RESTRUCTURING (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Accelerated Depreciation							$ 295	$ 1,265	$ 1,361
Restructuring expense							1,212	2,322	2,585
Restructuring and Related Cost, Incurred Cost	$ 241	$ 947	$ (46)	$ 1,575	$ 518	$ 275
Unfavorable impact to operating cash flow							1,182	2,806	2,268
Restructuring Reserve			255				285	255	739
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							1,238	2,194
Unfavorable impact to operating cash flow							1,115	2,771
Restructuring Reserve			162				285	162	739
Employee Severance [Member] | Precise Machine [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							0	0	287
Employee Severance [Member] | Greenville, South Carolina [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							(26)	449	0
Employee Severance [Member] | Engineering Services Melbourne, Australia Closure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							0	47	0
Employee Severance [Member] | Relocation of Machining Operations from Savannah Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							0	0	47
Employee Severance [Member] | Relocation of Machining Parts Operations from St. Charles Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							0	150	228
Employee Severance [Member] | Coweta, Oklahoma Closure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							0	94	0
Employee Severance [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							973	1,582	2,023
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							(26)	128
Unfavorable impact to operating cash flow							67	35
Restructuring Reserve			$ 93				0	93	0
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Relocation of Sheet Metal Operations from Wichita [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost							265	0	0
Aerostructures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							1,218	1,108	2,074
Engineering Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense							$ (6)	$ 1,214	$ 511