Investments	3 Months Ended
Mar. 31, 2019
Investments [Abstract]
Investments	(15) Investments Minda Stoneridge Instruments Ltd. The Company has a 49% equity interest in Minda Stoneridge Instruments Ltd. (“MSIL”), a company based in India that manufactures electronics, instrumentation equipment and sensors primarily for the motorcycle, commercial vehicle and automotive markets. The investment is accounted for under the equity method of accounting. The Company’s investment in MSIL, recorded as a component of investments and other long-term assets, net on the condensed consolidated balance sheets, was $11,738 and $11,288 at March 31, 2019 and December 31, 2018, respectively. Equity in earnings of MSIL included in the condensed consolidated statements of operations was $364 and $521, for the three months ended March 31, 2019 and 2018, 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 remaining 26% noncontrolling interest in PST. As part of the acquisition agreement, 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. See Note 5 for the fair value and foreign currency adjustments of the earn-out consideration for the current and prior periods. PST has dividends payable to former noncontrolling interest holders of R$23,465 Brazilian real ($5,980) and R$23,204 Brazilian real ($5,980) as of March 31, 2019 and December 31, 2018, respectively. The dividends payable balance includes R$261 Brazilian real ($68) and $249 Brazilian real ($75) in monetary correction for the three months ended March 31, 2019 and 2018, respectively. The dividend is payable on or before January 1, 2020, and is subject to monetary correction based on the Brazilian National Extended Consumer Price inflation index (“IPCA”). The dividend payable related to PST is recorded within other current liabilities on the condensed consolidated balance sheet. Other Investments In December 2018, the Company entered into an agreement to make a $10,000 investment in a fund managed by Autotech Ventures (“Autotech”), a venture capital firm focused on ground transportation technology which is accounted for in accordance with ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10)”. This investment does not have a readily determinable fair value and is measured at costs, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer. The Company’s $10,000 investment in the Autotech fund will be contributed over the expected ten-year life of the fund. The Company contributed $400 to the Autotech fund and there were $16 in fair value and other adjustments during the three months ended March 31, 2019. The Autotech investment recorded in investments and other long-term assets in the condensed consolidated balance sheets was $853 and $437 as of March 31, 2019 and December 31, 2018, respectively.

(15) Investments

Minda Stoneridge Instruments Ltd.

The Company has a 49% equity interest in Minda Stoneridge Instruments Ltd. (“MSIL”), a company based in India that manufactures electronics, instrumentation equipment and sensors primarily for the motorcycle, commercial vehicle and automotive markets. The investment is accounted for under the equity method of accounting. The Company’s investment in MSIL, recorded as a component of investments and other long-term assets, net on the condensed consolidated balance sheets, was $11,738 and $11,288 at March 31, 2019 and December 31, 2018, respectively. Equity in earnings of MSIL included in the condensed consolidated statements of operations was $364 and $521, for the three months ended March 31, 2019 and 2018, 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 remaining 26% noncontrolling interest in PST. As part of the acquisition agreement, 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. See Note 5 for the fair value and foreign currency adjustments of the earn-out consideration for the current and prior periods.

PST has dividends payable to former noncontrolling interest holders of R$23,465 Brazilian real ($5,980) and R$23,204 Brazilian real ($5,980) as of March 31, 2019 and December 31, 2018, respectively. The dividends payable balance includes R$261 Brazilian real ($68) and $249 Brazilian real ($75) in monetary correction for the three months ended March 31, 2019 and 2018, respectively. The dividend is payable on or before January 1, 2020, and is subject to monetary correction based on the Brazilian National Extended Consumer Price inflation index (“IPCA”). The dividend payable related to PST is recorded within other current liabilities on the condensed consolidated balance sheet.

Other Investments

In December 2018, the Company entered into an agreement to make a $10,000 investment in a fund managed by Autotech Ventures (“Autotech”), a venture capital firm focused on ground transportation technology which is accounted for in accordance with ASU 2016-01, “Financial Instruments – Overall (Subtopic 825-10)”. This investment does not have a readily determinable fair value and is measured at costs, less impairments, adjusted for observable price changes in orderly transactions for identical or similar investments of the same issuer. The Company’s $10,000 investment in the Autotech fund will be contributed over the expected ten-year life of the fund. The Company contributed $400 to the Autotech fund and there were $16 in fair value and other adjustments during the three months ended March 31, 2019. The Autotech investment recorded in investments and other long-term assets in the condensed consolidated balance sheets was $853 and $437 as of March 31, 2019 and December 31, 2018, respectively.