Astronics Corporation Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity	$ 466,003	$ 386,625	$ 338,028
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity	(7,426)	(7,156)
Retirement Liability Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Retirement Liability Adjustment – Before Tax	(7,628)	(7,814)
Tax Benefit of Retirement Liability Adjustment	1,605	1,641
Total Shareholders’ Equity	(6,023)	(6,173)
ACCUMULATED OTHER COMPREHENSIVE LOSS
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total Shareholders’ Equity	$ (13,449)	$ (13,329)	$ (14,277)	$ (13,352)