Summary of % of Revenues and A/R from Major Customers (Details)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
T.I. Group Automotive Systems
Percentage of revenues from major customers	13.00%	14.00%
Percentage of accounts receivable balances	16	17
Cooper Standard Holdings Inc
Percentage of revenues from major customers	11.00%	12.00%
Percentage of accounts receivable balances	11	15
Parker Hannifin Corporation
Percentage of revenues from major customers	12.00%	10.00%
Percentage of accounts receivable balances	18	15

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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