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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Summary of Significant Accounting Policies [Abstract] |
Schedule of Accounts Receivable and Concentration of Credit Risk | The Company’s largest customers are Ford Motor Company and General Motors Company, primarily related to the Control Devices and Electronics reportable segments and accounted for the following percentages of consolidated net sales for the years ended December 31, 2017, 2016 and 2015: ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | 2017 |  | 2016 |  | 2015
﻿Ford Motor Company |  | 14 | % |  | 17 | % |  | 14 | %
﻿General Motors Company |  | 7 | % |  | 7 | % |  | 5 | %
﻿
Schedule of Inventory, Current | Inventories consist of the following:
﻿ |  |  |  |  |
﻿ |  |  | December 31, |  | December 31,
﻿ |  |  | 2017 |  | 2016
﻿Raw materials |  | $ | 47,588 | $ | 35,665
﻿Work-in-progress |  |  | 5,806 |  | 7,483
﻿Finished goods |  |  | 20,077 |  | 16,969
﻿Total inventories, net |  | $ | 73,471 | $ | 60,117
﻿
Statements of Operations for Discontinued Operations | ﻿ The following tables display summarized activity in our consolidated statements of operations for discontinued operations during the year ended December 31, 2015 related to the Wiring business. There was no impact from discontinued operations for the years ended December 31, 2017 or 2016.
﻿ |  |  |  |  |
﻿ |  |  |  |  |
﻿ |  |  |  |  |
﻿Years ended December 31 |  |  |  |  | 2015
﻿Loss on disposal |  |  |  | $ | (241)
﻿Income tax benefit on loss on disposal |  |  |  |  | 31
﻿Loss on disposal, net of tax |  |  |  |  | (210)
﻿ |  |  |  |  |
﻿Loss from discontinued operations |  |  |  | $ | (210)
﻿
Property, Plant and Equipment | Property, plant and equipment are recorded at cost and consist of the following: ﻿
﻿ |  |  |  |  |
﻿ - |  |  | 2017 |  | 2016
﻿Land and land improvements |  | $ | 4,863 | $ | 3,376
﻿Buildings and improvements |  |  | 37,581 |  | 32,271
﻿Machinery and equipment |  |  | 192,107 |  | 180,944
﻿Office furniture and fixtures |  |  | 10,070 |  | 6,813
﻿Tooling |  |  | 75,038 |  | 67,261
﻿Information technology |  |  | 27,466 |  | 23,632
﻿Vehicles |  |  | 881 |  | 398
﻿Leasehold improvements |  |  | 2,841 |  | 2,583
﻿Construction in progress |  |  | 24,312 |  | 16,854
﻿ Total property, plant, and equipment |  |  | 375,159 |  | 334,132
﻿Less: accumulated depreciation |  |  | (264,757) |  | (242,632)
﻿ Property, plant and equipment, net |  | $ | 110,402 | $ | 91,500
﻿
Schedule of Property, Plant and Equipment Estimated Useful Lives | Depreciable lives within each property classification are as follows: ﻿ ﻿
﻿ |  |  |
﻿Buildings and improvements |  |  | 10-40 years
﻿Machinery and equipment |  |  | 3-10 years
﻿Office furniture and fixtures |  |  | 3-10 years
﻿Tooling |  |  | 2-5 years
﻿Information technology |  |  | 3-7 years
﻿Vehicles |  |  | 3-5 years
﻿Leasehold improvements | shorter of lease term or 3-10 years
﻿
Schedule of Business Combination 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 Purchase Price Allocation | ﻿ ﻿
﻿ |  |
﻿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
﻿
Business Acquisition, Pro Forma Information | ﻿ ﻿
﻿ |  |  |  |  |
﻿ |  |  |
﻿ |  |  |
﻿Year ended December 31 |  |  | 2017 |  | 2016
﻿ |  |  |  |  |
﻿Net sales |  | $ | 829,474 | $ | 752,864
﻿Net income attributable to Stoneridge, Inc. and subsidiaries | $ | 45,283 | $ | 82,178
﻿
Schedule of Goodwill | Goodwill and changes in the carrying amount of goodwill by segment for the years ended December 31, 2017 and 2016 were as follows: ﻿
﻿ |  |
﻿ |  | Electronics
﻿Balance at January 1, 2017 | $ | 931
﻿Acquisition of business |  | 33,628
﻿Currency translation |  | 3,860
﻿Balance at December 31, 2017 | $ | 38,419
﻿ ﻿
﻿ |  |
﻿ |  |
﻿ |  | Electronics
﻿Balance at January 1, 2016 | $ | 981
﻿Currency translation |  | (50)
﻿Balance at December 31, 2016 | $ | 931
﻿
Schedule of Acquired Finite-Lived Intangible Assets by Major Class | ﻿ Other Intangible Assets ﻿ Other intangible assets, net at December 31, 2017 and 2016 consisted of the following: ﻿ ﻿
﻿ |  |  |  |  |  |
﻿ |  | Acquisition |  | Accumulated |  |
﻿As of December 31, 2017 |  | cost |  | amortization |  | Net
﻿Customer lists | $ | 57,672 | $ | (12,695) | $ | 44,977
﻿Tradenames |  | 23,546 |  | (5,646) |  | 17,900
﻿Technology |  | 17,443 |  | (5,077) |  | 12,366
﻿Other |  | 41 |  | (41) |  | -
﻿Total | $ | 98,702 | $ | (23,459) | $ | 75,243
﻿ ﻿
﻿ |  |  |  |  |  |
﻿ |  | Acquisition |  | Accumulated |  |
﻿As of December 31, 2016 |  | cost |  | amortization |  | Net
﻿Customer lists | $ | 27,476 | $ | (9,138) | $ | 18,338
﻿Tradenames |  | 18,116 |  | (4,558) |  | 13,558
﻿Technology |  | 10,862 |  | (3,498) |  | 7,364
﻿Other |  | 41 |  | (41) |  | -
﻿Total | $ | 56,495 | $ | (17,235) | $ | 39,260
﻿
Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consist of the following: ﻿ ﻿
﻿ |  |  |  |
﻿As of December 31 |  | 2017 |  | 2016
﻿Compensation related liabilities | $ | 22,429 | $ | 16,329
﻿Product warranty and recall obligations |  | 6,867 |  | 6,727
﻿Accrued income taxes |  | 6,897 |  | 1,930
﻿Other (A) |  | 16,353 |  | 16,503
﻿Total accrued expenses and other current liabilities | $ | 52,546 | $ | 41,489
﻿ (A)“Other” is comprised of miscellaneous accruals, none of which individually contributed a significant portion of the total. ﻿
Schedule of Product Warranty Liability | The following provides a reconciliation of changes in the product warranty and recall reserve: ﻿
﻿ |  |  |  |
﻿Years ended December 31 |  | 2017 |  | 2016
﻿Product warranty and recall at beginning of period | $ | 9,344 | $ | 6,419
﻿Accruals for products shipped during period |  | 4,933 |  | 4,978
﻿Assumed warranty liability related to Orlaco |  | 899 |  | -
﻿Aggregate changes in pre-existing liabilities due to claim developments |  | 4,899 |  | (116)
﻿Settlements made during the period |  | (10,407) |  | (1,967)
﻿Foreign currency translation |  | 311 |  | 30
﻿Product warranty and recall at end of period | $ | 9,979 | $ | 9,344
﻿
Schedule of Weighted-Average Number of Shares | ﻿ ﻿ Actual weighted-average Common Shares outstanding used in calculating basic and diluted net income per share were as follows:
﻿ |  |  |  |  |  |
﻿ |  |  |  |
﻿Years ended December 31 |  | 2017 |  | 2016 |  | 2015
﻿Basic weighted-average Common Shares outstanding |  | 28,082,114 |  | 27,763,990 |  | 27,337,954
﻿Effect of dilutive shares |  | 689,531 |  | 544,932 |  | 621,208
﻿Diluted weighted-average Common Shares outstanding |  | 28,771,645 |  | 28,308,922 |  | 27,959,162
﻿ |  |  |  |  |  |
﻿
Changes in Accumulated Other Comprehensive Loss by Component | Changes in accumulated other comprehensive loss for the years ended December 31, 2017 and 2016 were as follows:
﻿ |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |
﻿ |  | Foreign |  | Unrealized |  | Benefit |  |
﻿ |  | currency |  | gain (loss) |  | plan |  |
﻿ |  | translation |  | on derivatives |  | adjustment |  | Total
﻿Balance at January 1, 2017 | $ | (67,895) | $ | (18) | $ | - | $ | (67,913)
﻿ |  |  |  |  |  |  |  |
﻿ Other comprehensive income before reclassifications | 15,473 |  | 509 |  | - |  | 15,982
﻿Amounts reclassified from accumulated other |  |  |  |  |  |  |  |
﻿comprehensive loss |  | - |  | (634) |  | - |  | (634)
﻿Net other comprehensive income (loss), net of tax |  | 15,473 |  | (125) |  | - |  | 15,348
﻿Reclassification of foreign currency translation associated with noncontrolling interest acquired |  | (16,995) |  | - |  | - |  | (16,995)
﻿Balance at December 31, 2017 | $ | (69,417) | $ | (143) | $ | - | $ | (69,560)
﻿ |  |  |  |  |  |  |  |
﻿Balance at January 1, 2016 | $ | (70,296) | $ | 390 | $ | 84 | $ | (69,822)
﻿ |  |  |  |  |  |  |  |
﻿ Other comprehensive income (loss) before reclassifications | 2,401 |  | (572) |  | - |  | 1,829
﻿Amounts reclassified from accumulated other |  |  |  |  |  |  |  |
﻿comprehensive loss |  | - |  | 164 |  | (84) |  | 80
﻿Net other comprehensive income (loss), net of tax |  | 2,401 |  | (408) |  | (84) |  | 1,909
﻿ |  |  |  |  |  |  |  |
﻿Balance at December 31, 2016 | $ | (67,895) | $ | (18) | $ | - | $ | (67,913)
﻿

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