h e Brazil Administrative Court issued a final ruling on February 27, 2018 in PST’s favor for the period from January 2009 through December 2010, therefore there is no possibility that the State of Sao Paulo can appeal this judgement and the likelihood of loss is not probable. As a result of the above, as of March 31, 2018 and December 31, 201 7 , no accrual has been recorded with respect to the tax assessment. PST has civil, labor and other tax contingencies for which the likelihood of loss is deemed to be reasonably possible, but not probable, by the Company’s legal advisors in Brazil. As a result, no provision has been recorded with respect to these contingencies, which amounted to R$38,100 ( $11,500 ) and R$33,800 ( $10,200 ) at March 31, 2018 and December 31, 201 7 , respectively. An unfavorable outcome on these contingencies could result in significant cost to PST and adversely affect its results of operations.  Insurance Recoveries  The Company incurred losses and incremental costs related to the damage to assets caused by a storm at its Mexican production facility in the fourth quarter of 2016 and is pursuing recovery of such costs under applicable insurance policies. Anticipated proceeds from insurance recoveries related to losses and incremental costs that have been incurred (“loss recoveries”) are recognized when receipt is probable. Anticipated proceeds from insurance recoveries in excess of the net book value of damaged property, plant and equipment (“insurance gain contingencies”) are recognized when all contingencies related to the claim have been resolved. L oss recoveries related to the damage of inventory and incremental costs included in costs of sales were not significant for the three months ended March 31, 2018 and 2017, respectively . There were no l oss recoveries and insurance gain contingencies recognized in the three months ended March 31, 2018 and 2017 related to the damage of property, plant and equipment included within SG&A expense. As of December 31, 2017, the Company had confirmation of the open insurance claim and recorded a receivable of $1,644 . The cash payment was subsequently collected in January 2018. Cash proceeds related to the damage of in ventory and incremental costs were $241 and $500 for the three months ended March 31, 2018 and 2017, respectively, and are included in cash flows from operating activities . C ash proceeds related to the damage of property, plant and equipment of $1,403 are included in cash flows from investing activities for the three months ended March 31, 2018 .  Product Warranty and Recall Amounts accrued for product warranty and recall claims are established based on the Company's best estimate of the amounts necessary to settle existing and future claims on products sold as of the balance sheet dates. These accruals are based on several factors including past experience, production changes, industry developments and various other considerations including insurance coverage. The Company can provide no assurances that it will not experience material claims or that it will not incur significant costs to defend or settle such claims beyond the amounts accrued or beyond what the Company may recover from its suppliers. The current portion of product warranty and recall is included as a component of accrued expenses and other current liabilities in the condensed consolidated balance sheets. Product warranty and recall included $3,347 and $3,112 of a long-term liability at March 31, 2018 and December 31, 201 7 , respectively, which is included as a component of other long-term liabilities in the condensed consolidated balance sheets.  The following provides a reconciliation of changes in product warranty and recall liability:    Three months ended March 31 2018 2017  Product warranty and recall at beginning of period $ 9,978 $ 9,344  Accruals for products shipped during period 2,274 1,503  Assumed warranty liability related to Orlaco - 1,462  Aggregate changes in pre-existing liabilities due to claim developments 387 1,572  Settlements made during the period (1,772) (2,314)  Foreign currency translation (19) 97  Product warranty and recall at end of period $ 10,848 $ 11,664 

Business Realignment

Business Realignment	3 Months Ended
	Mar. 31, 2018
Business Realignment [Abstract]
Business Realignment	 (1 2 ) Business Realignment  The Company regularly evaluates the performance of its businesses and cost structures, including personnel, and makes necessary changes thereto in order to optimize its results. The Company also evaluates the required skill sets of its personnel and periodically makes strategic changes. As a consequence of these actions, the Company incurs severance related costs which are referred to as business realignment charges.  Business realignment charges by reportable segment were as follows:     Three months ended March 31 2018 2017  PST (A) $ 222 $ 171  Total business realignment charges $ 222 $ 171   (A) Severance costs for the three months ended March 31 , 2018 related to SG&A were $222. Severance costs for the three months ended March 31, 2017 related to COGS and SG&A were $90 and $81 , respectively.    Business realignment charges classified by statement of operations line item were as follows:      Three months ended March 31 2018 2017  Cost of goods sold $ - $ 90  Selling, general and administrative 222 81  Total business realignment charges $ 222 $ 171 

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Taxes [Abstract]
Income Taxes	(13 ) Income Taxes  The Company computes its consolidated income tax provision each quarter based on an estimated annual effective tax rate (“EAETR”), as required. The Company is required to reduce deferred tax assets by a valuation allowance if, based on all available evidence, it is considered more likely than not that some portion or all of the benefit of the deferred tax assets will not be realized in future periods. The Company also records the income tax impact of certain discrete, unusual or infrequently occurring items including changes in judgment about valuation allowances and effects of changes in tax laws or rates, in the interim period in which they occur.  When a company maintains a valuation allowance in a particular jurisdiction, no net income tax expense (benefit) will typically be provided on income (loss) for that jurisdiction on an annual basis. Jurisdictions with projected income that maintain a valuation allowance typically will form part of EAETR calculation discussed above. However, jurisdictions with a projected loss for the year that maintain a valuation allowance are excluded from the projected annual effective income tax rate calculation. Instead, the income tax expense for these jurisdictions is computed separately.  The actual year to date income tax expense is the product of the most current projected annual effective income tax rate and the actual year to date pre-tax income adjusted for any discrete tax items. The income tax expense for a particular quarter, except for the first quarter, is the difference between the year to date calculation of income tax expense and the year to date calculation for the prior quarter.  Therefore, the actual effective income tax rate during a particular quarter can vary significantly based upon the jurisdictional mix and timing of actual earnings compared to projected annual earnings, permanent items, earnings for those jurisdictions that maintain a valuation allowance, tax associated with jurisdictions excluded from the projected annual effective income tax rate calculation and discrete items.  The Company recognized income tax expense of $ 3,233 and $4,571 for U.S. federal, state and foreign income taxes for the three months ended March 31, 2018 and 2017, respectively. The decrease in income tax expense for the three months ended March 31, 2018 compared to the same period for 2017 was primarily related to the impact of the Tax Cuts and Jobs Act (“Tax Legislation”) enacted in the United States on December 22, 2017. T he effective tax rate de creased to 19.5% in the first quarter of 2018 from 33.3% in the first quarter of 2017 primarily due the impact of the Tax Legislation compared to the same period in 2017.  The Company has recognized the estimated impact of the Tax Legislation to its 2018 tax position in its EAETR calculation. The Company continues to examine the potential impact of certain provisions of the Tax Legislation that could affect its 2018 EAETR, including the provisions related to global intangible low-taxed income (“GILTI”), foreign derived intangible income (“FDII”) and the base erosion and anti-abuse tax (“BEAT”). Accordingly, the Company's 2018 EAETR may change in subsequent interim periods as additional analysis is completed.  The Tax Legislation significantly revises the U.S. corporate income tax by, among other things, lowering corporate income tax rates imposing a one-time transition tax on deemed repatriated earnings of foreign subsidiaries, imposing a base erosion and anti-abuse tax, and imposing a tax on global intangible low taxed income. Pursuant to the guidance within SEC Staff Accounting Bulletin No. 118 (“SAB 118”), as of December 31, 2017, the Company continues to analyze certain aspects of the Tax Legislation and refine its assessment, the ultimate impact of the Tax Legislation may differ from these estimates due to continued analysis or further regulatory guidance that may be issued as a result of the Tax Legislation.  

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	(1 4 ) Segment Reporting Operating segments are defined as components of an enterprise that are evaluated regularly by the Company's chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company's chief o perating decision maker is the Chief Executive O fficer. The Company has three reportable segments , Control Devic es, Electronics, and PST , which also represent its operating segments. The Control Devices reportable segment produces sensors, switches, valves and actuators. The Electronics reportable segment produces electronic instrument clusters, electronic control units and other driver information systems and includes the Orlaco business which designs and manufactures camera-based vision systems, monitors and related products using its vision processing technology. The PST reportable segment designs and manufactures electronic vehicle security alarms, convenience accessories, vehicle tracking devices and monitoring services and in-vehicle audio and video devices.  The accounting policies of the Company's reportable segments are the same as those described in Note 2, “Summary of Significant Accounting Policies” of the Company's 2017 Form 10-K. The Company's management evaluates the performance of its reportable segments based primarily on revenues from external customers and operating income . Inter-segment sales are accounted for on terms similar to those to third parties and are eliminated upon consolidation.  The financial information presented below is for our three reportable operating segments and includes adjustments for unallocated corporate costs and intercompany eliminations, where applicable. Such costs and eliminations do not meet the requirements for being classified as an operating segment. Corporate costs include various support functions, such as information technology, corporate finance, legal, executive administration and human resources.   A summary of financial information by reportable segment is as follows:      Three months ended March 31, 2018 2017  Net Sales:  Control Devices $ 115,357 $ 118,873  Inter-segment sales 2,181 783  Control Devices net sales 117,538 119,656  Electronics (D) 90,028 63,805  Inter-segment sales 10,472 11,356  Electronics net sales 100,500 75,161  PST 20,545 21,633  Inter-segment sales 2 -  PST net sales 20,547 21,633   Eliminations (12,655) (12,139)  Total net sales $ 225,930 $ 204,311  Operating Income (Loss):  Control Devices $ 17,879 $ 19,084  Electronics (D) 7,880 5,557  PST 150 579  Unallocated Corporate (A) (9,062) (10,056)  Total operating income $ 16,847 $ 15,164  Depreciation and Amortization:  Control Devices $ 2,795 $ 2,699  Electronics (D) 2,291 1,572  PST 2,505 2,088  Unallocated Corporate 197 99  Total depreciation and amortization (B) $ 7,788 $ 6,458  Interest Expense, net:  Control Devices $ 19 $ 54  Electronics 34 38  PST 338 572  Unallocated Corporate 963 746  Total interest expense, net $ 1,354 $ 1,410  Capital Expenditures:  Control Devices $ 5,746 $ 3,447  Electronics (D) 2,773 2,351  PST 1,259 884  Unallocated Corporate (C) 727 583  Total capital expenditures $ 10,505 $ 7,265         March 31, December 31,  2018 2017  Total Assets:  Control Devices $ 174,608 $ 164,632  Electronics 276,252 252,324  PST 99,102 100,382  Corporate (C) 366,349 377,657  Eliminations (336,109) (335,958)  Total assets $ 580,202 $ 559,037    (A) Unallocated Corporate expenses include, among other items, finance, legal, human resources and information technology costs and share-based compensation. (B) These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets. (C) Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, equity investments and investments in subsidiaries.   The following tables present net sales and long-term assets for each of the geographic areas in which the Company operates:     Three months ended March 31 2018 2017  Net Sales:  North America $ 124,429 $ 123,386  South America 20,545 21,633  Europe and Other (D) 80,956 59,292  Total net sales $ 225,930 $ 204,311      March 31, December 31,  2018 2017   Long-term Assets:  North America $ 93,615 $ 89,997  South America 57,430 58,989  Europe and Other 110,464 106,682  Total long-term assets $ 261,509 $ 255,668               (D) The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4 .

Investments

Investments	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
Investments	  (1 5 ) Investments Minda Stoneridge Instruments Ltd. The Company has a 49% interest in Minda Stoneridge Instruments Ltd. (“Minda”) , a company based in India that manufactures electronics, instrumentation equipment and sensors primarily for the motorcycle and commercial vehicle market s . The investment is accounted for under the equity method of accounting. The Company's investment in Minda , recorded as a component of investments and other long-term assets, net on the condensed consolidated balance sheets, was $10,452 and $10,131 at March 31, 2018 and December 31, 201 7 , respectively. Equity in earnings of Minda included in the condensed consolidated statements of operations was $521 and $180 , for the three months ended March 31, 2018 and 2017 , respectively.  PST Eletrônica Ltda. The Company had a 74% controlling interest in PST from December 31, 2011 through May 15, 2017 . On May 16, 2017, the Company acquired the 26% noncontrolling interest in PST for $1,500 in cash along with earn-out consideration. The Company will be required to pay additional earn-out consideration, which is not capped, based on PST’s financial performance in either 2020 or 2021. The preliminary estimated fair value of the earn-out consideration as of the acquisition date was $10,180 and was based on discounted cash flows utilizing forecasted EBITDA in 2020 and 2021. This fair value meas urement is classified within L evel 3 of the fair value hierarchy . The transaction was accounted for as an equity transaction, and therefore no gain or loss was recognized in the statement of operations or comprehensive income. The noncontrolling interest balance on the May 16, 2017 acquisition date was $14,458 , of which $31,453 and ($16,995) was related to the carrying value of the investment and foreign currency translation, respectively, and accordingly these amounts were reclassified to additional paid-in capital and accumulated other comprehensive loss, respectively. As a result of the acquisition, there was no noncontrolling interest for the period of December 31, 2017 to March 31, 2018.  The following table sets forth a summary of the change in noncontrolling interest in 2017:      Three months ended March 31, 2017  Noncontrolling interest at beginning of period $ 13,762  Net loss (30)  Foreign currency translation 757  Comprehensive income (loss) 727  Acquisition of noncontrolling interest -  Noncontrolling interest at end of period $ 14,489  PST has dividends payable to former noncontrolling interest holders of $22,579 Brazilian real ( $6,833 ) and $22,330 Brazilian real ( $6,742 ) as of March 31, 2018 and December 31, 2017, respectively. The dividends payable balance as March 31, 2018 includes $249 Brazilian real ( $75 ) in monetary correction for the quarter to date March 31, 2018 period. The dividend is payable on or before January 1, 2020, and is subject to monetary correction based on the Brazilian consumer price inflation index. The dividend payable related to PST is recorded within other long-term liabilities on the condensed consolidated balance sheet.

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue [Abstract]
Revenue by Segment and Geographical Location	 The following tables disaggregate our revenue by reportable segment and geographical location (1) for the period ended March 31, 2018 and 2017:     Three months ended March 31, 2018 Control Devices Electronics PST Consolidated  Net Sales:  North America $ 104,443 $ 19,986 $ - $ 124,429  South America - - 20,545 20,545  Europe 2,891 68,544 - 71,435  Asia Pacific 8,023 1,498 - 9,521  Total net sales $ 115,357 $ 90,028 $ 20,545 $ 225,930      Three months ended March 31, 2017 Control Devices Electronics PST Consolidated  Net Sales:  North America $ 110,521 $ 12,865 $ - $ 123,386  South America - - 21,633 21,633  Europe 1,709 50,074 - 51,783  Asia Pacific 6,643 866 - 7,509  Total net sales $ 118,873 $ 63,805 $ 21,633 $ 204,311  (1) Company sales based on geographic location are where the sale originates not where the customer is located.

Acquisition of Orlaco (Tables)

Acquisition of Orlaco (Tables)	3 Months Ended
	Mar. 31, 2018
Acquisition of Orlaco [Abstract]
Schedule of Total Consideration Transferred	The acquisition date fair value of the total consideration transferred consisted of the following:     Cash $ 79,675  Fair value of earn-out consideration and other adjustments 4,208  Total purchase price $ 83,883 
Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed	  The following table summarizes the fair value of the assets acquired and liabilities assumed at the acquisition date (including measurement period adjustments). Based upon information obtained, certain of the fair value amounts previously estimated were adjusted during the measurement period. These measurement period adjustments related to updated valuation reports and appraisals received from our external valuation specialists, as well as revisions to internal estimates. At March 31, 2018, t he purchase price and associated allocation reflect s the final valuation results and purchase price adjustments. There were no changes in estimates recorded during the quarter ended March 31, 2018 .   At January 31, 2017  Cash $ 2,165  Accounts receivable 7,929  Inventory 9,409  Prepaid and other current assets 298  Property, plant and equipment 6,668  Identifiable intangible assets 38,739  Other long-term assets 6  Total identifiable assets acquired 65,214   Accounts payable 3,020  Other current liabilities 834  Deferred tax liabilities 10,206  Warranty liability 899  Total liabilities assumed 14,959  Net identifiable assets acquired 50,255  Goodwill 33,628  Net assets acquired $ 83,883 
Pro Forma Results of Operations	The following unaudited pro forma information reflects the Company’s condensed consolidated results of operations as if the acquisition had taken place on January 1, 201 7 . The unaudited pro forma information is not necessarily indicative of the results of operations that the Company would have reported had the transaction actually occurred at the beginning of these periods, nor is it necessarily indicative of future results.      Three months ended March 31, 2017   Net sales $ 209,341  Net income attributable to Stoneridge, Inc. and subsidiaries $ 9,307 

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2018
Inventories [Abstract]
Schedule of Inventory, Current	Inventory cost includes material, labor and overhead. Inventories consisted of the following:    March 31, December 31,  2018 2017  Raw materials $ 48,311 $ 47,588  Work-in-progress 8,095 5,806  Finished goods 22,222 20,077  Total inventories, net $ 78,628 $ 73,471 

Financial Instruments and Fai26

Financial Instruments and Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Financial Instruments and Fair Value Measurements [Abstract]
Notional Amounts and Fair Values of Derivative Instruments in the Consolidated Balance	The notional amounts and fair values of derivative instruments in the condensed consolidated balance sheets were as follows:     Prepaid expenses Accrued expenses and  Notional amounts (A) and other current assets other current liabilities  March 31, December 31, March 31, December 31, March 31, December 31,  2018 2017 2018 2017 2018 2017  Derivatives designated as hedging instruments:  Cash flow hedges:  Forward currency contracts $ 13,443 $ 9,143 $ 786 $ - $ - $ 221  Derivatives not designated as hedging instruments:  Forward currency contracts $ 1,486 $ 1,486 $ - $ - $ 68 $ 48    (A) Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars. 
Amounts Recorded for the Cash Flow Hedges in Other Comprehensive Income (Loss) in Shareholders' Equity and in Net Income	 Gross amounts recorded for the cash flow hedges in other comprehensive income (loss) and in net income for the three months ended March 31 are as follows:     Gain (loss) reclassified from  Gain (loss) recorded in other other comprehensive income  comprehensive income (loss) (loss) into net income (A)  2018 2017 2018 2017  Derivatives designated as cash flow hedges:  Forward currency contracts $ 1,159 $ 516 $ (152) $ 29    
Schedule of Assets and Liabilities that are Measured at Fair Value on a Recurring Basis	The following table presents our assets and liabilities that are measured at fair value on a recurring basis and are categorized using the three levels of the fair value hierarchy based on the reliability of inputs used.     March 31, 2018 December 31, 2017  Fair values estimated using  Level 1 Level 2 Level 3  Fair value inputs inputs inputs Fair value  Financial assets carried at fair value:  Forward currency contracts $ 786 $ - $ 786 $ - $ -  Total financial assets carried at fair value $ 786 $ - $ 786 $ - $ -   Financial liabilities carried at fair value:  Forward currency contracts $ 68 $ - $ 68 $ - $ 269  Earn-out consideration 21,905 - - 21,905 20,746  Total financial liabilities carried at fair value $ 21,973 $ - $ 68 $ 21,905 $ 21,015  
Summary of the Change in Fair Value of the Level 3 Financial Liabilities Related to Contingent Consideration	The following table sets forth a summary of the change in fair value of the Company’s Level 3 financial liabilities related to earn-out consideration that are measured at fair value on a recurring basis.     Orlaco PST Total  Balance at December 31, 2017 $ 8,637 $ 12,109 $ 20,746  Change in fair value 369 535 904  Foreign currency adjustments 235 20 255  Balance at March 31, 2018 $ 9,241 $ 12,664 $ 21,905  

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2018
Debt [Abstract]
Schedule of Debt	Debt consisted of the following at March 3 1 , 201 8 and December 31, 201 7 :    March 31, December 31, Interest rates at  2018 2017 March 31, 2018 Maturity  Revolving Credit Facility  Credit Facility $ 116,000 $ 121,000 2.92% - 5.00 % September 2021   Debt  PST short-term obligations 1,647 - 11.46% March 2019  PST long-term notes 5,204 8,016 9.0% - 11.84% 2019 -2021  Other 15 28  Total debt 6,866 8,044  Less: current portion (4,160) (4,192)  Total long-term debt, net $ 2,706 $ 3,852  

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of Weighted-Average Number of Shares	Weighted-average Common Shares outstanding used in calculating basic and diluted earnings per share were as follows:     Three months ended March 31 2018 2017  Basic weighted-average Common Shares outstanding 28,249,420 27,916,652  Effect of dilutive shares 686,610 663,545  Diluted weighted-average Common Shares outstanding 28,936,030 28,580,197  

Changes in Accumulated Other 29

Changes in Accumulated Other Comprehensive Loss by Component (Tables)	3 Months Ended
	Mar. 31, 2018
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Changes in Accumulated Other Comprehensive Loss by Component	Changes in accumulated other comprehensive loss for the three months ended March 31 , 201 8 and 201 7 were as follows:                  Foreign Unrealized  currency gain (loss)  translation on derivatives Total  Balance at January 1, 2018 $ (69,417) $ (143) $ (69,560)   Other comprehensive income before reclassifications 3,894 915 4,809  Amounts reclassified from accumulated other  comprehensive loss - (120) (120)  Net other comprehensive income, net of tax 3,894 795 4,689  Balance at March 31, 2018 $ (65,523) $ 652 $ (64,871)   Balance at January 1, 2017 $ (67,895) $ (18) $ (67,913)   Other comprehensive income before reclassifications 3,063 336 3,399  Amounts reclassified from accumulated other  comprehensive loss - (19) (19)  Net other comprehensive income, net of tax 3,063 317 3,380   Balance at March 31, 2017 $ (64,832) $ 299 $ (64,533) 

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies [Abstract]
Schedule of Product Warranty and Recall Liability	 The following provides a reconciliation of changes in product warranty and recall liability:    Three months ended March 31 2018 2017  Product warranty and recall at beginning of period $ 9,978 $ 9,344  Accruals for products shipped during period 2,274 1,503  Assumed warranty liability related to Orlaco - 1,462  Aggregate changes in pre-existing liabilities due to claim developments 387 1,572  Settlements made during the period (1,772) (2,314)  Foreign currency translation (19) 97  Product warranty and recall at end of period $ 10,848 $ 11,664 

Business Realignment (Tables)

Business Realignment (Tables)	3 Months Ended
	Mar. 31, 2018
Business Realignment [Abstract]
Schedule of Restructuring and Related Costs	Business realignment charges by reportable segment were as follows:     Three months ended March 31 2018 2017  PST (A) $ 222 $ 171  Total business realignment charges $ 222 $ 171   (A) Severance costs for the three months ended March 31 , 2018 related to SG&A were $222. Severance costs for the three months ended March 31, 2017 related to COGS and SG&A were $90 and $81 , respectively.  
Schedule of Business Realignment Charges Classified by Statement of Operations	 Business realignment charges classified by statement of operations line item were as follows:      Three months ended March 31 2018 2017  Cost of goods sold $ - $ 90  Selling, general and administrative 222 81  Total business realignment charges $ 222 $ 171 

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	A summary of financial information by reportable segment is as follows:      Three months ended March 31, 2018 2017  Net Sales:  Control Devices $ 115,357 $ 118,873  Inter-segment sales 2,181 783  Control Devices net sales 117,538 119,656  Electronics (D) 90,028 63,805  Inter-segment sales 10,472 11,356  Electronics net sales 100,500 75,161  PST 20,545 21,633  Inter-segment sales 2 -  PST net sales 20,547 21,633   Eliminations (12,655) (12,139)  Total net sales $ 225,930 $ 204,311  Operating Income (Loss):  Control Devices $ 17,879 $ 19,084  Electronics (D) 7,880 5,557  PST 150 579  Unallocated Corporate (A) (9,062) (10,056)  Total operating income $ 16,847 $ 15,164  Depreciation and Amortization:  Control Devices $ 2,795 $ 2,699  Electronics (D) 2,291 1,572  PST 2,505 2,088  Unallocated Corporate 197 99  Total depreciation and amortization (B) $ 7,788 $ 6,458  Interest Expense, net:  Control Devices $ 19 $ 54  Electronics 34 38  PST 338 572  Unallocated Corporate 963 746  Total interest expense, net $ 1,354 $ 1,410  Capital Expenditures:  Control Devices $ 5,746 $ 3,447  Electronics (D) 2,773 2,351  PST 1,259 884  Unallocated Corporate (C) 727 583  Total capital expenditures $ 10,505 $ 7,265         March 31, December 31,  2018 2017  Total Assets:  Control Devices $ 174,608 $ 164,632  Electronics 276,252 252,324  PST 99,102 100,382  Corporate (C) 366,349 377,657  Eliminations (336,109) (335,958)  Total assets $ 580,202 $ 559,037    (A) Unallocated Corporate expenses include, among other items, finance, legal, human resources and information technology costs and share-based compensation. (B) These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets. (C) Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, equity investments and investments in subsidiaries.   The following tables present net sales and long-term assets for each of the geographic areas in which the Company operates:     Three months ended March 31 2018 2017  Net Sales:  North America $ 124,429 $ 123,386  South America 20,545 21,633  Europe and Other (D) 80,956 59,292  Total net sales $ 225,930 $ 204,311      March 31, December 31,  2018 2017   Long-term Assets:  North America $ 93,615 $ 89,997  South America 57,430 58,989  Europe and Other 110,464 106,682  Total long-term assets $ 261,509 $ 255,668               (D) The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following tables present net sales and long-term assets for each of the geographic areas in which the Company operates:     Three months ended March 31 2018 2017  Net Sales:  North America $ 124,429 $ 123,386  South America 20,545 21,633  Europe and Other (D) 80,956 59,292  Total net sales $ 225,930 $ 204,311      March 31, December 31,  2018 2017   Long-term Assets:  North America $ 93,615 $ 89,997  South America 57,430 58,989  Europe and Other 110,464 106,682  Total long-term assets $ 261,509 $ 255,668               (D) The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2018
Investments [Abstract]
Schedule of Noncontrolling Interest	   Three months ended March 31, 2017  Noncontrolling interest at beginning of period $ 13,762  Net loss (30)  Foreign currency translation 757  Comprehensive income (loss) 727  Acquisition of noncontrolling interest -  Noncontrolling interest at end of period $ 14,489  

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details) - PST Eletronica Ltda [Member]	65 Months Ended
	May 15, 2017	May 16, 2017
Schedule of Equity Method Investments [Line Items]
Percentage ownership in consolidated subsidiary	74.00%
Percentage of additional noncontrolling interest acquired		26.00%

Revenue (Narrative) (Details)

Revenue (Narrative) (Details) $ in Thousands	Mar. 31, 2018USD ($)
Revenue [Abstract]
Contract assets	$ 0
Contract liabilities	0
Capitalized contract acquisition costs	$ 0

Revenue (Revenue by Segment and

Revenue (Revenue by Segment and Geographical Location) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Total net sales	$ 225,930	$ 204,311
North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	124,429	123,386
South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	20,545	21,633
Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	71,435	51,783
Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	9,521	7,509
Control Devices [Member]
Disaggregation of Revenue [Line Items]
Total net sales	115,357	118,873
Control Devices [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	104,443	110,521
Control Devices [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	2,891	1,709
Control Devices [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	8,023	6,643
Electronics [Member]
Disaggregation of Revenue [Line Items]
Total net sales	90,028	63,805
Electronics [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	19,986	12,865
Electronics [Member] | Europe [Member]
Disaggregation of Revenue [Line Items]
Total net sales	68,544	50,074
Electronics [Member] | Asia Pacific [Member]
Disaggregation of Revenue [Line Items]
Total net sales	1,498	866
PST [Member]
Disaggregation of Revenue [Line Items]
Total net sales	20,545	21,633
PST [Member] | South America [Member]
Disaggregation of Revenue [Line Items]
Total net sales	$ 20,545	$ 21,633

Acquisition of Orlaco (Narrativ

Acquisition of Orlaco (Narrative) (Details) € in Thousands	1 Months Ended		3 Months Ended
	Jan. 31, 2017EUR (€)	Jan. 31, 2017USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Jan. 31, 2017USD ($)
Business Acquisition [Line Items]
Acquisition related costs			$ 0
Orlaco [Member]
Business Acquisition [Line Items]
Acquisition agreement date			Jan. 31, 2017
Total cash paid at closing	€ 74,939	$ 79,675,000
Cash paid to seller at closing	67,439				$ 71,701,000
Aquisition payment held in escrow to secure payment for working capital and other adustments	7,500				7,974,000
Intangible assets aquired					38,739,000
Acquisition related costs				$ 12,149,000
Post-acquisition sales				11,100,000
Post-acquisition net income (loss)				600,000
Expense related to fair value adjustment for earn-out consideration			$ 369,000
Orlaco [Member] | Earnout Consideration [Member]
Business Acquisition [Line Items]
Maximum additional earnout consideration | €	€ 7,500
Orlaco [Member] | Fair Value Adjustment to Inventory [Member]
Business Acquisition [Line Items]
Expense related to inventory fair value step up				$ 979,000
Customer Lists [Member] | Orlaco [Member]
Business Acquisition [Line Items]
Intangible assets aquired					27,518,000
Intangible asset useful life	15 years	15 years
Trademarks [Member] | Orlaco [Member]
Business Acquisition [Line Items]
Intangible assets aquired					5,142,000
Intangible asset useful life	20 years	20 years
Technology [Member] | Orlaco [Member]
Business Acquisition [Line Items]
Intangible assets aquired					$ 6,079,000
Intangible asset useful life	7 years	7 years

Acquisition of Orlaco (Schedule

Acquisition of Orlaco (Schedule of Total Consideration Transferred) (Details) - 1 months ended Jan. 31, 2017 - Orlaco [Member] € in Thousands, $ in Thousands	EUR (€)	USD ($)
Business Acquisition [Line Items]
Cash paid at closing	€ 74,939	$ 79,675
Fair value of earn-out liability and other adjustments		4,208
Total fair value		$ 83,883

Acquisition of Orlaco (Schedu39

Acquisition of Orlaco (Schedule of Estimated Fair Values of Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Jan. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 39,439	$ 38,419
Orlaco [Member]
Business Acquisition [Line Items]
Cash			$ 2,165
Accounts receivable			7,929
Inventory			9,409
Prepaids and other current assets			298
Property, plant and equipment			6,668
Identifiable intangible assets			38,739
Other long-term assets			6
Total identifiable assets acquired			65,214
Accounts payable			3,020
Other current liabilities			834
Deferred tax liabilities			10,206
Warranty liabilitity			899
Total liabilities assumed			14,959
Net identifiable assets acquired			50,255
Goodwill			33,628
Net assets acquired			$ 83,883

Acquisition of Orlaco (Pro Form

Acquisition of Orlaco (Pro Forma Results of Operations) (Details) - Orlaco [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Business Acquisition [Line Items]
Net sales	$ 209,341
Net income attributable to Stoneridge, Inc. and subsidiaries	$ 9,307

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventories [Abstract]
Inventory amount, FIFO	$ 59,021	$ 54,837
Inventory amount, weighted average cost	$ 19,607	$ 18,634

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Inventories [Abstract]
Raw materials	$ 48,311	$ 47,588
Work-in-progress	8,095	5,806
Finished goods	22,222	20,077
Total inventories, net	$ 78,628	$ 73,471

Financial Instruments and Fai43

Financial Instruments and Fair Value Measurements (Narrative) (Details) € in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	Mar. 31, 2018EUR (€)	Mar. 31, 2018USD ($)		Dec. 31, 2017USD ($)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other Liabilities, Fair Value Disclosure				$ 21,905		$ 20,746
Transfers in or out of Level 3	$ 0
Euro-Denominated Foreign Currency Forward Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Gain (loss) on derivative instruments held for trading purposes, net	$ (20)	$ (19)
Cash Flow Hedging [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
(Gain) loss from cash flow hedge derivatives to be reclassified				(786)
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts, Swedish Krona Functional Currency [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				5,800		0
Cash Flow Hedging [Member] | U.S. Dollar Denominated Foreign Currency Forward Contracts Euro Functional Currency [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				1,600		0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Forward Currency Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				13,443	[1]	9,143
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Mexican Peso-Denominated Foreign Currency Forward Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				6,043		9,143
Not Designated as Hedging Instrument [Member] | Forward Currency Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				1,486	[1]	$ 1,486
Not Designated as Hedging Instrument [Member] | Euro-Denominated Foreign Currency Forward Contracts [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Notional amounts				$ 1,486
Orlaco [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other Liabilities, Fair Value Disclosure | €			€ 7,500
[1]	Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars.

Financial Instruments and Fai44

Financial Instruments and Fair Value Measurements (Schedule of Derivative Instruments in Statement of Financial Position, Fair Value) (Details) - Forward Currency Contracts [Member] - USD ($) $ in Thousands	Mar. 31, 2018		Dec. 31, 2017
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional amounts	$ 1,486	[1]	$ 1,486
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Notional amounts	13,443	[1]	9,143
Cash flow hedges , other derivative assets	786
Other Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Fair value of other derivatives	(68)		(48)
Other Liabilities [Member] | Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Cash flow hedges , other derivatives	$ 0		$ (221)
[1]	Notional amounts represent the gross contract of the derivatives outstanding in U.S. dollars.

Financial Instruments and Fai45

Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) - Designated as Hedging Instrument [Member] - Forward Currency Contracts [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Derivatives designated as cash flow hedges:
Gain (loss) recorded in other comprehensive income	$ 1,159	$ 516
Gain (loss) reclassified from other comprehensive income into net income	$ (152)	$ 29

Financial Instruments and Fai46

Financial Instruments and Fair Value Measurements (Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets carried at fair value:
Forward currency asset contracts	$ 786
Total financial assets carried at fair value	786
Financial liabilities carried at fair value:
Forward currency liabilities contracts	68	$ 269
Earn-out consideration	21,905	20,746
Total financial liabilities carried at fair value	21,973	$ 21,015
Fair Value, Inputs, Level 2 [Member]
Financial assets carried at fair value:
Forward currency asset contracts	786
Total financial assets carried at fair value	786
Financial liabilities carried at fair value:
Forward currency liabilities contracts	68
Total financial liabilities carried at fair value	68
Fair Value, Inputs, Level 3 [Member]
Financial liabilities carried at fair value:
Earn-out consideration	21,905
Total financial liabilities carried at fair value	$ 21,905

Financial Instruments and Fai47

Financial Instruments and Fair Value Measuements (Summary of the Change in Fair Value of the Level 3 Financial Liabilities Related to Contingent Consideration) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	$ 20,746
Change in fair value	904
Foreign currency adjustments	255
Financial liability, Ending balance	21,905
Orlaco [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	8,637
Change in fair value	369
Foreign currency adjustments	235
Financial liability, Ending balance	9,241
PST Eletronica Ltda [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Financial liability, Beginning balance	12,109
Change in fair value	535
Foreign currency adjustments	20
Financial liability, Ending balance	$ 12,664

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1,404	$ 2,339

Debt (Narrative) (Details)

Debt (Narrative) (Details) kr in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2018SEK (kr)	Mar. 31, 2018USD ($)	Dec. 31, 2017SEK (kr)	Dec. 31, 2017USD ($)	Jan. 30, 2017USD ($)	Aug. 12, 2016USD ($)	Mar. 25, 2015	Sep. 12, 2014USD ($)	Nov. 02, 2007USD ($)
Debt Instrument [Line Items]
Borrowings outstanding			$ 116,000		$ 121,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate								9.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Capitalized deferred financing costs							$ 339
Line of credit facility, maximum borrowing capacity									$ 300,000	$ 100,000
Increase in maximum borrowing capacity of credit facility									$ 80,000
Borrowings outstanding			$ 116,000		121,000
Line of credit expiration date	Sep. 12, 2019
Maximum leverage ratio		300.00%	300.00%
Minimum interest coverage ratio		350.00%	350.00%
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Credit facility, commitment fee percentage	0.35%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Credit facility, commitment fee percentage	0.20%
Asset-Based Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity										$ 100,000
Letter of Credit [Member]
Debt Instrument [Line Items]
Outstanding letters of credit			$ 2,008
Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility covenant compliance	The Company was in compliance with all Credit Facility covenants at March 31, 2018 and December 31, 2017
Amendment Three [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facilty amendement date	Aug. 12, 2016
Length of the amended extension to the expiration date on debt	2 years
Line of credit expiration date	Sep. 12, 2021
Amendment Four [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Capitalized deferred financing costs						$ 61
PST Debt [Member]
Debt Instrument [Line Items]
Notes covenant compliance	PST was in compliance with all debt covenants at March 31, 2018 and December 31, 2016.
PST Eletronica Ltda [Member] | Term Loan [Member]
Debt Instrument [Line Items]
April 2018 through March 2019			4,145
April 2019 through December 2019			1,552
2,020			602
2,021			$ 552
PST Eletronica Ltda [Member] | PST Long-Term Notes [Member]
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate		10.30%	10.30%
PST Eletronica Ltda [Member] | PST Short-Term Notes [Member]
Debt Instrument [Line Items]
Short-term debt, weighted average interest rate		11.50%	11.50%
Borrowing Sub-Limit for the Company's Foreign Subsidiaries [Member] | Amendment Three [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Sub-limit for foreign subsidiary borrowings			$ 80,000
Increase in sub-limit for foreign subsidiary borrowings			30,000
Permitted Loans and Investments in Foreign Subsidiaries [Member] | Amendment Three [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Increase in permitted loans and investments in foregin subsidiaries.	$ 5,000
Amount of permitted loans and investments in foregin subsidiaries			30,000
Electronics [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		kr 20,000	2,398	kr 20,000	2,439
Borrowings outstanding			$ 0		$ 0

Debt (Schedule of Debt) (Detail

Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Revolving credit facility	$ 116,000	$ 121,000
Debt:
Total debt	6,866	8,044
Less: current portion	(4,160)	(4,192)
Total long-term debt, net	2,706	3,852
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 116,000	121,000
Debt:
Debt, maturity	September 2,021
Maximum [Member] | Revolving Credit Facility [Member]
Debt:
Interest rate	5.00%
Minimum [Member] | Revolving Credit Facility [Member]
Debt:
Interest rate	2.92%
PST Short-Term Notes [Member]
Debt Instrument [Line Items]
Short-term debt [Member]	$ 1,647
Debt:
Debt, maturity	March 2,019
Interest rate	11.46%
PST Long-Term Notes [Member]
Debt:
Total long-term debt, net	$ 5,204	8,016
Debt maturity period range start	2,019
Debt maturity period range end	2,021
PST Long-Term Notes [Member] | Maximum [Member]
Debt:
Interest rate	11.84%
PST Long-Term Notes [Member] | Minimum [Member]
Debt:
Interest rate	9.00%
Other [Member]
Debt:
Total debt	$ 15	$ 28

Earnings Per Share (Narative) (

Earnings Per Share (Narative) (Details) - shares	Mar. 31, 2018	Mar. 31, 2017
Performance Based Restricted Common Shares [Member]
Performance based restricted common shares outstanding	0	0
Performance Based Right to Receive Common Shares [Member]
Common shares, non-vested	622,960	750,720

Earnings Per Share (Weighted Av

Earnings Per Share (Weighted Average Shares Oustanding Used in Calculating Basic and Diluted Net Income Per Share) (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Basic weighted-average common shares outstanding	28,249,420	27,916,652
Effect of dilutive shares	686,610	663,545
Diluted weighted-average common shares outstanding	28,936,030	28,580,197

Changes in Accumulated Other 53

Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Changes in Accumulated Other Comprehensive Loss by Component [Abstract]
Foreign currency translation, Beginning balance		$ (69,417)	$ (67,895)
Foreign currency translation, Other comprehensive income (loss) before reclassifications		3,894	3,063
Foreign currency translation, Net other comprehensive income (loss), net of tax		3,894	3,063
Foreign currency translation, Ending balance		(65,523)	(64,832)
Unrealized gain (loss) on hedging activities, Beginning balance		(143)	(18)
Unrealized gain (loss) on hedging activities, Other comprehensive income (loss) before reclassifications		915	336
Unrealized gain (loss) on hedging activities, Amounts reclassified from accumulated other comprehensive loss		(120)	(19)
Unrealized gain (loss) on hedging activities, Net other comprehensive income (loss), net of tax	[1]	795	317
Unrealized gain (loss) on hedging activities, Ending balance		652	299
Total, Other comprehensive income (loss) before reclassifications		4,809	3,399
Total, Amounts reclassified from accumulated other comprehensive loss		(120)	(19)
Net other comprehensive income (loss), net of tax		4,689	3,380
Accumulated other comprehensive income (loss), net of tax, total		$ (64,871)	$ (64,533)	$ (69,560)	$ (67,913)
[1]	Net of tax expense of $212 and $170 for the three months ended March 31, 2018 and 2017, respectively.

Commitments and Contingencies54

Commitments and Contingencies (Narrative) (Details) R$ in Thousands, $ in Thousands, item in Millions	1 Months Ended	3 Months Ended		24 Months Ended
	Feb. 28, 2018USD ($)	Mar. 31, 2018USD ($)itemplaintiff	Mar. 31, 2017USD ($)	Dec. 31, 2010	Mar. 31, 2018BRL (R$)	Mar. 31, 2018USD ($)	Dec. 31, 2017BRL (R$)	Dec. 31, 2017USD ($)
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability						$ 132		$ 265
Number of vehicles the plaintiff states are effected | item		1
Loss recoveries and insurance gain contingencies								1,644
Cash proceeds related to damaged inventory and incremental costs		$ 241	$ 500
Cash proceeds within cash flows from investing activities		$ 1,403
Product warranty and recall accrual						3,347		3,112
Royal v. Stoneridge, Inc. [Member]
Short-term Debt [Line Items]
Number of people the plaintiff states have damages | plaintiff		3
Litigation liability						93		525
Royal v. Stoneridge, Inc, Attorney's Fees [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss						375
Legal settlement payment	$ 375
Royal v. Stoneridge, Inc, Awarded Incentive Payments [Member]
Short-term Debt [Line Items]
Legal settlement payment	$ 15
Accrued Expenses and Other Current Liabilities [Member]
Short-term Debt [Line Items]
Environmental remediation accrued undiscounted liability						132		253
Letter of Credit [Member]
Short-term Debt [Line Items]
Line of credit						1,489
PST Eletronica Ltda [Member]
Short-term Debt [Line Items]
Litigation liability						0		0
Percentage of state value added tax				25.00%
PST Eletronica Ltda [Member] | Civil, labor and other tax contingencies [Member]
Short-term Debt [Line Items]
Loss contingency, estimate of possible loss					R$ 38100	$ 11,500	R$ 33800	$ 10,200
Maximum [Member] | Royal v. Stoneridge, Inc. [Member]
Short-term Debt [Line Items]
Maximum loss per plaintiff		$ 5

Commitments and Contingencies55

Commitments and Contingencies (Reconciliation of Changes in Product Warranty and Recall Liability) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Commitments and Contingencies [Abstract]
Product warranty and recall at beginning of period	$ 9,978	$ 9,344
Accruals for products shipped during period	2,274	1,503
Acquired warranty liability related to acquisition		1,462
Aggregate changes in pre-existing liabilities due to claim developments	387	1,572
Settlements made during the period	(1,772)	(2,314)
Foreign currency translation	(19)	97
Product warranty and recall at end of period	$ 10,848	$ 11,664

Business Realignment (Schedule

Business Realignment (Schedule of Restructuring and Related Costs) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		$ 222	$ 171
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges			90
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		222	81
PST Segment [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	[1]	222	171
PST Segment [Member] | Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs			90
PST Segment [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs		$ 222	$ 81
[1]	Severance costs for the three months ended March 31, 2018 related to SG&A were $222. Severance costs for the three months ended March 31, 2017 related to COGS and SG&A were $90 and $81, respectively.

Business Realignment (Schedul57

Business Realignment (Schedule of Business Realignment Charges Classified by Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	$ 222	$ 171
Cost of Goods Sold [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges		90
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total business realignment charges	$ 222	$ 81

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Taxes [Abstract]
Provision for income taxes	$ 3,233	$ 4,571
Effective income tax rate	19.50%	33.30%

Segment Reporting (Narrative) (

Segment Reporting (Narrative) (Details)	3 Months Ended
	Mar. 31, 2018segment
Segment Reporting [Abstract]
Number of reportable segments	3

Segment Reporting (Schedule of

Segment Reporting (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Net Sales:
Total net sales		$ 225,930	$ 204,311
Operating Income (Loss)
Total operating income (loss)		16,847	15,164
Total income before income taxes		16,613	13,744
Depreciation and Amortization:
Total depreciation and amortization	[1]	7,788	6,458
Interest Expense, net:
Interest expense, net		1,354	1,410
Capital Expenditures:
Capital expenditures		10,505	7,265
Total Assets:
Total assets		580,202		$ 559,037
Total long-term assets		261,509		255,668
Operating Segments [Member]
Operating Income (Loss)
Total operating income (loss)		16,847	15,164
Intersegment Eliminations [Member]
Net Sales:
Total net sales		(12,655)	(12,139)
Total Assets:
Total assets		(336,109)		(335,958)
Electronics [Member]
Net Sales:
Total net sales		100,500	75,161
Electronics [Member] | Operating Segments [Member]
Net Sales:
Total net sales	[2]	90,028	63,805
Operating Income (Loss)
Total operating income (loss)	[2]	7,880	5,557
Depreciation and Amortization:
Total depreciation and amortization	[2]	2,291	1,572
Interest Expense, net:
Interest expense, net		34	38
Capital Expenditures:
Capital expenditures	[2]	2,773	2,351
Total Assets:
Total assets		276,252		252,324
Electronics [Member] | Inter-Segment [Member]
Net Sales:
Total net sales		10,472	11,356
Control Devices [Member]
Net Sales:
Total net sales		117,538	119,656
Control Devices [Member] | Operating Segments [Member]
Net Sales:
Total net sales		115,357	118,873
Operating Income (Loss)
Total operating income (loss)		17,879	19,084
Depreciation and Amortization:
Total depreciation and amortization		2,795	2,699
Interest Expense, net:
Interest expense, net		19	54
Capital Expenditures:
Capital expenditures		5,746	3,447
Total Assets:
Total assets		174,608		164,632
Control Devices [Member] | Inter-Segment [Member]
Net Sales:
Total net sales		2,181	783
Corporate [Member]
Interest Expense, net:
Interest expense, net		963	746
Capital Expenditures:
Capital expenditures	[3]	727	583
Total Assets:
Total assets	[3]	366,349		377,657
Corporate [Member] | Operating Segments [Member]
Operating Income (Loss)
Total operating income (loss)	[4]	(9,062)	(10,056)
Depreciation and Amortization:
Total depreciation and amortization		197	99
PST [Member]
Net Sales:
Total net sales		20,547	21,633
PST [Member] | Operating Segments [Member]
Net Sales:
Total net sales		20,545	21,633
Operating Income (Loss)
Total operating income (loss)		150	579
Depreciation and Amortization:
Total depreciation and amortization		2,505	2,088
Interest Expense, net:
Interest expense, net		338	572
Capital Expenditures:
Capital expenditures		1,259	884
Total Assets:
Total assets		99,102		100,382
PST [Member] | Inter-Segment [Member]
Net Sales:
Total net sales		2
North America [Member]
Net Sales:
Total net sales		124,429	123,386
Total Assets:
Total long-term assets		93,615		89,997
South America [Member]
Net Sales:
Total net sales		20,545	21,633
Total Assets:
Total long-term assets		57,430		58,989
Europe and Other [Member]
Net Sales:
Total net sales	[2]	80,956	$ 59,292
Total Assets:
Total long-term assets		$ 110,464		$ 106,682
[1]	These amounts represent depreciation and amortization on property, plant and equipment and certain intangible assets.
[2]	The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4
[3]	Assets located at Corporate consist primarily of cash, intercompany loan receivables, fixed assets for the corporate headquarter building, equity investments and investments in subsidiaries.
[4]	Unallocated Corporate expenses include, among other items, finance, legal, human resources and information technology costs and share-based compensation.

Segment Reporting (Schedule o61

Segment Reporting (Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Net Sales:
Total net sales		$ 225,930	$ 204,311
Long-term Assets:
Total long-term assets		261,509		$ 255,668
North America [Member]
Net Sales:
Total net sales		124,429	123,386
Long-term Assets:
Total long-term assets		93,615		89,997
South America [Member]
Net Sales:
Total net sales		20,545	21,633
Long-term Assets:
Total long-term assets		57,430		58,989
Europe and Other [Member]
Net Sales:
Total net sales	[1]	80,956	$ 59,292
Long-term Assets:
Total long-term assets		$ 110,464		$ 106,682
[1]	The amount for 2017 includes two months of net sales from the acquisition date of January 31, 2017 related to Orlaco which is disclosed in Note 4

Investments (Narrative) (Detail

Investments (Narrative) (Details) R$ in Thousands, $ in Thousands	May 16, 2017USD ($)	Mar. 31, 2018USD ($)	Mar. 31, 2017USD ($)	May 15, 2017	Mar. 31, 2018BRL (R$)	Mar. 31, 2018USD ($)	Dec. 31, 2017BRL (R$)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Schedule of Equity Method Investments [Line Items]
Income (loss) from equity method investments		$ 521	$ 180
PST Eletronica Ltda [Member]
Schedule of Equity Method Investments [Line Items]
Percentage ownership in consolidated subsidiary				74.00%
Percentage of additional noncontrolling interest acquired	26.00%
Noncontrolling interest	$ 14,458		14,489						$ 13,762
Dividends payable, price index adjustment					R$ 249	$ 75
PST Eletronica Ltda [Member] | Noncontrolling Interest [Member]
Schedule of Equity Method Investments [Line Items]
Cash payment at closing	1,500
Fair value of earn-out liability	10,180
Carrying value of investment	31,453
Carrying value of foreign currency translation	$ (16,995)
Dividends payable					R$ 22579	$ 6,833	R$ 22330	$ 6,742
Minda Stoneridge Instruments Ltd [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					49.00%	49.00%
Equity method investments						$ 10,452		$ 10,131
Income (loss) from equity method investments		$ 521	$ 180

Investments (Schedule of Noncon

Investments (Schedule of Noncontrolling Interest) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Net loss attributable to noncontrolling interest	$ (30)
PST Eletronica Ltda [Member]
Noncontrolling interest at beginning of period	13,762
Net loss attributable to noncontrolling interest	(30)
Foreign currency translation	757
Comprehensive income (loss) related to noncontrolling interest	727
Noncontrolling interest at end of period	$ 14,489