Contingencies (Detail) - Jul. 04, 2015	USD ($) AirCraft
Loss Contingencies [Line Items]
Number of Boeing aircraft subject to lawsuit | AirCraft	21
Ducommun AeroStructures | El Mirage and Monrovia, California
Loss Contingencies [Line Items]
Reserve for estimated liability	$ 1,500,000
Ducommun AeroStructures | Casmalia and West Covina, California
Loss Contingencies [Line Items]
Reserve for estimated liability	400,000
Possible Loss, minimum	400,000
Possible Loss, maximum	3,100,000
Scenario 1
Loss Contingencies [Line Items]
Estimate of possible loss	1,600,000,000
Scenario 2
Loss Contingencies [Line Items]
Estimate of possible loss	851,000,000
For each false claim made on or before September 28, 1999
Loss Contingencies [Line Items]
Civil penalty	10,000
For each false claim made on or after September 28, 1999
Loss Contingencies [Line Items]
Civil penalty	$ 11,000