Acquisitions - Schedule of Pro Forma Information (Details) - Snell Advanced Media $ / shares in Units, $ in Thousands	3 Months Ended
Apr. 01, 2018 USD ($) $ / shares
Business Acquisition [Line Items]
Revenues	$ 614,184
Net loss attributable to Belden common stockholders	$ (1,072)
Diluted income (loss) per share attributable to Belden common stockholders (in usd per share) \| $ / shares	$ (0.03)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ References

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-Publisher FASB
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