Annual report pursuant to Section 13 and 15(d)

Profit Sharing/401(K) Plan (Details Textual)

v2.4.0.6
Profit Sharing/401(K) Plan (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Astronics Plan [Member]
     
Profit Sharing/401(K) Plan (Textual) [Abstract]      
Income before income taxes for the plan Total $ 3.0 $ 2.6 $ 1.9
Ballard's Plan [Member]
     
Profit Sharing/401(K) Plan (Textual) [Abstract]      
Employees Contribution 3.00%    
Maximum [Member] | Ballard's Plan [Member]
     
Profit Sharing/401(K) Plan (Textual) [Abstract]      
Employees Contribution 15.00%    
Minimum [Member] | Ballard's Plan [Member]
     
Profit Sharing/401(K) Plan (Textual) [Abstract]      
Employees Contribution 1.00%