Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001059562 (http://www.sec.gov/CIK)

Restructuring and Related Activities [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Restructuring and Related Activities [Abstract]
Summary of incurred and expected restructuring charges	The following table summarizes the incurred charges associated with these restructuring activities:     Year ended December 31,     2016   2015   2014 Fort Worth facility closure   $ —   $ —   $ 287 Savannah machining operations relocation   —   —   47 St. Charles machine parts operations relocation   —   150   228 Coweta machining facility closure   —   94   — Greenville office closure   (26 )   449   — Australia office closure   —   47   — Wichita sheet metal fabrication operations relocation   265   —   — Other employment separation activities   973   1,582   2,023 Total   $ 1,212   $ 2,322   $ 2,585               Expense incurred by segment:             Aerostructures   $ 1,218   $ 1,108   $ 2,074 Engineering Services   (6 )   1,214   511 Total   $ 1,212   $ 2,322   $ 2,585
Summary of restructuring activity	Employee           Severance   Other   Total Accrued restructuring balance as of December 31, 2014 $ 739   $ —   $ 739 Accrual additions 2,194   128   2,322 Cash payments (2,771 )   (35 )   (2,806 ) Accrued restructuring balance as of December 31, 2015 $ 162   $ 93   $ 255 Accrual additions 1,238   (26 )   1,212 Cash payments (1,115 )   (67 )   (1,182 ) Accrued restructuring balance as of December 31, 2016 $ 285   $ —   $ 285