Triumph (TGI) 10-Q 6 Feb 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Dec. 31, 2019	Feb. 04, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	1-12235
Entity Registrant Name	TRIUMPH GROUP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0347963
Entity Address, Address Line One	899 Cassatt Road,
Entity Address, Address Line Two	Suite 210,
Entity Address, City or Town	Berwyn,
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19312
City Area Code	610
Local Phone Number	251-1000
Trading Symbol	TGI
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,849,181
Entity Central Index Key	0001021162
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $.001 per share
Rights [Member]
Entity Information [Line Items]
Title of 12(b) Security	Purchase Rights

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 53,594	$ 92,807
Trade and other receivables, less allowance for doubtful accounts of $4,713 and $3,646	300,730	373,590
Contract with Customer, Asset, Net, Current	241,875	326,667
Inventory, net	473,863	413,560
Prepaid and other current assets	26,133	34,446
Total current assets	1,096,195	1,241,070
Property and equipment, net	433,475	543,710
Goodwill	583,699	583,225
Intangible assets, net	394,782	430,954
Other, net	117,235	55,615
Total assets	2,625,386	2,854,574
Current liabilities:
Current portion of long-term debt	7,795	8,201
Accounts payable	379,989	433,783
Contract with Customer, Liability, Current	264,463	293,719
Accrued expenses	231,065	239,572
Total current liabilities	883,312	975,275
Long-term debt, less current portion	1,400,893	1,480,620
Accrued pension and other postretirement benefits, noncurrent	496,284	540,479
Deferred income taxes, noncurrent	16,709	6,964
Other Liabilities, Noncurrent	361,085	424,549
Stockholders’ equity:
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	52	52
Capital in excess of par value	804,133	867,545
Treasury Stock, Value	(38,424)	(159,154)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(545,299)	(487,684)
Retained Earnings (Accumulated Deficit)	(753,359)	(794,072)
Total stockholders' equity	(532,897)	(573,313)
Total liabilities and stockholders' equity	$ 2,625,386	$ 2,854,574

Consolidated Balance Sheet Pare

Consolidated Balance Sheet Parenthetical (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Allowance for doubtful accounts	$ 3,822	$ 3,646
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	52,460,920	52,460,920
Common Stock, Shares, Outstanding	51,829,774	49,887,268
Treasury Stock, Shares	631,146	2,573,652

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Revenues	$ 704,666	$ 807,895	$ 2,207,007	$ 2,495,903
Operating costs and expenses:
Cost of sales (exclusive of depreciation and amortization shown separately below)	546,282	713,274	1,750,751	2,207,962
Selling, General and Administrative Expense	65,974	71,823	194,512	223,031
Depreciation and amortization	29,843	37,404	104,112	114,349
Restructuring Charges	4,744	2,327	13,490	18,206
Litigation Judgment Gain, net of expenses	(3,857)	0	(9,257)	0
(Gain) Loss on Disposition of Business	60,019	0	55,190	17,837
Operating Expenses	703,005	824,828	2,108,798	2,581,385
Operating Income (Loss)	1,661	(16,933)	98,209	(85,482)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(13,989)	(16,520)	(57,280)	(49,581)
Interest expense and other	33,178	29,309	96,069	83,515
Income (loss) from continuing operations before income taxes	(17,528)	(29,722)	59,420	(119,416)
Income tax expense (benefit)	(3,682)	1,223	12,477	2,739
Net Income (Loss) Attributable to Parent	$ (13,846)	$ (30,945)	$ 46,943	$ (122,155)
Earnings per share-basic:
Earnings Per Share, Basic	$ (0.27)	$ (0.62)	$ 0.94	$ (2.46)
Weighted-average common shares outstanding-basic (in shares)	50,395	49,668	50,074	49,616
Earnings per share-diluted:
Earnings Per Share, Diluted	$ (0.27)	$ (0.62)	$ 0.93	$ (2.46)
Weighted-average common shares outstanding-diluted (in shares)	50,395	49,668	50,591	49,616
Dividends declared and paid per common share (in dollars per share)	$ 0.04	$ 0.04	$ 0.12	$ 0.12

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Net Income (Loss) Attributable to Parent	$ (13,846)	$ (30,945)	$ 46,943	$ (122,155)
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	11,074	(7,725)	2,164	(21,211)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	0	0	4,898	0
Actuarial gain, net of taxes of $0	0	0	(118,073)	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	6,486	1,676	14,044	5,028
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Net of Tax	(1,459)	(2,075)	46,044	(6,225)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent	5,027	(399)	(62,883)	(1,197)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	4,581	47	4,921	787
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(80)	(327)	(1,817)	(1,138)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	4,501	(280)	3,104	(351)
Other Comprehensive Income (Loss), Net of Tax	20,602	(8,404)	(57,615)	(22,759)
Total comprehensive income	$ 6,756	$ (39,349)	$ (10,672)	$ (144,914)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income Parenthetical (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Tax	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During the Period, Tax	0	0	0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net (Gain) Loss, Tax	0	0	0	0
Other Comprehensive Income (Loss), Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service (Cost) Credit, Tax	0	0	0	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During the Period, Tax	0	(72)	0	(136)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	$ 0	$ 67	$ 0	$ 190

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity Consolidated Stockholders' Equity - USD ($)	Total	Retained Earnings [Member]	Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]	Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	Common Stock [Member]Additional Paid-in Capital [Member]
Common Stock, Shares, Outstanding	49,669,848
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 51,000
Capital in excess of par value	851,280,000
Treasury Stock, Value	(179,082,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(367,870,000)
Retained Earnings (Accumulated Deficit)	146,155,000
Total stockholders' equity at Mar. 31, 2018	450,534,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(76,534,000)	$ (76,534,000)
Foreign currency translation adjustment	(14,524,000)
Other Comprehensive Income (Loss), Net of Tax			$ (399,000)	$ (1,035,000)
Dividends, Common Stock, Cash	(1,988,000)	(1,988,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	102,248
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 2,464,000				$ (84,000)
Treasury Stock Reissued at Lower than Repurchase Price					(644,000)	$ (2,548,000)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(23,756)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (532,000)					532,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	16,020
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 384,000					1,028,000
Total stockholders' equity at Jun. 30, 2018	(226,581,000)
Net Income (Loss) Attributable to Parent	(122,155,000)
Total stockholders' equity at Mar. 31, 2018	450,534,000
Foreign currency translation adjustment	(21,211,000)
Other Comprehensive Income (Loss), Net of Tax	(22,759,000)
Total stockholders' equity at Dec. 31, 2018	$ (276,497,000)
Common Stock, Shares, Outstanding	49,764,360
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 51,000
Capital in excess of par value	850,552,000
Treasury Stock, Value	(176,038,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(383,828,000)
Retained Earnings (Accumulated Deficit)	(517,318,000)
Total stockholders' equity at Jun. 30, 2018	(226,581,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(14,676,000)	(14,676,000)
Foreign currency translation adjustment	1,038,000
Other Comprehensive Income (Loss), Net of Tax			(399,000)	964,000
Dividends, Common Stock, Cash	(1,993,000)	(1,993,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	31,596
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 3,266,000				2,671,000
Treasury Stock Reissued at Lower than Repurchase Price					(821,000)	(595,000)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(857)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (16,000)					16,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	17,618
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 327,000					1,148,000
Total stockholders' equity at Sep. 30, 2018	$ (238,051,000)
Common Stock, Shares, Outstanding	49,812,717
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 51,000
Capital in excess of par value	852,402,000
Treasury Stock, Value	(174,311,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(382,225,000)
Retained Earnings (Accumulated Deficit)	(533,968,000)
Net Income (Loss) Attributable to Parent	(30,945,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(30,945,000)	(30,945,000)
Foreign currency translation adjustment	(7,725,000)
Other Comprehensive Income (Loss), Net of Tax	(8,404,000)		(399,000)	(280,000)
Dividends, Common Stock, Cash	(1,994,000)	(1,994,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	25,524
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 2,757,000				1,077,000
Treasury Stock Reissued at Lower than Repurchase Price					(636,000)	(1,680,000)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(4,735)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (97,000)					97,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	14,567
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 321,000					957,000
Total stockholders' equity at Dec. 31, 2018	$ (276,497,000)
Common Stock, Shares, Outstanding	49,848,073
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 51,000
Capital in excess of par value	852,843,000
Treasury Stock, Value	(171,771,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(390,629,000)
Retained Earnings (Accumulated Deficit)	$ (566,991,000)
Common Stock, Shares, Outstanding	49,887,268
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 52,000
Capital in excess of par value	867,545,000
Treasury Stock, Value	(159,154,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(487,684,000)
Retained Earnings (Accumulated Deficit)	(794,072,000)
Total stockholders' equity at Mar. 31, 2019	(573,313,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	18,088,000	18,088,000
Foreign currency translation adjustment	(2,683,000)
Other Comprehensive Income (Loss), Net of Tax			1,409,000	(319,000)
Dividends, Common Stock, Cash	(1,998,000)	(1,998,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	154,802
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 1,903,000				(7,631,000)
Treasury Stock Reissued at Lower than Repurchase Price					(634,000)	(9,534,000)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(51,406)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (1,043,000)					1,043,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	14,489
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 262,000					896,000
Total stockholders' equity at Jun. 30, 2019	(557,919,000)
Net Income (Loss) Attributable to Parent	46,943,000
Total stockholders' equity at Mar. 31, 2019	(573,313,000)
Foreign currency translation adjustment	2,164,000
Other Comprehensive Income (Loss), Net of Tax	(57,615,000)
Total stockholders' equity at Dec. 31, 2019	$ (532,897,000)
Common Stock, Shares, Outstanding	50,005,153
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 52,000
Capital in excess of par value	859,280,000
Treasury Stock, Value	(149,767,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(489,277,000)
Retained Earnings (Accumulated Deficit)	(778,207,000)
Total stockholders' equity at Jun. 30, 2019	(557,919,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	42,701,000	42,701,000
Foreign currency translation adjustment	(6,227,000)
Other Comprehensive Income (Loss), Net of Tax			(69,319,000)	(1,078,000)
Dividends, Common Stock, Cash	(2,003,000)	(2,003,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	59,938
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 2,804,000				(850,000)
Treasury Stock Reissued at Lower than Repurchase Price					(400,000)	(3,654,000)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(764)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (5,000)					5,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	10,196
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 222,000					622,000
Total stockholders' equity at Sep. 30, 2019	$ (590,824,000)
Common Stock, Shares, Outstanding	50,074,523
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 52,000
Capital in excess of par value	858,030,000
Treasury Stock, Value	(145,496,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(565,901,000)
Retained Earnings (Accumulated Deficit)	(737,509,000)
Net Income (Loss) Attributable to Parent	(13,846,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (13,846,000)	0
Stock Issued During Period, Shares, Employee Benefit Plan	1,730,703
Foreign currency translation adjustment	$ 11,074,000
Other Comprehensive Income (Loss), Net of Tax	20,602,000		$ 5,027,000	$ 4,501,000
Dividends, Common Stock, Cash	(2,004,000)	$ (2,004,000)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	18,723
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 3,068,000				1,927,000
Treasury Stock Reissued at Lower than Repurchase Price					$ (428,000)	(1,141,000)	$ 55,396,000
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(5,092)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (131,000)					131,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	10,917
Stock Issued During Period, Value, Employee Stock Purchase Plan	$ 238,000					666,000
Total stockholders' equity at Dec. 31, 2019	(532,897,000)
Stock Issued During Period, Value, Treasury Stock Reissued						$ 105,396,000
Stock Issued During Period, Value, Employee Benefit Plan	$ 50,000,000
Common Stock, Shares, Outstanding	51,829,774
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 50,074,523 and 49,887,268 shares outstanding	$ 52,000
Capital in excess of par value	804,133,000
Treasury Stock, Value	(38,424,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(545,299,000)
Retained Earnings (Accumulated Deficit)	$ (753,359,000)

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity Consolidated Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During the Period, Tax	$ 0	$ 0	$ 0	(72)
Other Comprehensive Income (Loss), Tax				$ (5)	$ (101)	$ 160
Dividends declared and paid per common share (in dollars per share)	$ 0.04	$ 0.04	$ 0.04	$ 0.04	$ 0.04	$ 0.04

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating Activities
Net Income (Loss) Attributable to Parent	$ 46,943	$ (122,155)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	104,112	114,349
Amortization of acquired contract liabilities	(56,153)	(48,769)
(Gain) Loss on Disposition of Business	55,190	17,837
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	14,373	0
Other amortization included in interest expense	9,114	6,811
Provision for doubtful accounts receivable	632	622
Provision for deferred income taxes	8,108	0
Employee stock-based compensation	8,245	8,509
Changes in assets and liabilities, excluding the effects of acquisitions and dispositions of businesses:
Trade and other receivables	72,278	8,669
Contract assets	53,047	6,240
Inventories	(67,764)	(61,563)
Prepaid expenses and other current assets	11,315	1,615
Accounts payable, accrued expenses and other current liabilities	(143,718)	(72,639)
Accrued pension and other postretirement benefits	(46,693)	(55,150)
Other	(995)	2,508
Net cash (used in) provided by operating activities	39,288	(193,116)
Investing Activities
Capital expenditures	(27,250)	(34,824)
Payments for (Proceeds from) Businesses and Interests in Affiliates	(49,956)	(41,417)
Net cash used in investing activities	22,706	6,593
Financing Activities
Net increase in revolving credit facility	(215,000)	218,066
Proceeds from issuance of long-term debt and capital leases	570,980	45,000
Repayment of debt and capital lease obligations	(433,197)	(73,011)
Payment of deferred financing costs	(17,545)	(1,941)
Dividends paid	(6,005)	(5,975)
Repurchase of restricted shares for minimum tax obligation	(1,179)	(645)
Net cash (used in) provided by financing activities	(101,946)	181,494
Effect of exchange rate changes on cash	739	(2,126)
Net change in cash and cash equivalents	(39,213)	(7,155)
Cash at beginning of period	92,807	35,819
Cash at end of period	$ 53,594	$ 28,664

BASIS OF PRESENTATION AND ORGAN

BASIS OF PRESENTATION AND ORGANIZATION	9 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	BASIS OF PRESENTATION AND ORGANIZATION The accompanying unaudited condensed consolidated financial statements of Triumph Group, Inc. (the "Company") have been prepared in conformity with accounting principles generally accepted in the United States ("U.S. GAAP") for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the results of operations, financial position and cash flows. The results of operations for the three and nine months ended December 31, 2019 , are not necessarily indicative of results that may be expected for the year ending March 31, 2020 . The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the fiscal 2019 audited consolidated financial statements and notes thereto included in the Company's Form 10-K for the year ended March 31, 2019 , filed with the Securities and Exchange Commission (the "SEC") on May 23, 2019. The Company designs, engineers, manufactures, repairs, and overhauls a broad portfolio of aerostructures, aircraft components, accessories, subassemblies, and systems. The Company serves a broad, worldwide spectrum of the aviation industry, including original equipment manufacturers of commercial, regional, business, and military aircraft and aircraft components, as well as commercial and regional airlines and air cargo carriers. The Company and its subsidiaries are organized based on the products and services that they provide. Under this organizational structure, the Company has three reportable segments: Integrated Systems, Aerospace Structures, and Product Support. Integrated Systems consists of the Company’s operations that provide integrated solutions, including design, development, and support of proprietary components, subsystems and systems, as well as production of complex assemblies using external designs. Capabilities include hydraulic, mechanical and electromechanical actuation, power and control; a complete suite of aerospace gearbox solutions, including engine accessory gearboxes and helicopter transmissions; active and passive heat exchange technology; fuel pumps, fuel metering units and Full Authority Digital Electronic Control fuel systems; and hydromechanical and electromechanical primary and secondary flight controls. Aerospace Structures consists of the Company’s operations that supply commercial, business, regional and military manufacturers with large metallic and composite structures and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Products include wings; wing boxes; fuselage panels; horizontal and vertical tails; subassemblies such as floor grids; and aircraft interior systems, including air ducting and thermal acoustic insulations systems. Aerospace Structures also has the capability to engineer detailed structural designs in metal and composites. Capabilities include advanced composite and interior structures, joining processes such as welding, autoclave bonding and conventional mechanical fasteners and a variety of special processes, including super plastic titanium forming, aluminum and titanium chemical milling, surface treatments, and integrated testing and certification services. Product Support consists of the Company’s operations that provide full life cycle solutions for commercial, regional and military aircraft. The Company’s extensive product and service offerings include full post-delivery value chain services that simplify the maintenance, repair, and overhaul ("MRO") supply chain. Through its ground support equipment maintenance, component MRO and post-production supply chain activities, Product Support is positioned to provide integrated planeside repair solutions globally. Capabilities include metallic and composite aircraft structures; nacelles; thrust reversers; interiors; auxiliary power units; and a wide variety of pneumatic, hydraulic, fuel and mechanical accessories. Repair services generally involve the replacement and/or remanufacturing of parts, which is similar to the original manufacture of the part. The processes that the Company performs related to repair and overhaul services are essentially the repair of wear parts or replacement of parts that are beyond economic repair. The repair service generally involves remanufacturing a complete part or a component of a part. Standards Recently Implemented In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842) . This ASU requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use ("ROU") assets. The Company adopted the standard as of April 1, 2019, using the modified retrospective approach and applying the standard’s transition provisions at the adoption date. Reporting periods beginning on or after April 1, 2019, are presented in accordance with Accounting Standards Codification ("ASC") 842, Leases . Prior periods have not been adjusted and continue to be reported in accordance with previous accounting standards. The Company elected the package of practical expedients permitted under the transition guidance, which among other things, allows the Company to not reassess the historical lease classification. Adoption of the new standard resulted in the recognition of operating lease ROU assets and lease liabilities of $76,444 and $84,663 , respectively, with the difference due to prepaid and deferred rent that were reclassified to the ROU asset value. An adjustment to opening retained earnings of $225 was also recognized. The standard did not materially affect the Company's consolidated statements of operations or cash flows. See Note 5 for further details. In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . This ASU permits a company to reclassify the income tax effects of the 2017 Tax Cuts and Jobs Act (“U.S. tax reform”) on items within AOCI to retained earnings. The Company adopted the provisions of this ASU in the first quarter of 2019 and elected not to reclassify the income tax effects of U.S. tax reform from items in accumulated other comprehensive income. The Company's policy is to release the tax effects from accumulated other comprehensive income when the related portfolio is derecognized. Standards Issued Not Yet Implemented In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This ASU modifies the measurement of expected credit losses of certain financial instruments. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The amendments in this ASU should be applied on a modified retrospective basis to all periods presented. The Company is currently evaluating the impact of adopting ASU 2016-13 and does not expect the adoption to have a significant impact on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement . This ASU modifies the disclosure requirements for fair value measurements by removing, modifying or adding certain disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company is currently evaluating the effect that ASU 2018-13 will have on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans , which modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for annual periods beginning after December 15, 2020, with early adoption permitted. The amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company is currently evaluating the effect that ASU 2018-14 will have on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract . This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company currently expects to adopt the standard prospectively and does not expect adoption to have a significant impact on its consolidated financial statements and related disclosures.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Use of Estimates The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. Revenue Recognition The Company's revenue is principally from contracts with customers to provide design, development, manufacturing, and support services associated with specific customer programs. The Company regularly enters into long-term master supply agreements that establish general terms and conditions and may define specific program requirements. Many agreements include clauses that provide sole supplier status to the Company for the duration of the program’s life. Purchase orders (or authorizations to proceed) are issued pursuant to the master supply agreements. Additionally, a majority of the Company’s agreements with customers include options for future purchases. Such options primarily reduce the administrative effort of issuing subsequent purchase orders and do not represent material rights granted to customers. The Company generally enters into agreements directly with its customers and is the principal in all current contracts. The identification of a contract with a customer for purposes of accounting and financial reporting requires an evaluation of the terms and conditions of agreements to determine whether presently enforceable rights and obligations exist. Management considers a number of factors when making this evaluation that include, but are not limited to, the nature and substance of the business exchange, the specific contractual terms and conditions, the promised products and services, the termination provisions in the contract, as well as the nature and execution of the customer’s ordering process and how the Company is authorized to perform work. Generally, presently enforceable rights and obligations are not created until a purchase order is issued by a customer for a specified number of units of product or services. Therefore, the issuance of a purchase order is generally the point at which a contract is identified for accounting and financial reporting purposes. Management identifies the promises to the customer. Promises are generally explicitly stated in each contract, but management also evaluates whether any promises are implied based on the terms of the agreement, past business practice, or other facts and circumstances. Each promise is evaluated to determine if it is a performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service. The Company considers a number of factors when determining whether a promise is a performance obligation, including whether the customer can benefit from the good or service on its own or together with other resources that are readily available to the customer, whether the Company provides a significant service of integrating goods or services to deliver a combined output to the customer, or whether the goods or services are highly interdependent. The Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for original equipment manufacturers ("OEMs"). The transaction price for a contract reflects the consideration the Company expects to receive for fully satisfying the performance obligations in the contract. Typically, the transaction price consists solely of fixed consideration but may include variable consideration for contractual provisions such as unpriced contract modifications, cost-sharing provisions, and other receipts or payments to customers. The Company identifies and estimates variable consideration, typically at the most likely amount the Company expects to receive from its customers. Variable consideration is only included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized for the contract will not occur, or when the uncertainty associated with the variable consideration is resolved. The Company's contracts with customers generally require payment under normal commercial terms after delivery with payment typically required within 30 to 120 days of delivery. However, a subset of the Company’s current contracts includes significant financing components because the timing of the transfer of the underlying products and services under contract are at the customers’ discretion. For these contracts, the Company adjusts the transaction price to reflect the effects of the time value of money. The Company generally is not subject to collecting sales tax and has made an accounting policy election to exclude from the transaction price any sales and other similar taxes collected from customers. As a result, any such collections are accounted for on a net basis. The total transaction price is allocated to each of the identified performance obligations using the relative stand-alone selling price. The objective of the allocation is to reflect the consideration that the Company expects to receive in exchange for the products or services associated with each performance obligation. Stand-alone selling price is the price at which the Company would sell a promised good or service separately to a customer. Stand-alone selling prices are established at contract inception, and subsequent changes in transaction price are allocated on the same basis as at contract inception. When stand-alone selling prices for the Company’s products and services are not observable, the Company uses either the “Expected Cost Plus a Margin” or "Adjusted Market Assessment" approaches to estimate stand-alone selling price. Expected costs are typically derived from the available periodic forecast information. Revenue is recognized when or as control of promised products or services transfers to a customer and is recognized at the amount allocated to each performance obligation associated with the transferred products or services. Service sales, principally representing repair, maintenance, and engineering activities are recognized over the contractual period or as services are rendered. Sales under long-term contracts with performance obligations satisfied over time are recognized using either an input or output method. The Company recognizes revenue over time as it performs on these contracts because of the continuous transfer of control to the customer as represented by work that is performed on a customer-owned asset or by contractual terms that entitle the Company to the reimbursement of costs plus a reasonable profit for work performed to manufacture products for which the Company has no alternate use. With control transferring over time, revenue is recognized based on the extent of progress toward completion of the performance obligation. The Company generally uses the cost-to-cost input method of progress for our contracts because it best depicts the transfer of control to the customer that occurs as work progresses. Under the cost-to-cost method, the extent of progress toward completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. The Company reviews its cost estimates on significant contracts on a periodic basis, or when circumstances change and warrant a modification to a previous estimate. Cost estimates are largely based on negotiated or estimated purchase contract terms, historical performance trends and other economic projections. Significant factors that influence these estimates include inflationary trends, technical and schedule risk, internal and subcontractor performance trends, business volume assumptions, asset utilization, and anticipated labor agreements. Revenue and cost estimates are regularly monitored and revised based on changes in circumstances. Impacts from changes in estimates of net sales and cost of sales are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a performance obligation’s percentage of completion. Forward loss reserves for anticipated losses on long-term contracts are recorded in full when such losses become evident, to the extent required, and are included in contract liabilities on the accompanying consolidated balance sheets. For the three months ended December 31, 2019 , cumulative catch-up adjustments from changes in estimates, including changes in forward loss estimates, increased net sales by approximately $4,722 and decreased operating income, net income, and earnings per share by approximately $(210) , $(166) and $0.00 , net of tax, respectively. For the three months ended December 31, 2018 , cumulative catch-up adjustments from changes in estimates increased net sales by approximately $674 and increased operating loss, net loss, and loss per share by approximately $(47,028) , $(47,028) and $(0.95) , net of tax, respectively. For the nine months ended December 31, 2019 , cumulative catch-up adjustments from changes in estimates, including changes in forward loss estimates, increased net sales by approximately $2,347 and decreased operating income, net income, and earnings per share by approximately $(16,393) , $(12,950) and $(0.26) , net of tax, respectively. For the nine months ended December 31, 2018 , cumulative catch-up adjustments from changes in estimates decreased net sales by approximately $(5,632) and increased operating loss, net loss, and loss per share by approximately $(59,407) , $(59,407) and $(1.20) , net of tax, respectively. The fiscal year 2019 cumulative catch-up adjustments do not include a non-cash charge the Company recorded as a result of the adoption of ASU 2017-07 of $87,241 due to a change in estimate inseparable from a change in accounting principles, which is presented on the accompanying consolidated statements of operations within cost of sales. Revenues for performance obligations that are not recognized over time are recognized at the point in time when control transfers to the customer. For performance obligations that are satisfied at a point in time, the Company evaluates the point in time when the customer can direct the use of and obtain the benefits from the products and services. Generally, the shipping terms determine the point in time when control transfers to customers. Shipping and handling activities are not considered performance obligations and related costs are included in cost of sales as incurred. Differences in the timing of revenue recognition and contractual billing and payment terms result in the recognition contract assets and liabilities. Refer to Note 4 for further discussion. The portion of the Company's revenue resulting from transactions other than contracts with customers pertains to the non-cash amortization of acquired contract liabilities that were recognized as fair value adjustments through purchase accounting from various acquisitions. Leases The Company leases office space, manufacturing facilities, land, vehicles, and equipment. The Company determines if an agreement is or contains a lease at the lease inception date and recognizes right-of-use assets and lease liabilities at the lease commencement date. A ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (short-term leases). ROU assets represent the Company's right to use an underlying asset during the lease term, and lease liabilities represent the Company's obligation to make lease payments arising from the lease. The determination of the length of lease terms is affected by options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The existence of significant economic incentive is the primary consideration when assessing whether the Company is reasonably certain of exercising an option in a lease. Both finance and operating lease ROU assets and liabilities are recognized at commencement date and measured as the present value of lease payments to be made over the lease term. As the interest rate implicit in the lease is not readily available for most of the Company's leases, the Company uses its estimated incremental borrowing rate in determining the present value of lease payments. The estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets. Concentration of Credit Risk The Company’s trade and other accounts receivable are exposed to credit risk. However, the risk is limited due to the diversity of the customer base and the customer base’s wide geographical area. Trade accounts receivable from The Boeing Company ("Boeing") (representing commercial, military and space) represented approximately 15% and 18% of total trade accounts receivable as of December 31, 2019 and March 31, 2019 , respectively. Trade accounts receivable from Gulfstream Aerospace Corporation ("Gulfstream") represented approximately 4% and 11% of total trade accounts receivable as of December 31, 2019 and March 31, 2019 , respectively. Trade and other accounts receivable from Bombardier Inc. ("Bombardier") include receivables from transition services and represented approximately 12% and 13% as of December 31, 2019 and March 31, 2019 , respectively. The Company had no other concentrations of credit risk of more than 10% . Sales to Boeing for the nine months ended December 31, 2019 , were $742,495 , or 34% of net sales, of which $172,438 , $552,641 , and $17,416 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Boeing for the nine months ended December 31, 2018 , were $761,952 , or 31% of net sales, of which $167,870 , $583,971 and $10,111 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Gulfstream for the nine months ended December 31, 2019 , were $268,917 , or 12% of net sales, of which $1,658 , $266,421 , and $838 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Gulfstream for the nine months ended December 31, 2018 , were $261,880 , or 10% of net sales, of which $1,585 , $259,812 , and $483 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. No other single customer accounted for more than 10% of the Company’s net sales. However, the loss of any significant customer, including Boeing and Gulfstream, could have a material adverse effect on the Company and its operating subsidiaries. Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. When determining fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and also considers assumptions that market participants would use when pricing an asset or liability. The fair value hierarchy has three levels of inputs that may be used to measure fair value: Level 1—Unadjusted quoted prices in active markets for identical assets or liabilities; Level 2—Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability; and Level 3—Unobservable inputs for the asset or liability. Warranty Reserves A reserve has been established to provide for the estimated future cost of warranties on our delivered products. The Company periodically reviews the reserves and adjustments are made accordingly. A provision for warranty on products delivered is made on the basis of historical experience and identified warranty issues. Warranties cover such factors as non-conformance to specifications and defects in material and workmanship. The majority of the Company's agreements include a 3 -year warranty, although certain programs have warranties up to twenty years . The warranty reserves as of December 31, 2019 and March 31, 2019 , were $59,577 and $58,395 , respectively. Supplemental Cash Flow Information The Company made income tax payments, net of refunds of $4,370 during the nine months ended December 31, 2019 . The Company received income tax refunds, net of payments of $6,243 during the nine months ended December 31, 2018 . As of December 31, 2019 , the Company remains able to purchase an additional 2,277,789 shares under the existing stock repurchase program. However, there are certain restrictions placed on the repurchase program by the Company's lenders that prevent any repurchases at this time.

Revenue Recognition and Contrac

Revenue Recognition and Contracts with Customers Contract Assets and Liabilities (Notes)	9 Months Ended
	Dec. 31, 2019
Change in Contract with Customer, Asset and Liability [Abstract]
Revenue from Contract with Customer [Text Block]	4. REVENUE RECOGNITION AND CONTRACTS WITH CUSTOMERS Disaggregation of Revenue The Company disaggregates revenue based on the method of measuring satisfaction of the performance obligation either over time or at a point in time. Additionally, the Company disaggregates revenue based upon the end market where products and services are transferred to the customer. The Company’s principal operating segments and related revenue are discussed in Note 13, Segments. The following table shows disaggregated net sales satisfied overtime and at a point in time (excluding intercompany sales) for the three and nine months ended December 31, 2019 and 2018 : Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Integrated Systems Satisfied over time $ 76,267 $ 66,208 $ 224,442 $ 205,379 Satisfied at a point in time 188,739 175,370 558,015 515,547 Revenue from contracts with customers 265,006 241,578 782,457 720,926 Amortization of acquired contract liabilities 8,377 8,172 26,126 25,789 Total revenue 273,383 249,750 808,583 746,715 Aerospace Structures Satisfied over time $ 330,657 $ 434,870 $ 1,075,141 $ 1,385,368 Satisfied at a point in time 28,582 47,547 100,455 137,390 Revenue from contracts with customers 359,239 482,417 1,175,596 1,522,758 Amortization of acquired contract liabilities 8,220 6,559 30,027 22,980 Total revenue 367,459 488,976 1,205,623 1,545,738 Product Support Satisfied over time $ 58,962 $ 64,942 $ 179,383 $ 189,174 Satisfied at a point in time 4,862 4,227 13,418 14,276 Total revenue from contracts with customers 63,824 69,169 192,801 203,450 $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903 The following table shows disaggregated net sales by end market (excluding intercompany sales) for the three and nine months ended December 31, 2019 and 2018 : Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Integrated Systems Commercial aerospace $ 145,026 $ 124,453 $ 413,263 $ 378,117 Military 93,405 87,486 277,009 258,488 Business jets 10,358 16,369 43,897 43,939 Regional 8,166 7,048 24,026 21,004 Non-aviation 8,051 6,222 24,262 19,378 Revenue from contracts with customers 265,006 241,578 782,457 720,926 Amortization of acquired contract liabilities 8,377 8,172 26,126 25,789 Total revenue $ 273,383 $ 249,750 $ 808,583 $ 746,715 Aerospace Structures Commercial aerospace $ 208,943 $ 230,556 $ 681,471 $ 756,661 Military 27,394 54,275 83,773 178,679 Business jets 98,370 181,511 330,178 541,520 Regional 24,523 7,807 80,155 24,342 Non-aviation 9 8,268 19 21,556 Revenue from contracts with customers 359,239 482,417 1,175,596 1,522,758 Amortization of acquired contract liabilities 8,220 6,559 30,027 22,980 Total revenue $ 367,459 $ 488,976 $ 1,205,623 $ 1,545,738 Product Support Commercial aerospace $ 47,206 $ 53,596 $ 148,552 $ 158,158 Military 12,455 11,383 32,726 32,637 Business jets 418 350 1,383 2,143 Regional 3,144 3,840 9,408 10,512 Non-aviation 601 — 732 — Total revenue from contracts with customers 63,824 69,169 192,801 203,450 $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903 Contract Assets and Liabilities Contract assets primarily represent revenues recognized for performance obligations that have been satisfied or partially satisfied but for which amounts have not been billed. This typically occurs when revenue is recognized over time but the Company's contractual right to bill the customer and receive payment is conditional upon the satisfaction of additional performance obligations in the contract, such as final delivery of the product. Contract assets are recognized when the revenue associated with the contract is recognized prior to billing and derecognized when billed in accordance with the terms of the contract. The Company performs ongoing evaluations of the potential impairment of its contract assets based on prior experience and specific matters when they arise. No impairments to contract assets were recorded for the period ended December 31, 2019 . Contract liabilities are recorded when customers remit contractual cash payments in advance of the Company satisfying performance obligations under contractual arrangements, including those with performance obligations to be satisfied over a period of time. Contract liabilities other than those pertaining to forward loss reserves are derecognized when or as revenue is recognized. Contract modifications can also impact contract asset and liability balances. When contracts are modified to account for changes in contract specifications and requirements, the Company considers whether the modification either creates new or changes the existing enforceable rights and obligations. Contract modifications that are for goods or services that are not distinct from the existing contract, due to the significant integration with the original good or service provided, are accounted for as if they were part of that existing contract. The effect of a contract modification to an existing contract on the transaction price and our measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue (either as an increase in or a reduction of revenue) on a cumulative catch-up basis. When the modifications include additional performance obligations that are distinct and at relative stand-alone selling price, they are accounted for as a new contract and performance obligation, which are recognized prospectively. Contract balances are classified as assets or liabilities on a contract-by-contract basis at the end of each reporting period. The following table summarizes our contract assets and liabilities balances: December 31, 2019 March 31, 2019 Change Contract assets $ 265,190 $ 326,667 $ (61,477 ) Contract liabilities (376,522 ) (450,051 ) 73,529 Net contract liability $ (111,332 ) $ (123,384 ) $ 12,052 The Company recognized revenue due to changes in estimates associated with performance obligations satisfied or partially satisfied in previous periods of $2,347 . The decrease in contract assets is the result of $76,667 in contract assets liquidated as part of the assignment of the E2-Jets contract to ASTK partially offset by revenue recognized in excess of amounts billed during the period ended December 31, 2019 . The decrease in contract liabilities is the result of revenue recognized in excess of the receipt of additional customer advances during the period as well as $12,641 in contract liabilities liquidated as part of the assignment of the E2-Jets contract to ASTK. For the period ended December 31, 2019 , the Company recognized $72,293 of revenue that was included in the contract liability balance at the beginning of the period. Noncurrent contract assets presented in other, net on the accompanying consolidated balance sheets as of December 31, 2019 and March 31, 2019 , were $23,315 and $34,185 , respectively. Noncurrent contract liabilities presented in other noncurrent liabilities on the accompanying consolidated balance sheets as of December 31, 2019 and March 31, 2019 , were $112,059 and $156,332 , respectively. Performance Obligations Customers generally contract with the Company for requirements in a segment relating to a specific program. A single contract may contain multiple performance obligations consisting of both recurring and nonrecurring elements. As of December 31, 2019 , the Company has the following unsatisfied, or partially unsatisfied, performance obligations that are expected to be recognized in the future as noted in the table below. The Company expects options to be exercised in addition to the amounts presented below. Total Less than 1-3 years 4-5 years More than 5 Unsatisfied performance obligations $ 4,142,321 $ 1,798,557 $ 1,320,852 $ 519,786 $ 503,126

LEASES LEASES (Notes)

LEASES LEASES (Notes)	9 Months Ended
	Dec. 31, 2019
Lessee Disclosure [Abstract]
Lessee, Leases [Policy Text Block]	Leases The Company leases office space, manufacturing facilities, land, vehicles, and equipment. The Company determines if an agreement is or contains a lease at the lease inception date and recognizes right-of-use assets and lease liabilities at the lease commencement date. A ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (short-term leases). ROU assets represent the Company's right to use an underlying asset during the lease term, and lease liabilities represent the Company's obligation to make lease payments arising from the lease. The determination of the length of lease terms is affected by options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The existence of significant economic incentive is the primary consideration when assessing whether the Company is reasonably certain of exercising an option in a lease. Both finance and operating lease ROU assets and liabilities are recognized at commencement date and measured as the present value of lease payments to be made over the lease term. As the interest rate implicit in the lease is not readily available for most of the Company's leases, the Company uses its estimated incremental borrowing rate in determining the present value of lease payments. The estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets. 5. LEASES The components of lease expense for the nine months ended December 31, 2019 , are disclosed in the table below. Lease Cost Financial Statement Classification Nine Months Ended December 31, 2019 Operating lease cost Cost of sales or Selling, general and administrative expense $ 17,829 Variable lease cost Cost of sales or Selling, general and administrative expense 5,892 Financing Lease Cost: Amortization of right-of-use assets Depreciation and amortization 4,224 Interest on lease liability Interest expense and other 1,579 Total lease cost (1) $ 29,524 (1) Total lease cost does not include short-term leases or sublease income, both of which are immaterial. Supplemental cash flow information for the nine months ended December 31, 2019 , is disclosed in the table below. Nine Months Ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used in operating leases $ 14,046 Operating cash flows used in finance leases 1,600 Financing cash flows used in finance leases 6,516 ROU assets obtained in exchange for lease liabilities Operating leases $ 2,569 Finance leases 811 Supplemental balance sheet information related to leases as of December 31, 2019 , is disclosed in the table below. Leases Classification December 31, 2019 Assets Operating lease ROU assets Other, net $ 66,578 Finance lease ROU assets, cost Property and equipment, net 39,364 Accumulated amortization Property and equipment, net (17,557 ) Finance lease ROU assets, net 21,807 Total lease assets $ 88,385 Liabilities Current Operating Accrued expenses $ 14,028 Finance Current portion of long-term debt 7,795 Noncurrent Operating Other noncurrent liabilities 58,152 Finance Long-term debt, less current portion 18,172 Total lease liabilities $ 98,147 Information related to lease terms and discount rates as of December 31, 2019 , is disclosed in the table below: December 31, 2019 Weighted average remaining lease term (years) Operating leases 7.2 Finance leases 6.7 Weighted average discount rate Operating leases 6.4 % Finance leases 5.8 % The maturity of the Company's lease liabilities as of December 31, 2019 , is disclosed in the table below. Operating leases Finance leases Total FY2020 (remaining of year) $ 7,359 $ 2,348 $ 9,707 FY2021 16,753 8,786 25,539 FY2022 14,451 5,751 20,202 FY2023 11,021 2,873 13,894 FY2024 8,322 2,112 10,434 Thereafter 35,810 11,263 47,073 Total lease payments 93,716 33,133 126,849 Less: Imputed interest (21,536 ) (7,166 ) (28,702 ) Total lease liabilities $ 72,180 $ 25,967 $ 98,147

INVENTORIES

INVENTORIES	9 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories are stated at the lower of cost (average-cost or specific-identification methods) or market. The components of inventories are as follows: December 31, 2019 March 31, 2019 Raw materials $ 39,036 $ 35,883 Work-in-process, including manufactured and purchased components 322,336 277,996 Finished goods 57,061 42,399 Rotable assets 55,430 57,282 Total inventories $ 473,863 $ 413,560

LONG-TERM DEBT

LONG-TERM DEBT	9 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
LONG-TERM DEBT	Leases Classification December 31, 2019 Assets Operating lease ROU assets Other, net $ 66,578 Finance lease ROU assets, cost Property and equipment, net 39,364 Accumulated amortization Property and equipment, net (17,557 ) Finance lease ROU assets, net 21,807 Total lease assets $ 88,385 Liabilities Current Operating Accrued expenses $ 14,028 Finance Current portion of long-term debt 7,795 Noncurrent Operating Other noncurrent liabilities 58,152 Finance Long-term debt, less current portion 18,172 Total lease liabilities $ 98,147 Long-term debt consists of the following: December 31, 2019 March 31, 2019 Revolving line of credit $ — $ 215,000 Receivable securitization facility 75,000 80,700 Finance leases 25,967 31,292 Senior secured notes due 2024 525,000 — Senior notes due 2021 — 375,000 Senior notes due 2022 300,000 300,000 Senior notes due 2025 500,000 500,000 Less: Debt issuance costs (17,279 ) (13,171 ) 1,408,688 1,488,821 Less: Current portion 7,795 8,201 $ 1,400,893 $ 1,480,620 Revolving Credit Facility On September 23, 2019, the Company and its subsidiary co-borrowers and guarantors entered into an Eleventh Amendment to the Credit Agreement (the “Eleventh Amendment” and the existing Credit Agreement as amended by the Eleventh Amendment, the “Credit Agreement”) with the Administrative Agent and the Lenders party thereto. Among other things, the Eleventh Amendment: (i) permits the Company to incur indebtedness in respect of the Senior Secured Notes due 2024 (the "2024 Notes") in an aggregate principal amount of up to $525,000 , subject to the terms and conditions of the Intercreditor Agreement; (ii) lowers the aggregate amount of revolving credit commitments from $700,000 to $600,000 upon the earlier of (a) the completion by the Company of $100,000 in certain asset sales or divestitures or (b) March 31, 2020; (iii) extends, with respect to extending banks representing approximately $406,500 of $600,000 total commitments outstanding as of March 31, 2020, the expiration date for the revolving line of credit available to the Company pursuant to the Credit Agreement to March 15, 2024; and retains an accordion feature that permits the Company to request an increase to the revolving credit commitments by up to $200,000 ; (iv) adds an additional mandatory prepayment provision requiring that the Company prepay any outstanding revolving credit loans in an amount equal to (a) with respect to an Identified Asset Sale (as defined in the Credit Agreement) the greater of (x) $50,000 and (y) 100% of the net asset sale proceeds received in connection therewith, and (b) with respect to other Specified Asset Sales (as defined in the Credit Agreement), 100% of the net asset proceeds received from such other Specified Asset Sales; and (v) modifies certain financial covenants and other terms. In connection with the Eleventh Amendment to the Credit Agreement, the Company incurred $6,944 of financing costs. These costs, along with the $6,222 of unamortized financing costs subsequent to the Tenth Amendment, are being amortized over the remaining term of the Credit Agreement on a lender-by-lender basis. In accordance with the reduction in the capacity of the Credit Agreement, the Company wrote off a proportional amount of unamortized financing fees existing prior to the Eleventh Amendment. The divestiture of the Company's manufacturing operations in Nashville resulted in a reduction of the revolving credit commitments to $640,000 . The obligations under the Credit Agreement and related documents are secured by liens on substantially all assets of the Company and its domestic subsidiaries pursuant to a Second Amended and Restated Guarantee and Collateral Agreement, dated as of November 19, 2013, among the administrative agent, the Company and the subsidiaries of the Company party thereto. Pursuant to the Credit Agreement, the Company can borrow, repay and re-borrow revolving credit loans, and cause to be issued letters of credit, in an aggregate principal amount not to exceed $700,000 outstanding at any time as such revolving credit commitments are reduced as discussed above. The Credit Agreement bears interest at either: (i) London Interbank Offered Rate ("LIBOR") plus between 1.50% and 3.50% ; (ii) the prime rate; or (iii) an overnight rate at the option of the Company. The applicable interest rate is based upon the Company’s ratio of total indebtedness to earnings before interest, taxes, depreciation and amortization provided, however, that during the Pricing Restriction Period (as defined in the Credit Agreement), the loans will bear interest at the highest rate above LIBOR. In addition, the Company is required to pay a commitment fee of 0.50% on the unused portion of the Credit Agreement. The Company’s obligations under the Credit Agreement are guaranteed by the Company’s domestic subsidiaries. At December 31, 2019 , there were $0 in borrowings and $22,338 in letters of credit outstanding under the Revolving Line of Credit provisions of the Credit Agreement, primarily to support insurance policies. At March 31, 2019 , there were $215,000 in outstanding borrowings and $30,773 in letters of credit outstanding under the Revolving Line of Credit provisions of the Credit Agreement, primarily to support insurance policies. The level of unused borrowing capacity under the Revolving Line of Credit provisions of the Credit Agreement varies from time to time depending in part upon its compliance with financial and other covenants set forth in the related agreement. The Credit Agreement contains certain affirmative and negative covenants, including limitations on specified levels of indebtedness to earnings before interest, taxes, depreciation and amortization, and interest coverage requirements, and includes limitations on, among other things, liens, mergers, consolidations, sales of assets, and incurrence of debt. If an event of default were to occur under the Credit Agreement, the lenders would be entitled to declare all amounts borrowed under it immediately due and payable. The occurrence of an event of default under the Credit Agreement could also cause the acceleration of obligations under certain other agreements. The Company is currently in compliance with all such covenants. As of December 31, 2019 , the Company had borrowing capacity under this agreement of $581,329 after reductions for borrowings, letters of credit outstanding under the facility and consideration of covenant limitations. Receivables Securitization Facility In December 2019, the Company amended its receivable securitization facility (the "Securitization Facility") decreasing the purchase limit from $125,000 to $75,000 and extending the term through December 2022. In connection with the Securitization Facility, the Company sells on a revolving basis certain eligible accounts receivable to Triumph Receivables, LLC, a wholly-owned special-purpose entity, which in turn sells a percentage ownership interest in the receivables to commercial paper conduits sponsored by financial institutions. The Company is the servicer of the trade accounts receivable under the Securitization Facility. As of December 31, 2019 , the maximum amount available under the Securitization Facility was $75,000 . Interest rates are based on LIBOR plus a program fee and a commitment fee. The program fee is 0.13% on the amount outstanding under the Securitization Facility. Additionally, the commitment fee is 0.50% on 100.00% of the maximum amount available under the Securitization Facility. The Company secures its trade accounts receivable, which are generally non-interest-bearing, in transactions that are accounted for as borrowings pursuant to ASC 860, Transfers and Servicing. The agreement governing the Securitization Facility contains restrictions and covenants, including limitations on the making of certain restricted payments; creation of certain liens; and certain corporate acts such as mergers, consolidations and the sale of all or substantially all of the Company's assets. Senior Secured Notes Due 2024 On September 23, 2019, the Company issued $525,000 principal amount of 6.250% Senior Secured Notes due 2024. The 2024 Notes were sold at 100% of principal amount and have an effective interest yield of 6.250% . Interest on the 2024 Notes accrues at the rate of 6.250% per annum and is payable semiannually in cash in arrears on March 15 and September 15 of each year, commencing on March 15, 2020. In connection with the issuance of the 2024 Notes, the Company incurred approximately $9,300 of costs, which were deferred and are being amortized over the term of the 2024 Notes. The 2024 Notes are second lien secured obligations of the Company and its subsidiary guarantors. The 2024 Notes: • rank equal in right of payment to existing and future senior indebtedness of the Company and its subsidiary guarantors, including the obligations of the Company and its subsidiary guarantors under the Company’s credit facility; • are effectively subordinated to all obligations of the Company and its subsidiary guarantors that are either (A) secured by a lien on the Collateral (as defined below) that is senior or prior to the second-priority liens securing the 2024 Notes, including the first-priority liens securing borrowings under the Company’s credit facility and certain cash management and hedging obligations, or (B) secured by assets that do not constitute the Collateral, in each case to the extent of the value of the assets securing such obligations; • are senior in right of payment to existing and future subordinated indebtedness of the Company and its subsidiary guarantors; • are effectively senior to all existing and future unsecured debt of the Company and its subsidiary guarantors, but only to the extent of the value of the Collateral (after giving effect to any senior liens on the Collateral); and • are structurally subordinated in right of payment to all indebtedness and other liabilities of the Company’s existing and future subsidiaries that do not guarantee the 2024 Notes. The 2024 Notes are guaranteed on a full, senior secured, joint and several basis by each of the Company’s domestic restricted subsidiaries that is a borrower under the Company’s credit facility or that guarantees any of the Company’s debt or that of any of the Company’s domestic restricted subsidiaries under the Company’s credit facility and in the future by any of the Company’s domestic restricted subsidiaries that are borrowers under any credit facility or that guarantee any debt of the Company or any of its domestic restricted subsidiaries incurred under any credit facility (the "Guarantor Subsidiaries"). The Company may redeem the 2024 Notes, in whole or in part, at any time or from time to time on or after September 15, 2020, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to September 15, 2020, the Company may redeem the 2024 Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding 2024 Notes prior to September 15, 2020, with the net cash proceeds from certain equity offerings at a redemption price equal to 106.250% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date. If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the 2024 Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The 2024 Notes were issued pursuant to an indenture dated as of September 23, 2019 (the “Indenture”). The Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates. Senior Notes Due 2021 On September 23, 2019, the Company called all outstanding 4.875% Senior Notes due 2021 (the "2021 Notes") Notes and discharged the 2021 Notes by irrevocably depositing with the 2021 Notes trustee sufficient funds to pay all principal and accrued interest through October 23, 2019. On October 23, 2019, the Company redeemed $375,000 principal amount of the 2021 Notes with the proceeds of the 2024 Notes. Senior Notes Due 2022 On June 3, 2014, the Company issued $300,000 principal amount of 5.250% Senior Notes due 2022 (the "2022 Notes"). The 2022 Notes were sold at 100% of principal amount and have an effective interest yield of 5.250% . Interest on the 2022 Notes accrues at the rate of 5.250% per annum and is payable semiannually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2014. Senior Notes Due 2025 On August 17, 2017, the Company issued $500,000 principal amount of 7.750% Senior Notes due 2025 (the "2025 Notes"). The 2025 Notes were sold at 100% of principal amount and have an effective interest yield of 7.750% . Interest on the 2025 Notes accrues at the rate of 7.750% per annum and is payable semiannually in cash in arrears on February 15 and August 15 of each year, commencing on February 15 , 2018. Financial Instruments Not Recorded at Fair Value The carrying amounts of certain of our financial instruments, including cash and cash equivalents, accounts receivable and accounts payable, approximate fair value because of their short maturities (Level 1 inputs). Carrying amounts and the related estimated fair values of the Company’s financial instruments not recorded at fair value in the condensed consolidated financial statements are as follows: December 31, 2019 March 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 1,408,688 $ 1,467,892 $ 1,488,821 $ 1,568,037 The fair value of the long-term debt was calculated based on interest rates available for debt with terms and maturities similar to the Company’s existing debt arrangements (Level 2 inputs), unless quoted market prices were available. The Company made interest payments of $60,885 and $63,261 for the nine months ended December 31, 2019 and 2018

EARNINGS PER SHARE

EARNINGS PER SHARE	9 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
EARNINGS PER SHARE	PER SHARE The following is a reconciliation between the weighted average outstanding shares used in the calculation of basic and diluted earnings per share: Three Months Ended December 31, Nine Months Ended December 31, (in thousands) (in thousands) 2019 2018 2019 2018 Weighted average common shares outstanding – basic 50,395 49,668 50,074 49,616 Net effect of dilutive stock options and non-vested stock (1) — — 517 — Weighted average common shares outstanding – diluted 50,395 49,668 50,591 49,616 (1) For the three and nine months ended December 31, 2019 and 2018 , the shares that could potentially dilute earnings per share in the future but were not included in diluted weighted average common shares outstanding because to do so would have been anti-dilutive were immaterial.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	The Company follows the Income Taxe s topic of ASC 740, which prescribes a recognition threshold and measurement attribute criteria for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return, as well as guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. The Company has classified uncertain tax positions as noncurrent income tax liabilities unless expected to be paid in one year. Penalties and tax-related interest expense are reported as a component of income tax expense and are not significant. As of December 31, 2019 and March 31, 2019 , the total amount of unrecognized tax benefits was $20,105 and $19,152 , respectively, most of which would impact the effective rate, if recognized. The Company does not anticipate that total unrecognized tax benefits will be reduced in the next 12 months. As of December 31, 2019 , the Company has a valuation allowance against principally all of its net deferred tax assets given insufficient positive evidence to support the realization of the Company’s deferred tax assets. The Company intends to continue maintaining a valuation allowance on its deferred tax assets until there is sufficient positive evidence to support the reversal of all or some portion of these allowances. A reduction in the valuation allowance could result in a significant decrease in income tax expense in the period that the release is recorded. However, the exact timing and amount of the reduction in its valuation allowance is unknown at this time and will be subject to the earnings level the Company achieves during future years. The effective income tax rate for the three months ended December 31, 2019 , was 21.0% as compared with (4.1)% for the three months ended December 31, 2018 . For the three months ended December 31, 2018 , the effective tax rate reflected a limitation on the recognition of tax benefits due to the full valuation allowance. The effective income tax rate for the nine months ended December 31, 2019 , was 21.0% as compared with (2.3)% for the nine months ended December 31, 2018 . For the nine months ended December 31, 2018 , the effective tax rate reflected a limitation on the recognition of tax benefits due to the full valuation allowance. With few exceptions, the Company is no longer subject to U.S. federal, state, or local income tax examinations for fiscal years ended before March 31, 2014, or foreign income tax examinations by tax authorities for fiscal years ended before March 31, 2013. As of December 31, 2019 , the Company is subject to examination in one state jurisdiction. The Company has filed appeals in a prior state examination related to fiscal years ended March 31, 1999 through March 31, 2005.

GOODWILL

GOODWILL	9 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL	GOODWILL The following is a summary of the changes in the carrying value of goodwill by reportable segment, from March 31, 2019 through December 31, 2019 : Integrated Systems Product Support Total Balance, March 31, 2019 $ 517,104 $ 66,121 $ 583,225 Effect of exchange rate changes 474 — 474 Balance, December 31, 2019 $ 517,578 $ 66,121 $ 583,699 As of December 31, 2019 and March 31, 2019 , Aerospace Structures had goodwill of $1,246,454 , which was fully impaired.

PENSION AND OTHER POSTRETIREMEN

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS	9 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS	PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS The Company sponsors several defined benefit pension plans covering some of its employees. Certain employee groups are ineligible to participate in the plans or have ceased to accrue additional benefits under the plans based upon their service to the Company or years of service accrued under the defined benefit pension plans. Benefits under the defined benefit plans are based on years of service and, for most non-represented employees, on average compensation for certain years. It is the Company’s policy to fund at least the minimum amount required for all qualified plans, using actuarial cost methods and assumptions acceptable under U.S. government regulations (and for non-U.S. plans, acceptable under local regulations), by making payments into a separate trust. The Company contributed 1,730,703 shares of common stock to this separate trust with an aggregate contribution value of approximately $50,000 on the contribution date. As a result of the contribution, the Company does not expect that it will have any required contribution to the Trust for the fiscal year ending March 31, 2021. In addition to the defined benefit pension plans, the Company provides certain healthcare and life insurance benefits for eligible retired employees. Such benefits are unfunded. Employees achieve eligibility to participate in these contributory plans upon retirement from active service if they meet specified age and years of service requirements. Election to participate for some employees must be made at the date of retirement. Qualifying dependents at the date of retirement may also be eligible for medical coverage. Current plan documents reserve the right to amend or terminate the plans at any time, subject to applicable collective bargaining requirements for represented employees. From time to time, changes have been made to the benefits provided to various groups of plan participants. Premiums charged to most retirees for medical coverage prior to age 65 are based on years of service and are adjusted annually for changes in the cost of the plans as determined by an independent actuary. In addition to this medical inflation cost-sharing feature, the plans also have provisions for deductibles, co-payments, coinsurance percentages, out-of-pocket limits, schedules of reasonable fees, preferred provider networks, coordination of benefits with other plans and a Medicare carve-out. In accordance with the Compensation – Retirement Benefits topic of ASC 715, the Company has recognized the funded status of the benefit obligation as of the date of the last re-measurement, on the accompanying condensed consolidated balance sheets. The funded status is measured as the difference between the fair value of the plan’s assets and the pension benefit obligation or accumulated postretirement benefit obligation, of the plan. In order to recognize the funded status, the Company determined the fair value of the plan assets. The majority of the plan assets are publicly traded investments, which were valued based on the market price as of the date of re-measurement. Investments that are not publicly traded were valued based on the estimated fair value of those investments based on our evaluation of data from fund managers and comparable market data. Net Periodic Benefit Plan Costs The components of net periodic benefit costs (income) for our postretirement benefit plans are shown in the following table: Pension Benefits Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Components of net periodic benefit costs: Service cost $ 577 $ 822 $ 1,758 $ 2,476 Interest cost 16,073 19,905 52,162 59,736 Expected return on plan assets (35,210 ) (37,065 ) (106,566 ) (111,246 ) Amortization of prior service credits (183 ) (907 ) (695 ) (2,722 ) Amortization of net loss 7,752 4,179 19,444 12,538 Curtailment loss — — 23,476 — Special termination benefits — — 11,642 — Net periodic benefit (income) expense $ (10,991 ) $ (13,066 ) $ 1,221 $ (39,218 ) Other Postretirement Benefits Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Components of net periodic benefit costs: Service cost $ — $ 57 $ 62 $ 170 Interest cost 41 1,010 1,519 3,029 Amortization of prior service credits (1,276 ) (1,164 ) (3,596 ) (3,491 ) Amortization of gain (1,186 ) (2,463 ) (5,175 ) (7,389 ) Curtailment gain — — (49,491 ) — Net periodic benefit income $ (2,421 ) $ (2,560 ) $ (56,681 ) $ (7,681 ) The following summarizes the key events whose effects on net periodic benefit cost and obligations are included in the tables above: • In September 2019, the Company ratified amendments to its pension and retiree welfare plans with a group of union-represented employees at the Company’s Grand Prairie, TX, facility in conjunction with an announced shutdown of this facility. Effective April 1, 2020, all current retiree welfare benefits for the union-represented retirees and active employees will cease. A new benefit consisting of a one-time credit to Heath Reimbursement Accounts for the current retirees will be provided. The Company and the union also agreed to increased pension benefits which are effective with the ratification of the agreement. This agreement resulted in a decrease of the projected other post-employment benefits ("OPEB") benefit obligation of $61,766 . It also resulted in a one-time OPEB curtailment gain of $41,128 . As a result of the planned shutdown, subsidized early retirement provisions within the retirement plan and the agreed-to pension benefit increases, a pension curtailment loss of $23,476 was recognized, along with a one-time charge of $11,642 for special termination benefits. The net curtailment gain and charge for special termination benefits are included in "Non-service defined benefit income" on the condensed consolidated statement of operations for the nine months ended December 31, 2019. • In August 2019, the Company ratified amendments to its pension and retiree welfare plans with a group of union-represented employees at the Company’s Nashville, TN, facility. Effective January 1, 2020, all current retiree welfare benefits for the union-represented retirees and active employees will cease. A new benefit consisting of a one-time credit to Heath Reimbursement Accounts for the current retirees will be provided. The Company and the union also agreed to increased pension benefits which are effective on February 1, 2020, and the union also agreed to increased pension benefits which are effective with the ratification of the agreement. This agreement resulted in a decrease of the projected OPEB benefit obligation of $34,731 . It also resulted in a one-time OPEB curtailment gain of $8,363 . The agreed-to pension benefit increases resulted in an increase of the projected pension benefit obligation of $4,898 . The curtailment gain is included in "Non-service defined benefit income" on the condensed consolidated statement of operations for the nine months ended December 31, 2019.

STOCKHOLDERS' EQUITY STOCKHOLDE

STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY	9 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	STOCKHOLDERS' EQUITY Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive income (loss) ("AOCI") by component for the three and nine months ended December 31, 2019 and 2018 , respectively, were as follows: Currency Translation Adjustment Unrealized Gains and Losses on Derivative Instruments Defined Benefit Pension Plans and Other Postretirement Benefits Total (1) Balance, September 30, 2019 $ (57,516 ) $ (2,527 ) $ (505,858 ) $ (565,901 ) AOCI before reclassifications 11,074 4,581 — 15,655 Amounts reclassified from AOCI — (80 ) 5,027 4,947 Net current period AOCI $ 11,074 $ 4,501 $ 5,027 $ 20,602 Balance, December 31, 2019 $ (46,442 ) $ 1,974 $ (500,831 ) $ (545,299 ) Balance, September 30, 2018 (72,169 ) 51 (310,107 ) (382,225 ) AOCI before reclassifications (7,725 ) 47 (399 ) (8,077 ) Amounts reclassified from AOCI — (327 ) — (327 ) Net current period AOCI $ (7,725 ) $ (280 ) $ (399 ) $ (8,404 ) Balance, December 31, 2018 $ (79,894 ) $ (229 ) $ (310,506 ) $ (390,629 ) Balance, March 31, 2019 (48,606 ) (1,130 ) (437,948 ) (487,684 ) AOCI before reclassifications 2,164 4,921 (122,971 ) (115,886 ) Amounts reclassified from AOCI — (1,817 ) 60,088 58,271 Net current period AOCI $ 2,164 $ 3,104 $ (62,883 ) $ (57,615 ) Balance, December 31, 2019 $ (46,442 ) $ 1,974 $ (500,831 ) $ (545,299 ) Balance, March 31, 2018 $ (58,683 ) $ 122 $ (309,309 ) $ (367,870 ) AOCI before reclassifications (21,211 ) 787 (1,197 ) (21,621 ) Amounts reclassified from AOCI — (1,138 ) — (1,138 ) Net current period AOCI (21,211 ) (351 ) (1,197 ) (22,759 ) Balance, December 31, 2018 $ (79,894 ) $ (229 ) $ (310,506 ) $ (390,629 ) (1) Net of tax.

SEGMENTS

SEGMENTS	9 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
SEGMENTS	SEGMENTS The Company reports financial performance based on the following three reportable segments: Integrated Systems, Aerospace Structures and Product Support. The Company’s reportable segments are aligned with how the business is managed, and the Company's views of the markets it serves. The Chief Operating Decision Maker (the “CODM”) evaluates performance and allocates resources based upon review of segment information. The CODM utilizes earnings before interest, income taxes, depreciation and amortization, and pension (“Adjusted EBITDAP”) as a primary measure of segment profitability to evaluate performance of its segments and allocate resources. Segment Adjusted EBITDAP is total segment revenue reduced by revenue from the amortization of contract liabilities, operating expenses (less depreciation and amortization, gains and losses on the sale of assets, and certain nonrecurring transactions such as gains and losses associated with pension curtailments and related transactions) identifiable with that segment. Corporate includes general corporate administrative costs, and any other costs not identifiable with one of the Company’s segments, adjusted for gains and losses on the sale of businesses and certain nonrecurring transactions such as gains and losses from legal contingencies. The Company does not accumulate net sales information by product or service or groups of similar products and services and, therefore, the Company does not disclose net sales by product or service because to do so would be impracticable. Selected financial information for each reportable segment is as follows: Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Net sales: Integrated Systems $ 275,248 $ 252,437 $ 813,454 $ 754,193 Aerospace Structures 368,972 490,337 1,210,729 1,551,090 Product Support 63,978 71,446 193,127 209,860 Elimination of inter-segment sales (3,532 ) (6,325 ) (10,303 ) (19,240 ) $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903 Income (loss) before income taxes: Operating income (loss): Integrated Systems $ 47,896 $ 39,947 $ 134,140 $ 115,221 Aerospace Structures 18,039 (49,813 ) 43,930 (152,143 ) Product Support 9,538 11,421 29,680 30,604 Corporate (70,857 ) (15,222 ) (101,296 ) (70,655 ) Share-based compensation expense (2,955 ) (3,266 ) (8,245 ) (8,509 ) 1,661 (16,933 ) 98,209 (85,482 ) Non-service defined benefit income (13,989 ) (16,520 ) (57,280 ) (49,581 ) Interest expense and other 33,178 29,309 96,069 83,515 $ (17,528 ) $ (29,722 ) $ 59,420 $ (119,416 ) Depreciation and amortization: Integrated Systems $ 6,992 $ 7,376 $ 21,042 $ 22,316 Aerospace Structures 20,921 27,673 77,265 84,888 Product Support 1,083 1,611 3,272 4,944 Corporate 847 744 2,533 2,201 $ 29,843 $ 37,404 $ 104,112 $ 114,349 Amortization of acquired contract liabilities, net: Integrated Systems $ 8,377 $ 8,172 $ 26,126 $ 25,789 Aerospace Structures 8,220 6,559 30,027 22,980 $ 16,597 $ 14,731 $ 56,153 $ 48,769 Adjusted EBITDAP: Integrated Systems $ 46,511 $ 39,151 $ 129,056 $ 111,748 Aerospace Structures 32,140 (28,699 ) 88,118 (2,994 ) Product Support 10,621 13,032 32,952 35,548 Corporate and share-based compensation (16,803 ) (17,744 ) (50,954 ) (59,126 ) $ 72,469 $ 5,740 $ 199,172 $ 85,176 Capital expenditures: Integrated Systems $ 2,974 $ 3,951 $ 9,734 $ 9,388 Aerospace Structures 5,910 5,722 13,915 22,937 Product Support 955 852 2,621 1,871 Corporate 416 45 980 628 $ 10,255 $ 10,570 $ 27,250 $ 34,824 December 31, 2019 March 31, 2019 Total Assets: Integrated Systems $ 1,277,654 $ 1,215,350 Aerospace Structures 1,005,460 1,257,039 Product Support 276,717 271,813 Corporate 65,555 110,372 $ 2,625,386 $ 2,854,574 During the three months ended December 31, 2019 and 2018 , the Company had international sales of $164,832 and $245,505 , respectively. During the nine months ended December 31, 2019 and 2018 , the Company had international sales of $526,130 and $736,501 , respectively.

SELECTED CONSOLIDATING FINANCIA

SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS	9 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS	SELECTED CONDENSED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS The 2022 Notes, the 2024 Notes, and the 2025 Notes are fully and unconditionally guaranteed on a joint and several basis by the Guarantor Subsidiaries. The total assets, stockholders' equity, revenue, earnings and cash flows from operating activities of the Guarantor Subsidiaries exceeded a majority of the consolidated total of such items as of and for the periods reported. The only consolidated subsidiaries of the Company that are not guarantors of the 2022 Notes, the 2024 Notes, and the 2025 Notes (the “Non-Guarantor Subsidiaries”) are (a) the receivables securitization special-purpose entity and (b) the foreign operating subsidiaries. The following tables present condensed consolidating financial statements, including the Company (the “Parent”), the Guarantor Subsidiaries, and the Non-Guarantor Subsidiaries. Such financial statements include summary condensed consolidating balance sheets as of December 31, 2019 and March 31, 2019 , condensed consolidating statements of comprehensive income for the three and nine months ended December 31, 2019 and 2018 , and condensed consolidating statements of cash flows for the nine months ended December 31, 2019 and 2018 . SUMMARY CONDENSED CONSOLIDATING BALANCE SHEETS: December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Current assets: Cash and cash equivalents $ 19,319 $ — $ 34,275 $ — $ 53,594 Trade and other receivables, net 8,391 85,193 207,146 — 300,730 Contract assets — 237,383 4,492 — 241,875 Inventory, net — 393,159 80,704 — 473,863 Prepaid expenses and other 12,031 7,330 6,772 — 26,133 Total current assets 39,741 723,065 333,389 — 1,096,195 Property and equipment, net 10,227 343,902 79,346 — 433,475 Goodwill and other intangible assets, net — 877,509 100,972 — 978,481 Other, net 27,536 59,031 30,668 — 117,235 Intercompany investments and advances 1,353,361 44,362 89,687 (1,487,410 ) — Total assets $ 1,430,865 $ 2,047,869 $ 634,062 $ (1,487,410 ) $ 2,625,386 Current liabilities: Current portion of long-term debt $ 1,900 $ 5,888 $ 7 $ — $ 7,795 Accounts payable 5,301 343,977 30,711 — 379,989 Accrued expenses 52,940 411,624 30,964 — 495,528 Total current liabilities 60,141 761,489 61,682 — 883,312 Long-term debt, less current portion 1,319,259 6,616 75,018 — 1,400,893 Intercompany advances 562,434 1,827,108 262,188 (2,651,730 ) — Accrued pension and other postretirement benefits, noncurrent 5,889 490,395 — — 496,284 Deferred income taxes and other 16,039 331,845 29,910 — 377,794 Total stockholders’ (deficit) equity (532,897 ) (1,369,584 ) 205,264 1,164,320 (532,897 ) Total liabilities and stockholders’ (deficit) equity $ 1,430,865 $ 2,047,869 $ 634,062 $ (1,487,410 ) $ 2,625,386 SUMMARY CONDENSED CONSOLIDATING BALANCE SHEETS: March 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Current assets: Cash and cash equivalents $ 70,192 $ 429 $ 22,186 $ — $ 92,807 Trade and other receivables, net 10,150 123,153 240,287 — 373,590 Contract assets — 322,698 3,969 — 326,667 Inventory, net — 339,038 74,522 — 413,560 Prepaid expenses and other 22,152 7,611 4,683 — 34,446 Total current assets 102,494 792,929 345,647 — 1,241,070 Property and equipment, net 11,276 449,489 82,945 — 543,710 Goodwill and other intangible assets, net — 912,279 101,900 — 1,014,179 Other, net 14,630 34,664 6,321 — 55,615 Intercompany investments and advances 1,112,100 230,437 88,697 (1,431,234 ) — Total assets $ 1,240,500 $ 2,419,798 $ 625,510 $ (1,431,234 ) $ 2,854,574 Current liabilities: Current portion of long-term debt $ 1,904 $ 6,297 $ — $ — $ 8,201 Accounts payable 6,571 396,542 30,670 — 433,783 Accrued expenses 58,301 445,542 29,448 — 533,291 Total current liabilities 66,776 848,381 60,118 — 975,275 Long-term debt, less current portion 1,469,543 11,077 — — 1,480,620 Intercompany advances 262,718 2,017,003 372,888 (2,652,609 ) — Accrued pension and other postretirement benefits, noncurrent 6,067 534,412 — — 540,479 Deferred income taxes and other 8,709 408,838 13,966 — 431,513 Total stockholders’ (deficit) equity (573,313 ) (1,399,913 ) 178,538 1,221,375 (573,313 ) Total liabilities and stockholders’ (deficit) equity $ 1,240,500 $ 2,419,798 $ 625,510 $ (1,431,234 ) $ 2,854,574 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Three Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 646,198 $ 79,869 $ (21,401 ) $ 704,666 Operating costs and expenses: Cost of sales — 505,420 62,263 (21,401 ) 546,282 Selling, general and administrative 16,785 42,854 6,335 — 65,974 Depreciation and amortization 847 26,089 2,907 — 29,843 Restructuring costs — 4,744 — — 4,744 Loss on sale of assets and businesses, net 60,019 — — — 60,019 Legal judgment gain, net (3,857 ) — — — (3,857 ) 73,794 579,107 71,505 (21,401 ) 703,005 Operating (loss) income (73,794 ) 67,091 8,364 — 1,661 Intercompany interest and charges (33,662 ) 32,005 1,657 — — Non-service defined benefit income — (13,485 ) (504 ) — (13,989 ) Interest expense and other, net 26,362 5,871 945 — 33,178 (Loss) income before income taxes (66,494 ) 42,700 6,266 — (17,528 ) Income tax (benefit) expense (15,067 ) 10,319 1,066 — (3,682 ) Net (loss) income (51,427 ) 32,381 5,200 — (13,846 ) Other comprehensive loss 4,501 4,617 11,484 — 20,602 Total comprehensive (loss) income $ (46,926 ) $ 36,998 $ 16,684 $ — $ 6,756 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Three Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 735,753 $ 91,528 $ (19,386 ) $ 807,895 Operating costs and expenses: Cost of sales — 660,002 72,658 (19,386 ) 713,274 Selling, general and administrative 17,720 46,033 8,070 — 71,823 Depreciation and amortization 744 32,640 4,020 — 37,404 Restructuring costs — 2,327 — — 2,327 18,464 741,002 84,748 (19,386 ) 824,828 Operating (loss) income (18,464 ) (5,249 ) 6,780 — (16,933 ) Intercompany interest and charges (39,513 ) 37,484 2,029 — — Non-service defined benefit income — (16,188 ) (332 ) — (16,520 ) Interest expense and other, net 25,476 4,007 (174 ) — 29,309 (Loss) income before income taxes (4,427 ) (30,552 ) 5,257 — (29,722 ) Income tax (benefit) expense (14,248 ) 14,325 1,146 — 1,223 Net income (loss) 9,821 (44,877 ) 4,111 — (30,945 ) Other comprehensive loss (279 ) (174 ) (7,951 ) — (8,404 ) Total comprehensive income (loss) $ 9,542 $ (45,051 ) $ (3,840 ) $ — $ (39,349 ) CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Nine Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 2,027,649 $ 243,361 $ (64,003 ) $ 2,207,007 Operating costs and expenses: Cost of sales — 1,625,567 189,187 (64,003 ) 1,750,751 Selling, general and administrative 50,340 123,664 20,508 — 194,512 Depreciation and amortization 2,532 93,109 8,471 — 104,112 Restructuring costs 540 12,950 — — 13,490 Legal judgment gain, net of expenses (9,257 ) — — — (9,257 ) Loss (gain) on sale of assets and businesses, net 65,311 (10,121 ) — — 55,190 109,466 1,845,169 218,166 (64,003 ) 2,108,798 Operating (loss) income (109,466 ) 182,480 25,195 — 98,209 Intercompany interest and charges (103,245 ) 98,297 4,948 — — Non-service defined benefit income — (55,788 ) (1,492 ) — (57,280 ) Interest expense and other, net 80,016 17,423 (1,370 ) — 96,069 (Loss) income before income taxes (86,237 ) 122,548 23,109 — 59,420 Income tax (benefit) expense (20,635 ) 30,398 2,714 — 12,477 Net (loss) income (65,602 ) 92,150 20,395 — 46,943 Other comprehensive income (loss) 3,105 (62,995 ) 2,275 — (57,615 ) Total comprehensive (loss) income $ (62,497 ) $ 29,155 $ 22,670 $ — $ (10,672 ) CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Nine Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 2,286,932 $ 268,808 $ (59,837 ) $ 2,495,903 Operating costs and expenses: Cost of sales — 2,052,427 215,372 (59,837 ) 2,207,962 Selling, general and administrative 57,210 140,892 24,929 — 223,031 Depreciation and amortization 2,200 99,302 12,847 — 114,349 Restructuring costs 2,766 15,440 — — 18,206 Loss on sale of assets and businesses, net 16,890 947 — — 17,837 79,066 2,309,008 253,148 (59,837 ) 2,581,385 Operating (loss) income (79,066 ) (22,076 ) 15,660 — (85,482 ) Intercompany interest and charges (118,352 ) 112,281 6,071 — — Non-service defined benefit income — (48,562 ) (1,019 ) — (49,581 ) Interest expense and other, net 73,855 13,334 (3,674 ) — 83,515 (Loss) income before income taxes (34,569 ) (99,129 ) 14,282 — (119,416 ) Income tax expense (benefit) 16,297 (15,761 ) 2,203 — 2,739 Net (loss) income (50,866 ) (83,368 ) 12,079 — (122,155 ) Other comprehensive loss (349 ) (609 ) (21,801 ) — (22,759 ) Total comprehensive loss $ (51,215 ) $ (83,977 ) $ (9,722 ) $ — $ (144,914 ) CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS: For the Nine Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net (loss) income $ (65,602 ) $ 92,150 $ 20,395 $ — $ 46,943 Adjustments to reconcile net income to net cash (used in) provided by operating activities (35,640 ) (2,285 ) 30,270 — (7,655 ) Net cash (used in) provided by operating activities (101,242 ) 89,865 50,665 — 39,288 Capital expenditures (980 ) (22,874 ) (3,396 ) — (27,250 ) Proceeds from sale of assets 44,414 5,155 387 — 49,956 Net cash used in investing activities 43,434 (17,719 ) (3,009 ) — 22,706 Net increase in revolving credit facility (215,000 ) — — — (215,000 ) Proceeds on issuance of debt 525,000 — 45,980 — 570,980 Retirements and repayments of debt (376,665 ) (4,852 ) (51,680 ) — (433,197 ) Payments of deferred financing costs (17,545 ) — — — (17,545 ) Dividends paid (6,005 ) — — — (6,005 ) Repurchase of restricted shares for minimum tax obligation (1,179 ) — — — (1,179 ) Intercompany financing and advances 98,329 (67,723 ) (30,606 ) — — Net cash provided by (used in) financing activities 6,935 (72,575 ) (36,306 ) — (101,946 ) Effect of exchange rate changes on cash — — 739 — 739 Net change in cash and cash equivalents (50,873 ) (429 ) 12,089 — (39,213 ) Cash and cash equivalents at beginning of period 70,192 429 22,186 — 92,807 Cash and cash equivalents at end of period $ 19,319 $ — $ 34,275 $ — $ 53,594 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS: For the Nine Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net (loss) income $ (50,866 ) $ (83,368 ) $ 12,079 $ — $ (122,155 ) Adjustments to reconcile net income to net cash (used in) provided by operating activities 38,356 (154,793 ) 27,597 17,879 (70,961 ) Net cash (used in) provided by operating activities (12,510 ) (238,161 ) 39,676 17,879 (193,116 ) Capital expenditures (628 ) (30,398 ) (3,798 ) — (34,824 ) Proceeds from sale of assets — 40,235 1,182 — 41,417 Net cash (used in) provided by investing activities (628 ) 9,837 (2,616 ) — 6,593 Net increase in revolving credit facility 218,066 — — — 218,066 Proceeds on issuance of debt — — 45,000 — 45,000 Retirements and repayments of debt (1,091 ) (15,120 ) (56,800 ) — (73,011 ) Payments of deferred financing costs (1,941 ) — — — (1,941 ) Dividends paid (5,975 ) — — — (5,975 ) Repurchase of restricted shares for minimum tax obligations (645 ) — — — (645 ) Intercompany financing and advances (195,320 ) 243,505 (30,306 ) (17,879 ) — Net cash provided by (used in) financing activities 13,094 228,385 (42,106 ) (17,879 ) 181,494 Effect of exchange rate changes on cash — — (2,126 ) — (2,126 ) Net change in cash and cash equivalents (44 ) 61 (7,172 ) — (7,155 ) Cash and cash equivalents at beginning of period 44 — 35,775 — 35,819 Cash and cash equivalents at end of period $ — $ 61 $ 28,603 $ — $ 28,664

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Dec. 31, 2019
Commitments and Contingencies [Abstract]
Commitments and Contingencies Disclosure [Text Block]	COMMITMENTS AND CONTINGENCIES In the ordinary course of business, the Company is involved in disputes, claims and lawsuits with employees, suppliers and customers, as well as governmental and regulatory inquiries, that it deems to be immaterial. Some may involve claims or potential claims of substantial damages, fines, penalties or injunctive relief. While the Company cannot predict the outcome of any pending or future litigation or proceeding and no assurances can be given, the Company does not believe that any pending matter will have a material effect, individually or in the aggregate, on its financial position or results of operations. In the nine months ended December 31, 2019, the Company was awarded $9,257 in a legal judgment associated with a longstanding litigation matter arising from a prior acquisition. As the Company completes its restructuring plans as disclosed in Note 16, including the disposal of certain facilities, the Company may be exposed to additional costs such as environmental remediation obligations, lease termination costs, or supplier claims which may have a material effect on its financial position or results of operations when such matters arise and a reasonable estimate of the costs can be made.

Specific Accounting Policies

Specific Accounting Policies	9 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition The Company's revenue is principally from contracts with customers to provide design, development, manufacturing, and support services associated with specific customer programs. The Company regularly enters into long-term master supply agreements that establish general terms and conditions and may define specific program requirements. Many agreements include clauses that provide sole supplier status to the Company for the duration of the program’s life. Purchase orders (or authorizations to proceed) are issued pursuant to the master supply agreements. Additionally, a majority of the Company’s agreements with customers include options for future purchases. Such options primarily reduce the administrative effort of issuing subsequent purchase orders and do not represent material rights granted to customers. The Company generally enters into agreements directly with its customers and is the principal in all current contracts. The identification of a contract with a customer for purposes of accounting and financial reporting requires an evaluation of the terms and conditions of agreements to determine whether presently enforceable rights and obligations exist. Management considers a number of factors when making this evaluation that include, but are not limited to, the nature and substance of the business exchange, the specific contractual terms and conditions, the promised products and services, the termination provisions in the contract, as well as the nature and execution of the customer’s ordering process and how the Company is authorized to perform work. Generally, presently enforceable rights and obligations are not created until a purchase order is issued by a customer for a specified number of units of product or services. Therefore, the issuance of a purchase order is generally the point at which a contract is identified for accounting and financial reporting purposes. Management identifies the promises to the customer. Promises are generally explicitly stated in each contract, but management also evaluates whether any promises are implied based on the terms of the agreement, past business practice, or other facts and circumstances. Each promise is evaluated to determine if it is a performance obligation. A performance obligation is a promise in a contract to transfer a distinct good or service. The Company considers a number of factors when determining whether a promise is a performance obligation, including whether the customer can benefit from the good or service on its own or together with other resources that are readily available to the customer, whether the Company provides a significant service of integrating goods or services to deliver a combined output to the customer, or whether the goods or services are highly interdependent. The Company’s performance obligations consist of a wide range of engineering design services and manufactured components, as well as spare parts and repairs for original equipment manufacturers ("OEMs"). The transaction price for a contract reflects the consideration the Company expects to receive for fully satisfying the performance obligations in the contract. Typically, the transaction price consists solely of fixed consideration but may include variable consideration for contractual provisions such as unpriced contract modifications, cost-sharing provisions, and other receipts or payments to customers. The Company identifies and estimates variable consideration, typically at the most likely amount the Company expects to receive from its customers. Variable consideration is only included in the transaction price to the extent it is probable that a significant reversal of cumulative revenue recognized for the contract will not occur, or when the uncertainty associated with the variable consideration is resolved. The Company's contracts with customers generally require payment under normal commercial terms after delivery with payment typically required within 30 to 120 days of delivery. However, a subset of the Company’s current contracts includes significant financing components because the timing of the transfer of the underlying products and services under contract are at the customers’ discretion. For these contracts, the Company adjusts the transaction price to reflect the effects of the time value of money. The Company generally is not subject to collecting sales tax and has made an accounting policy election to exclude from the transaction price any sales and other similar taxes collected from customers. As a result, any such collections are accounted for on a net basis. The total transaction price is allocated to each of the identified performance obligations using the relative stand-alone selling price. The objective of the allocation is to reflect the consideration that the Company expects to receive in exchange for the products or services associated with each performance obligation. Stand-alone selling price is the price at which the Company would sell a promised good or service separately to a customer. Stand-alone selling prices are established at contract inception, and subsequent changes in transaction price are allocated on the same basis as at contract inception. When stand-alone selling prices for the Company’s products and services are not observable, the Company uses either the “Expected Cost Plus a Margin” or "Adjusted Market Assessment" approaches to estimate stand-alone selling price. Expected costs are typically derived from the available periodic forecast information. Revenue is recognized when or as control of promised products or services transfers to a customer and is recognized at the amount allocated to each performance obligation associated with the transferred products or services. Service sales, principally representing repair, maintenance, and engineering activities are recognized over the contractual period or as services are rendered. Sales under long-term contracts with performance obligations satisfied over time are recognized using either an input or output method. The Company recognizes revenue over time as it performs on these contracts because of the continuous transfer of control to the customer as represented by work that is performed on a customer-owned asset or by contractual terms that entitle the Company to the reimbursement of costs plus a reasonable profit for work performed to manufacture products for which the Company has no alternate use. With control transferring over time, revenue is recognized based on the extent of progress toward completion of the performance obligation. The Company generally uses the cost-to-cost input method of progress for our contracts because it best depicts the transfer of control to the customer that occurs as work progresses. Under the cost-to-cost method, the extent of progress toward completion is measured based on the proportion of costs incurred to date to the total estimated costs at completion of the performance obligation. The Company reviews its cost estimates on significant contracts on a periodic basis, or when circumstances change and warrant a modification to a previous estimate. Cost estimates are largely based on negotiated or estimated purchase contract terms, historical performance trends and other economic projections. Significant factors that influence these estimates include inflationary trends, technical and schedule risk, internal and subcontractor performance trends, business volume assumptions, asset utilization, and anticipated labor agreements. Revenue and cost estimates are regularly monitored and revised based on changes in circumstances. Impacts from changes in estimates of net sales and cost of sales are recognized on a cumulative catch-up basis, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a performance obligation’s percentage of completion. Forward loss reserves for anticipated losses on long-term contracts are recorded in full when such losses become evident, to the extent required, and are included in contract liabilities on the accompanying consolidated balance sheets. For the three months ended December 31, 2019 , cumulative catch-up adjustments from changes in estimates, including changes in forward loss estimates, increased net sales by approximately $4,722 and decreased operating income, net income, and earnings per share by approximately $(210) , $(166) and $0.00 , net of tax, respectively. For the three months ended December 31, 2018 , cumulative catch-up adjustments from changes in estimates increased net sales by approximately $674 and increased operating loss, net loss, and loss per share by approximately $(47,028) , $(47,028) and $(0.95) , net of tax, respectively. For the nine months ended December 31, 2019 , cumulative catch-up adjustments from changes in estimates, including changes in forward loss estimates, increased net sales by approximately $2,347 and decreased operating income, net income, and earnings per share by approximately $(16,393) , $(12,950) and $(0.26) , net of tax, respectively. For the nine months ended December 31, 2018 , cumulative catch-up adjustments from changes in estimates decreased net sales by approximately $(5,632) and increased operating loss, net loss, and loss per share by approximately $(59,407) , $(59,407) and $(1.20) , net of tax, respectively. The fiscal year 2019 cumulative catch-up adjustments do not include a non-cash charge the Company recorded as a result of the adoption of ASU 2017-07 of $87,241 due to a change in estimate inseparable from a change in accounting principles, which is presented on the accompanying consolidated statements of operations within cost of sales. Revenues for performance obligations that are not recognized over time are recognized at the point in time when control transfers to the customer. For performance obligations that are satisfied at a point in time, the Company evaluates the point in time when the customer can direct the use of and obtain the benefits from the products and services. Generally, the shipping terms determine the point in time when control transfers to customers. Shipping and handling activities are not considered performance obligations and related costs are included in cost of sales as incurred. Differences in the timing of revenue recognition and contractual billing and payment terms result in the recognition contract assets and liabilities. Refer to Note 4 for further discussion. The portion of the Company's revenue resulting from transactions other than contracts with customers pertains to the non-cash amortization of acquired contract liabilities that were recognized as fair value adjustments through purchase accounting from various acquisitions.
Lessee, Leases [Policy Text Block]	Leases The Company leases office space, manufacturing facilities, land, vehicles, and equipment. The Company determines if an agreement is or contains a lease at the lease inception date and recognizes right-of-use assets and lease liabilities at the lease commencement date. A ROU asset and corresponding lease liability are not recorded for leases with an initial term of 12 months or less (short-term leases). ROU assets represent the Company's right to use an underlying asset during the lease term, and lease liabilities represent the Company's obligation to make lease payments arising from the lease. The determination of the length of lease terms is affected by options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. The existence of significant economic incentive is the primary consideration when assessing whether the Company is reasonably certain of exercising an option in a lease. Both finance and operating lease ROU assets and liabilities are recognized at commencement date and measured as the present value of lease payments to be made over the lease term. As the interest rate implicit in the lease is not readily available for most of the Company's leases, the Company uses its estimated incremental borrowing rate in determining the present value of lease payments. The estimated incremental borrowing rate is derived from information available at the lease commencement date. The lease ROU asset recognized at commencement is adjusted for any lease payments related to initial direct costs, prepayments, and lease incentives. For operating leases, lease expense is recognized on a straight-line basis over the lease term. For finance leases, lease expense comprises the amortization of the ROU assets recognized on a straight-line basis generally over the shorter of the lease term or the estimated useful life of the underlying asset and interest on the lease liability. Variable lease payments not dependent on a rate or index are recognized when the event, activity, or circumstance in the lease agreement upon which those payments are contingent is probable of occurring and are presented in the same line of the consolidated balance sheet as the rent expense arising from fixed payments. The Company has lease agreements with lease and non-lease components. Non-lease components are combined with the related lease components and accounted for as lease components for all classes of underlying assets. 5. LEASES The components of lease expense for the nine months ended December 31, 2019 , are disclosed in the table below. Lease Cost Financial Statement Classification Nine Months Ended December 31, 2019 Operating lease cost Cost of sales or Selling, general and administrative expense $ 17,829 Variable lease cost Cost of sales or Selling, general and administrative expense 5,892 Financing Lease Cost: Amortization of right-of-use assets Depreciation and amortization 4,224 Interest on lease liability Interest expense and other 1,579 Total lease cost (1) $ 29,524 (1) Total lease cost does not include short-term leases or sublease income, both of which are immaterial. Supplemental cash flow information for the nine months ended December 31, 2019 , is disclosed in the table below. Nine Months Ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used in operating leases $ 14,046 Operating cash flows used in finance leases 1,600 Financing cash flows used in finance leases 6,516 ROU assets obtained in exchange for lease liabilities Operating leases $ 2,569 Finance leases 811 Supplemental balance sheet information related to leases as of December 31, 2019 , is disclosed in the table below. Leases Classification December 31, 2019 Assets Operating lease ROU assets Other, net $ 66,578 Finance lease ROU assets, cost Property and equipment, net 39,364 Accumulated amortization Property and equipment, net (17,557 ) Finance lease ROU assets, net 21,807 Total lease assets $ 88,385 Liabilities Current Operating Accrued expenses $ 14,028 Finance Current portion of long-term debt 7,795 Noncurrent Operating Other noncurrent liabilities 58,152 Finance Long-term debt, less current portion 18,172 Total lease liabilities $ 98,147 Information related to lease terms and discount rates as of December 31, 2019 , is disclosed in the table below: December 31, 2019 Weighted average remaining lease term (years) Operating leases 7.2 Finance leases 6.7 Weighted average discount rate Operating leases 6.4 % Finance leases 5.8 % The maturity of the Company's lease liabilities as of December 31, 2019 , is disclosed in the table below. Operating leases Finance leases Total FY2020 (remaining of year) $ 7,359 $ 2,348 $ 9,707 FY2021 16,753 8,786 25,539 FY2022 14,451 5,751 20,202 FY2023 11,021 2,873 13,894 FY2024 8,322 2,112 10,434 Thereafter 35,810 11,263 47,073 Total lease payments 93,716 33,133 126,849 Less: Imputed interest (21,536 ) (7,166 ) (28,702 ) Total lease liabilities $ 72,180 $ 25,967 $ 98,147
Concentration of Credit Risk	Concentration of Credit Risk The Company’s trade and other accounts receivable are exposed to credit risk. However, the risk is limited due to the diversity of the customer base and the customer base’s wide geographical area. Trade accounts receivable from The Boeing Company ("Boeing") (representing commercial, military and space) represented approximately 15% and 18% of total trade accounts receivable as of December 31, 2019 and March 31, 2019 , respectively. Trade accounts receivable from Gulfstream Aerospace Corporation ("Gulfstream") represented approximately 4% and 11% of total trade accounts receivable as of December 31, 2019 and March 31, 2019 , respectively. Trade and other accounts receivable from Bombardier Inc. ("Bombardier") include receivables from transition services and represented approximately 12% and 13% as of December 31, 2019 and March 31, 2019 , respectively. The Company had no other concentrations of credit risk of more than 10% . Sales to Boeing for the nine months ended December 31, 2019 , were $742,495 , or 34% of net sales, of which $172,438 , $552,641 , and $17,416 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Boeing for the nine months ended December 31, 2018 , were $761,952 , or 31% of net sales, of which $167,870 , $583,971 and $10,111 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Gulfstream for the nine months ended December 31, 2019 , were $268,917 , or 12% of net sales, of which $1,658 , $266,421 , and $838 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. Sales to Gulfstream for the nine months ended December 31, 2018 , were $261,880 , or 10% of net sales, of which $1,585 , $259,812 , and $483 were from the Integrated Systems, Aerospace Structures and Product Support, respectively. No other single customer accounted for more than 10% of the Company’s net sales. However, the loss of any significant customer, including Boeing and Gulfstream, could have a material adverse effect on the Company and its operating subsidiaries.
Intangibles policy [Policy Text Block]
Fair Value Measurement, Policy [Policy Text Block]	Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. When determining fair value measurements for assets and liabilities required to be recorded at fair value, the Company considers the principal or most advantageous market in which it would transact and also considers assumptions that market participants would use when pricing an asset or liability. The fair value hierarchy has three levels of inputs that may be used to measure fair value: Level 1—Unadjusted quoted prices in active markets for identical assets or liabilities; Level 2—Unadjusted quoted prices in active markets for similar assets or liabilities, or unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or inputs other than quoted prices that are observable for the asset or liability; and Level 3—Unobservable inputs for the asset or liability.
Product Warranty Disclosure [Text Block]	Warranty Reserves A reserve has been established to provide for the estimated future cost of warranties on our delivered products. The Company periodically reviews the reserves and adjustments are made accordingly. A provision for warranty on products delivered is made on the basis of historical experience and identified warranty issues. Warranties cover such factors as non-conformance to specifications and defects in material and workmanship. The majority of the Company's agreements include a 3 -year warranty, although certain programs have warranties up to twenty years . The warranty reserves as of December 31, 2019 and March 31, 2019 , were $59,577 and $58,395
Cash Flow, Supplemental Disclosures [Text Block]	Supplemental Cash Flow Information The Company made income tax payments, net of refunds of $4,370 during the nine months ended December 31, 2019 . The Company received income tax refunds, net of payments of $6,243 during the nine months ended December 31, 2018 . As of December 31, 2019 , the Company remains able to purchase an additional 2,277,789 shares under the existing stock repurchase program. However, there are certain restrictions placed on the repurchase program by the Company's lenders that prevent any repurchases at this time.

BASIS OF PRESENTATION AND ORG_2

BASIS OF PRESENTATION AND ORGANIZATION Description of New Accounting Policies - Adopted	9 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Standards Recently Implemented In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842) . This ASU requires lessees to recognize most leases on their balance sheets as lease liabilities with corresponding right-of-use ("ROU") assets. The Company adopted the standard as of April 1, 2019, using the modified retrospective approach and applying the standard’s transition provisions at the adoption date. Reporting periods beginning on or after April 1, 2019, are presented in accordance with Accounting Standards Codification ("ASC") 842, Leases . Prior periods have not been adjusted and continue to be reported in accordance with previous accounting standards. The Company elected the package of practical expedients permitted under the transition guidance, which among other things, allows the Company to not reassess the historical lease classification. Adoption of the new standard resulted in the recognition of operating lease ROU assets and lease liabilities of $76,444 and $84,663 , respectively, with the difference due to prepaid and deferred rent that were reclassified to the ROU asset value. An adjustment to opening retained earnings of $225 was also recognized. The standard did not materially affect the Company's consolidated statements of operations or cash flows. See Note 5 for further details. In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income . This ASU permits a company to reclassify the income tax effects of the 2017 Tax Cuts and Jobs Act (“U.S. tax reform”) on items within AOCI to retained earnings. The Company adopted the provisions of this ASU in the first quarter of 2019 and elected not to reclassify the income tax effects of U.S. tax reform from items in accumulated other comprehensive income. The Company's policy is to release the tax effects from accumulated other comprehensive income when the related portfolio is derecognized.

BASIS OF PRESENTATION AND ORG_3

BASIS OF PRESENTATION AND ORGANIZATION Description of New Accounting Policies - Not Yet Adopted	9 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Standards Issued Not Yet Implemented In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . This ASU modifies the measurement of expected credit losses of certain financial instruments. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods. The amendments in this ASU should be applied on a modified retrospective basis to all periods presented. The Company is currently evaluating the impact of adopting ASU 2016-13 and does not expect the adoption to have a significant impact on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement . This ASU modifies the disclosure requirements for fair value measurements by removing, modifying or adding certain disclosures. ASU 2018-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. The Company is currently evaluating the effect that ASU 2018-13 will have on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-14, Compensation—Retirement Benefits—Defined Benefit Plans—General (Subtopic 715-20): Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans , which modifies the disclosure requirements for defined benefit pension plans and other postretirement plans. ASU 2018-14 is effective for annual periods beginning after December 15, 2020, with early adoption permitted. The amendments in this ASU should be applied on a retrospective basis to all periods presented. The Company is currently evaluating the effect that ASU 2018-14 will have on its consolidated financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-15, Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract . This ASU aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU 2018-15 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods, with early adoption permitted. The amendments in this ASU should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company currently expects to adopt the standard prospectively and does not expect adoption to have a significant impact on its consolidated financial statements and related disclosures.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Schedule of Intangible Assets (Tables)	9 Months Ended
	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

Revenue Recognition and Contr_2

Revenue Recognition and Contracts with Customers Contract Assets and Liabilities (Tables)	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Total Less than 1-3 years 4-5 years More than 5 Unsatisfied performance obligations $ 4,142,321 $ 1,798,557 $ 1,320,852 $ 519,786 $ 503,126
Disaggregation of Revenue [Table Text Block]	The following table shows disaggregated net sales by end market (excluding intercompany sales) for the three and nine months ended December 31, 2019 and 2018 : Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Integrated Systems Commercial aerospace $ 145,026 $ 124,453 $ 413,263 $ 378,117 Military 93,405 87,486 277,009 258,488 Business jets 10,358 16,369 43,897 43,939 Regional 8,166 7,048 24,026 21,004 Non-aviation 8,051 6,222 24,262 19,378 Revenue from contracts with customers 265,006 241,578 782,457 720,926 Amortization of acquired contract liabilities 8,377 8,172 26,126 25,789 Total revenue $ 273,383 $ 249,750 $ 808,583 $ 746,715 Aerospace Structures Commercial aerospace $ 208,943 $ 230,556 $ 681,471 $ 756,661 Military 27,394 54,275 83,773 178,679 Business jets 98,370 181,511 330,178 541,520 Regional 24,523 7,807 80,155 24,342 Non-aviation 9 8,268 19 21,556 Revenue from contracts with customers 359,239 482,417 1,175,596 1,522,758 Amortization of acquired contract liabilities 8,220 6,559 30,027 22,980 Total revenue $ 367,459 $ 488,976 $ 1,205,623 $ 1,545,738 Product Support Commercial aerospace $ 47,206 $ 53,596 $ 148,552 $ 158,158 Military 12,455 11,383 32,726 32,637 Business jets 418 350 1,383 2,143 Regional 3,144 3,840 9,408 10,512 Non-aviation 601 — 732 — Total revenue from contracts with customers 63,824 69,169 192,801 203,450 $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903	The following table shows disaggregated net sales satisfied overtime and at a point in time (excluding intercompany sales) for the three and nine months ended December 31, 2019 and 2018 : Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Integrated Systems Satisfied over time $ 76,267 $ 66,208 $ 224,442 $ 205,379 Satisfied at a point in time 188,739 175,370 558,015 515,547 Revenue from contracts with customers 265,006 241,578 782,457 720,926 Amortization of acquired contract liabilities 8,377 8,172 26,126 25,789 Total revenue 273,383 249,750 808,583 746,715 Aerospace Structures Satisfied over time $ 330,657 $ 434,870 $ 1,075,141 $ 1,385,368 Satisfied at a point in time 28,582 47,547 100,455 137,390 Revenue from contracts with customers 359,239 482,417 1,175,596 1,522,758 Amortization of acquired contract liabilities 8,220 6,559 30,027 22,980 Total revenue 367,459 488,976 1,205,623 1,545,738 Product Support Satisfied over time $ 58,962 $ 64,942 $ 179,383 $ 189,174 Satisfied at a point in time 4,862 4,227 13,418 14,276 Total revenue from contracts with customers 63,824 69,169 192,801 203,450 $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903
Contract with Customer, Asset and Liability [Table Text Block]	December 31, 2019 March 31, 2019 Change Contract assets $ 265,190 $ 326,667 $ (61,477 ) Contract liabilities (376,522 ) (450,051 ) 73,529 Net contract liability $ (111,332 ) $ (123,384 ) $ 12,052

Revenue Recognition and Contr_3

Revenue Recognition and Contracts with Customers Contractual Performance Obligations (Tables)	9 Months Ended
	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Total Less than 1-3 years 4-5 years More than 5 Unsatisfied performance obligations $ 4,142,321 $ 1,798,557 $ 1,320,852 $ 519,786 $ 503,126

LEASES Lease (Tables)

LEASES Lease (Tables)	9 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	Lease Cost Financial Statement Classification Nine Months Ended December 31, 2019 Operating lease cost Cost of sales or Selling, general and administrative expense $ 17,829 Variable lease cost Cost of sales or Selling, general and administrative expense 5,892 Financing Lease Cost: Amortization of right-of-use assets Depreciation and amortization 4,224 Interest on lease liability Interest expense and other 1,579 Total lease cost (1) $ 29,524 December 31, 2019 Weighted average remaining lease term (years) Operating leases 7.2 Finance leases 6.7 Weighted average discount rate Operating leases 6.4 % Finance leases 5.8 %
Lessee Disclosure [Abstract]
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	The maturity of the Company's lease liabilities as of December 31, 2019 , is disclosed in the table below. Operating leases Finance leases Total FY2020 (remaining of year) $ 7,359 $ 2,348 $ 9,707 FY2021 16,753 8,786 25,539 FY2022 14,451 5,751 20,202 FY2023 11,021 2,873 13,894 FY2024 8,322 2,112 10,434 Thereafter 35,810 11,263 47,073 Total lease payments 93,716 33,133 126,849 Less: Imputed interest (21,536 ) (7,166 ) (28,702 ) Total lease liabilities $ 72,180 $ 25,967 $ 98,147

LEASES Lease Income and Expense

LEASES Lease Income and Expenses (Tables)	9 Months Ended
	Dec. 31, 2019
Income and Expenses, Lessee [Abstract]
Lease, Cost [Table Text Block]	Lease Cost Financial Statement Classification Nine Months Ended December 31, 2019 Operating lease cost Cost of sales or Selling, general and administrative expense $ 17,829 Variable lease cost Cost of sales or Selling, general and administrative expense 5,892 Financing Lease Cost: Amortization of right-of-use assets Depreciation and amortization 4,224 Interest on lease liability Interest expense and other 1,579 Total lease cost (1) $ 29,524 December 31, 2019 Weighted average remaining lease term (years) Operating leases 7.2 Finance leases 6.7 Weighted average discount rate Operating leases 6.4 % Finance leases 5.8 %

LEASES Cash Flow, Lessee (Table

LEASES Cash Flow, Lessee (Tables)	9 Months Ended
	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lessee, Operating Leases [Text Block]	Nine Months Ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows used in operating leases $ 14,046 Operating cash flows used in finance leases 1,600 Financing cash flows used in finance leases 6,516 ROU assets obtained in exchange for lease liabilities Operating leases $ 2,569 Finance leases 811

LEASES Lease Assets and Liabili

LEASES Lease Assets and Liabilities (Tables)	9 Months Ended
	Dec. 31, 2019
Assets and Liabilities, Lessee [Abstract]
LONG-TERM DEBT	Leases Classification December 31, 2019 Assets Operating lease ROU assets Other, net $ 66,578 Finance lease ROU assets, cost Property and equipment, net 39,364 Accumulated amortization Property and equipment, net (17,557 ) Finance lease ROU assets, net 21,807 Total lease assets $ 88,385 Liabilities Current Operating Accrued expenses $ 14,028 Finance Current portion of long-term debt 7,795 Noncurrent Operating Other noncurrent liabilities 58,152 Finance Long-term debt, less current portion 18,172 Total lease liabilities $ 98,147 Long-term debt consists of the following: December 31, 2019 March 31, 2019 Revolving line of credit $ — $ 215,000 Receivable securitization facility 75,000 80,700 Finance leases 25,967 31,292 Senior secured notes due 2024 525,000 — Senior notes due 2021 — 375,000 Senior notes due 2022 300,000 300,000 Senior notes due 2025 500,000 500,000 Less: Debt issuance costs (17,279 ) (13,171 ) 1,408,688 1,488,821 Less: Current portion 7,795 8,201 $ 1,400,893 $ 1,480,620 Revolving Credit Facility On September 23, 2019, the Company and its subsidiary co-borrowers and guarantors entered into an Eleventh Amendment to the Credit Agreement (the “Eleventh Amendment” and the existing Credit Agreement as amended by the Eleventh Amendment, the “Credit Agreement”) with the Administrative Agent and the Lenders party thereto. Among other things, the Eleventh Amendment: (i) permits the Company to incur indebtedness in respect of the Senior Secured Notes due 2024 (the "2024 Notes") in an aggregate principal amount of up to $525,000 , subject to the terms and conditions of the Intercreditor Agreement; (ii) lowers the aggregate amount of revolving credit commitments from $700,000 to $600,000 upon the earlier of (a) the completion by the Company of $100,000 in certain asset sales or divestitures or (b) March 31, 2020; (iii) extends, with respect to extending banks representing approximately $406,500 of $600,000 total commitments outstanding as of March 31, 2020, the expiration date for the revolving line of credit available to the Company pursuant to the Credit Agreement to March 15, 2024; and retains an accordion feature that permits the Company to request an increase to the revolving credit commitments by up to $200,000 ; (iv) adds an additional mandatory prepayment provision requiring that the Company prepay any outstanding revolving credit loans in an amount equal to (a) with respect to an Identified Asset Sale (as defined in the Credit Agreement) the greater of (x) $50,000 and (y) 100% of the net asset sale proceeds received in connection therewith, and (b) with respect to other Specified Asset Sales (as defined in the Credit Agreement), 100% of the net asset proceeds received from such other Specified Asset Sales; and (v) modifies certain financial covenants and other terms. In connection with the Eleventh Amendment to the Credit Agreement, the Company incurred $6,944 of financing costs. These costs, along with the $6,222 of unamortized financing costs subsequent to the Tenth Amendment, are being amortized over the remaining term of the Credit Agreement on a lender-by-lender basis. In accordance with the reduction in the capacity of the Credit Agreement, the Company wrote off a proportional amount of unamortized financing fees existing prior to the Eleventh Amendment. The divestiture of the Company's manufacturing operations in Nashville resulted in a reduction of the revolving credit commitments to $640,000 . The obligations under the Credit Agreement and related documents are secured by liens on substantially all assets of the Company and its domestic subsidiaries pursuant to a Second Amended and Restated Guarantee and Collateral Agreement, dated as of November 19, 2013, among the administrative agent, the Company and the subsidiaries of the Company party thereto. Pursuant to the Credit Agreement, the Company can borrow, repay and re-borrow revolving credit loans, and cause to be issued letters of credit, in an aggregate principal amount not to exceed $700,000 outstanding at any time as such revolving credit commitments are reduced as discussed above. The Credit Agreement bears interest at either: (i) London Interbank Offered Rate ("LIBOR") plus between 1.50% and 3.50% ; (ii) the prime rate; or (iii) an overnight rate at the option of the Company. The applicable interest rate is based upon the Company’s ratio of total indebtedness to earnings before interest, taxes, depreciation and amortization provided, however, that during the Pricing Restriction Period (as defined in the Credit Agreement), the loans will bear interest at the highest rate above LIBOR. In addition, the Company is required to pay a commitment fee of 0.50% on the unused portion of the Credit Agreement. The Company’s obligations under the Credit Agreement are guaranteed by the Company’s domestic subsidiaries. At December 31, 2019 , there were $0 in borrowings and $22,338 in letters of credit outstanding under the Revolving Line of Credit provisions of the Credit Agreement, primarily to support insurance policies. At March 31, 2019 , there were $215,000 in outstanding borrowings and $30,773 in letters of credit outstanding under the Revolving Line of Credit provisions of the Credit Agreement, primarily to support insurance policies. The level of unused borrowing capacity under the Revolving Line of Credit provisions of the Credit Agreement varies from time to time depending in part upon its compliance with financial and other covenants set forth in the related agreement. The Credit Agreement contains certain affirmative and negative covenants, including limitations on specified levels of indebtedness to earnings before interest, taxes, depreciation and amortization, and interest coverage requirements, and includes limitations on, among other things, liens, mergers, consolidations, sales of assets, and incurrence of debt. If an event of default were to occur under the Credit Agreement, the lenders would be entitled to declare all amounts borrowed under it immediately due and payable. The occurrence of an event of default under the Credit Agreement could also cause the acceleration of obligations under certain other agreements. The Company is currently in compliance with all such covenants. As of December 31, 2019 , the Company had borrowing capacity under this agreement of $581,329 after reductions for borrowings, letters of credit outstanding under the facility and consideration of covenant limitations. Receivables Securitization Facility In December 2019, the Company amended its receivable securitization facility (the "Securitization Facility") decreasing the purchase limit from $125,000 to $75,000 and extending the term through December 2022. In connection with the Securitization Facility, the Company sells on a revolving basis certain eligible accounts receivable to Triumph Receivables, LLC, a wholly-owned special-purpose entity, which in turn sells a percentage ownership interest in the receivables to commercial paper conduits sponsored by financial institutions. The Company is the servicer of the trade accounts receivable under the Securitization Facility. As of December 31, 2019 , the maximum amount available under the Securitization Facility was $75,000 . Interest rates are based on LIBOR plus a program fee and a commitment fee. The program fee is 0.13% on the amount outstanding under the Securitization Facility. Additionally, the commitment fee is 0.50% on 100.00% of the maximum amount available under the Securitization Facility. The Company secures its trade accounts receivable, which are generally non-interest-bearing, in transactions that are accounted for as borrowings pursuant to ASC 860, Transfers and Servicing. The agreement governing the Securitization Facility contains restrictions and covenants, including limitations on the making of certain restricted payments; creation of certain liens; and certain corporate acts such as mergers, consolidations and the sale of all or substantially all of the Company's assets. Senior Secured Notes Due 2024 On September 23, 2019, the Company issued $525,000 principal amount of 6.250% Senior Secured Notes due 2024. The 2024 Notes were sold at 100% of principal amount and have an effective interest yield of 6.250% . Interest on the 2024 Notes accrues at the rate of 6.250% per annum and is payable semiannually in cash in arrears on March 15 and September 15 of each year, commencing on March 15, 2020. In connection with the issuance of the 2024 Notes, the Company incurred approximately $9,300 of costs, which were deferred and are being amortized over the term of the 2024 Notes. The 2024 Notes are second lien secured obligations of the Company and its subsidiary guarantors. The 2024 Notes: • rank equal in right of payment to existing and future senior indebtedness of the Company and its subsidiary guarantors, including the obligations of the Company and its subsidiary guarantors under the Company’s credit facility; • are effectively subordinated to all obligations of the Company and its subsidiary guarantors that are either (A) secured by a lien on the Collateral (as defined below) that is senior or prior to the second-priority liens securing the 2024 Notes, including the first-priority liens securing borrowings under the Company’s credit facility and certain cash management and hedging obligations, or (B) secured by assets that do not constitute the Collateral, in each case to the extent of the value of the assets securing such obligations; • are senior in right of payment to existing and future subordinated indebtedness of the Company and its subsidiary guarantors; • are effectively senior to all existing and future unsecured debt of the Company and its subsidiary guarantors, but only to the extent of the value of the Collateral (after giving effect to any senior liens on the Collateral); and • are structurally subordinated in right of payment to all indebtedness and other liabilities of the Company’s existing and future subsidiaries that do not guarantee the 2024 Notes. The 2024 Notes are guaranteed on a full, senior secured, joint and several basis by each of the Company’s domestic restricted subsidiaries that is a borrower under the Company’s credit facility or that guarantees any of the Company’s debt or that of any of the Company’s domestic restricted subsidiaries under the Company’s credit facility and in the future by any of the Company’s domestic restricted subsidiaries that are borrowers under any credit facility or that guarantee any debt of the Company or any of its domestic restricted subsidiaries incurred under any credit facility (the "Guarantor Subsidiaries"). The Company may redeem the 2024 Notes, in whole or in part, at any time or from time to time on or after September 15, 2020, at specified redemption prices, plus accrued and unpaid interest, if any, to the redemption date. At any time or from time to time prior to September 15, 2020, the Company may redeem the 2024 Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make whole premium, together with accrued and unpaid interest, if any, to the redemption date. In addition, the Company may redeem up to 40% of the aggregate principal amount of the outstanding 2024 Notes prior to September 15, 2020, with the net cash proceeds from certain equity offerings at a redemption price equal to 106.250% of their principal amount, together with accrued and unpaid interest, if any, to the redemption date. If the Company experiences specific kinds of changes of control, the Company is required to offer to purchase all of the 2024 Notes at a purchase price of 101% of their principal amount, plus accrued and unpaid interest, if any, to the date of purchase. The 2024 Notes were issued pursuant to an indenture dated as of September 23, 2019 (the “Indenture”). The Indenture contains covenants that, among other things, limit the ability of the Company and its restricted subsidiaries to: (i) incur additional indebtedness; (ii) pay dividends or make other distributions; (iii) make other restricted payments and investments; (iv) create liens; (v) incur restrictions on the ability of restricted subsidiaries to pay dividends or make certain other payments; (vi) sell assets, including capital stock of restricted subsidiaries; (vii) enter into sale and leaseback transactions; (viii) merge or consolidate with other entities; and (ix) enter into transactions with affiliates. Senior Notes Due 2021 On September 23, 2019, the Company called all outstanding 4.875% Senior Notes due 2021 (the "2021 Notes") Notes and discharged the 2021 Notes by irrevocably depositing with the 2021 Notes trustee sufficient funds to pay all principal and accrued interest through October 23, 2019. On October 23, 2019, the Company redeemed $375,000 principal amount of the 2021 Notes with the proceeds of the 2024 Notes. Senior Notes Due 2022 On June 3, 2014, the Company issued $300,000 principal amount of 5.250% Senior Notes due 2022 (the "2022 Notes"). The 2022 Notes were sold at 100% of principal amount and have an effective interest yield of 5.250% . Interest on the 2022 Notes accrues at the rate of 5.250% per annum and is payable semiannually in cash in arrears on June 1 and December 1 of each year, commencing on December 1, 2014. Senior Notes Due 2025 On August 17, 2017, the Company issued $500,000 principal amount of 7.750% Senior Notes due 2025 (the "2025 Notes"). The 2025 Notes were sold at 100% of principal amount and have an effective interest yield of 7.750% . Interest on the 2025 Notes accrues at the rate of 7.750% per annum and is payable semiannually in cash in arrears on February 15 and August 15 of each year, commencing on February 15 , 2018. Financial Instruments Not Recorded at Fair Value The carrying amounts of certain of our financial instruments, including cash and cash equivalents, accounts receivable and accounts payable, approximate fair value because of their short maturities (Level 1 inputs). Carrying amounts and the related estimated fair values of the Company’s financial instruments not recorded at fair value in the condensed consolidated financial statements are as follows: December 31, 2019 March 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 1,408,688 $ 1,467,892 $ 1,488,821 $ 1,568,037 The fair value of the long-term debt was calculated based on interest rates available for debt with terms and maturities similar to the Company’s existing debt arrangements (Level 2 inputs), unless quoted market prices were available. The Company made interest payments of $60,885 and $63,261 for the nine months ended December 31, 2019 and 2018

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
Schedule of components of inventories	December 31, 2019 March 31, 2019 Raw materials $ 39,036 $ 35,883 Work-in-process, including manufactured and purchased components 322,336 277,996 Finished goods 57,061 42,399 Rotable assets 55,430 57,282 Total inventories $ 473,863 $ 413,560

LONG-TERM DEBT LONG-TERM DEBT (

LONG-TERM DEBT LONG-TERM DEBT (Tables)	9 Months Ended
	Dec. 31, 2019
Long-term debt
Schedule of Long-term Debt Instruments [Table Text Block]	December 31, 2019 March 31, 2019 Revolving line of credit $ — $ 215,000 Receivable securitization facility 75,000 80,700 Finance leases 25,967 31,292 Senior secured notes due 2024 525,000 — Senior notes due 2021 — 375,000 Senior notes due 2022 300,000 300,000 Senior notes due 2025 500,000 500,000 Less: Debt issuance costs (17,279 ) (13,171 ) 1,408,688 1,488,821 Less: Current portion 7,795 8,201 $ 1,400,893 $ 1,480,620

LONG-TERM DEBT Fair Value Measu

LONG-TERM DEBT Fair Value Measurements (Tables)	9 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	December 31, 2019 March 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 1,408,688 $ 1,467,892 $ 1,488,821 $ 1,568,037

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	9 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Reconciliation between the weighted average outstanding shares used in calculation of basic and diluted earnings per share	Three Months Ended December 31, Nine Months Ended December 31, (in thousands) (in thousands) 2019 2018 2019 2018 Weighted average common shares outstanding – basic 50,395 49,668 50,074 49,616 Net effect of dilutive stock options and non-vested stock (1) — — 517 — Weighted average common shares outstanding – diluted 50,395 49,668 50,591 49,616

GOODWILL (Tables)

GOODWILL (Tables)	9 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of changes in the carrying value of goodwill by reportable segment	Integrated Systems Product Support Total Balance, March 31, 2019 $ 517,104 $ 66,121 $ 583,225 Effect of exchange rate changes 474 — 474 Balance, December 31, 2019 $ 517,578 $ 66,121 $ 583,699

PENSION AND OTHER POSTRETIREM_2

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)	9 Months Ended
	Dec. 31, 2019
Pension Plan [Member]
Components of net periodic benefit costs:
Schedule of components of net periodic benefit cost and postretirement benefit plan	Pension Benefits Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Components of net periodic benefit costs: Service cost $ 577 $ 822 $ 1,758 $ 2,476 Interest cost 16,073 19,905 52,162 59,736 Expected return on plan assets (35,210 ) (37,065 ) (106,566 ) (111,246 ) Amortization of prior service credits (183 ) (907 ) (695 ) (2,722 ) Amortization of net loss 7,752 4,179 19,444 12,538 Curtailment loss — — 23,476 — Special termination benefits — — 11,642 — Net periodic benefit (income) expense $ (10,991 ) $ (13,066 ) $ 1,221 $ (39,218 )
Other postretirement
Components of net periodic benefit costs:
Schedule of components of net periodic benefit cost and postretirement benefit plan	Other Postretirement Benefits Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Components of net periodic benefit costs: Service cost $ — $ 57 $ 62 $ 170 Interest cost 41 1,010 1,519 3,029 Amortization of prior service credits (1,276 ) (1,164 ) (3,596 ) (3,491 ) Amortization of gain (1,186 ) (2,463 ) (5,175 ) (7,389 ) Curtailment gain — — (49,491 ) — Net periodic benefit income $ (2,421 ) $ (2,560 ) $ (56,681 ) $ (7,681 )

STOCKHOLDERS' EQUITY STOCKHOL_2

STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY (Tables)	9 Months Ended
	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Comprehensive Income (Loss) Note [Text Block]	Changes in accumulated other comprehensive income (loss) ("AOCI") by component for the three and nine months ended December 31, 2019 and 2018 , respectively, were as follows: Currency Translation Adjustment Unrealized Gains and Losses on Derivative Instruments Defined Benefit Pension Plans and Other Postretirement Benefits Total (1) Balance, September 30, 2019 $ (57,516 ) $ (2,527 ) $ (505,858 ) $ (565,901 ) AOCI before reclassifications 11,074 4,581 — 15,655 Amounts reclassified from AOCI — (80 ) 5,027 4,947 Net current period AOCI $ 11,074 $ 4,501 $ 5,027 $ 20,602 Balance, December 31, 2019 $ (46,442 ) $ 1,974 $ (500,831 ) $ (545,299 ) Balance, September 30, 2018 (72,169 ) 51 (310,107 ) (382,225 ) AOCI before reclassifications (7,725 ) 47 (399 ) (8,077 ) Amounts reclassified from AOCI — (327 ) — (327 ) Net current period AOCI $ (7,725 ) $ (280 ) $ (399 ) $ (8,404 ) Balance, December 31, 2018 $ (79,894 ) $ (229 ) $ (310,506 ) $ (390,629 ) Balance, March 31, 2019 (48,606 ) (1,130 ) (437,948 ) (487,684 ) AOCI before reclassifications 2,164 4,921 (122,971 ) (115,886 ) Amounts reclassified from AOCI — (1,817 ) 60,088 58,271 Net current period AOCI $ 2,164 $ 3,104 $ (62,883 ) $ (57,615 ) Balance, December 31, 2019 $ (46,442 ) $ 1,974 $ (500,831 ) $ (545,299 )

SEGMENTS (Tables)

SEGMENTS (Tables)	9 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule of selected financial information for each reportable segment and the reconciliation of EBITDA to operating income	Three Months Ended December 31, Nine Months Ended December 31, 2019 2018 2019 2018 Net sales: Integrated Systems $ 275,248 $ 252,437 $ 813,454 $ 754,193 Aerospace Structures 368,972 490,337 1,210,729 1,551,090 Product Support 63,978 71,446 193,127 209,860 Elimination of inter-segment sales (3,532 ) (6,325 ) (10,303 ) (19,240 ) $ 704,666 $ 807,895 $ 2,207,007 $ 2,495,903 Income (loss) before income taxes: Operating income (loss): Integrated Systems $ 47,896 $ 39,947 $ 134,140 $ 115,221 Aerospace Structures 18,039 (49,813 ) 43,930 (152,143 ) Product Support 9,538 11,421 29,680 30,604 Corporate (70,857 ) (15,222 ) (101,296 ) (70,655 ) Share-based compensation expense (2,955 ) (3,266 ) (8,245 ) (8,509 ) 1,661 (16,933 ) 98,209 (85,482 ) Non-service defined benefit income (13,989 ) (16,520 ) (57,280 ) (49,581 ) Interest expense and other 33,178 29,309 96,069 83,515 $ (17,528 ) $ (29,722 ) $ 59,420 $ (119,416 ) Depreciation and amortization: Integrated Systems $ 6,992 $ 7,376 $ 21,042 $ 22,316 Aerospace Structures 20,921 27,673 77,265 84,888 Product Support 1,083 1,611 3,272 4,944 Corporate 847 744 2,533 2,201 $ 29,843 $ 37,404 $ 104,112 $ 114,349 Amortization of acquired contract liabilities, net: Integrated Systems $ 8,377 $ 8,172 $ 26,126 $ 25,789 Aerospace Structures 8,220 6,559 30,027 22,980 $ 16,597 $ 14,731 $ 56,153 $ 48,769 Adjusted EBITDAP: Integrated Systems $ 46,511 $ 39,151 $ 129,056 $ 111,748 Aerospace Structures 32,140 (28,699 ) 88,118 (2,994 ) Product Support 10,621 13,032 32,952 35,548 Corporate and share-based compensation (16,803 ) (17,744 ) (50,954 ) (59,126 ) $ 72,469 $ 5,740 $ 199,172 $ 85,176 Capital expenditures: Integrated Systems $ 2,974 $ 3,951 $ 9,734 $ 9,388 Aerospace Structures 5,910 5,722 13,915 22,937 Product Support 955 852 2,621 1,871 Corporate 416 45 980 628 $ 10,255 $ 10,570 $ 27,250 $ 34,824
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	December 31, 2019 March 31, 2019 Total Assets: Integrated Systems $ 1,277,654 $ 1,215,350 Aerospace Structures 1,005,460 1,257,039 Product Support 276,717 271,813 Corporate 65,555 110,372 $ 2,625,386 $ 2,854,574

SELECTED CONSOLIDATING FINANC_2

SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Tables)	9 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Summary of consolidating balance sheets	SUMMARY CONDENSED CONSOLIDATING BALANCE SHEETS: December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Current assets: Cash and cash equivalents $ 19,319 $ — $ 34,275 $ — $ 53,594 Trade and other receivables, net 8,391 85,193 207,146 — 300,730 Contract assets — 237,383 4,492 — 241,875 Inventory, net — 393,159 80,704 — 473,863 Prepaid expenses and other 12,031 7,330 6,772 — 26,133 Total current assets 39,741 723,065 333,389 — 1,096,195 Property and equipment, net 10,227 343,902 79,346 — 433,475 Goodwill and other intangible assets, net — 877,509 100,972 — 978,481 Other, net 27,536 59,031 30,668 — 117,235 Intercompany investments and advances 1,353,361 44,362 89,687 (1,487,410 ) — Total assets $ 1,430,865 $ 2,047,869 $ 634,062 $ (1,487,410 ) $ 2,625,386 Current liabilities: Current portion of long-term debt $ 1,900 $ 5,888 $ 7 $ — $ 7,795 Accounts payable 5,301 343,977 30,711 — 379,989 Accrued expenses 52,940 411,624 30,964 — 495,528 Total current liabilities 60,141 761,489 61,682 — 883,312 Long-term debt, less current portion 1,319,259 6,616 75,018 — 1,400,893 Intercompany advances 562,434 1,827,108 262,188 (2,651,730 ) — Accrued pension and other postretirement benefits, noncurrent 5,889 490,395 — — 496,284 Deferred income taxes and other 16,039 331,845 29,910 — 377,794 Total stockholders’ (deficit) equity (532,897 ) (1,369,584 ) 205,264 1,164,320 (532,897 ) Total liabilities and stockholders’ (deficit) equity $ 1,430,865 $ 2,047,869 $ 634,062 $ (1,487,410 ) $ 2,625,386 SUMMARY CONDENSED CONSOLIDATING BALANCE SHEETS: March 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Current assets: Cash and cash equivalents $ 70,192 $ 429 $ 22,186 $ — $ 92,807 Trade and other receivables, net 10,150 123,153 240,287 — 373,590 Contract assets — 322,698 3,969 — 326,667 Inventory, net — 339,038 74,522 — 413,560 Prepaid expenses and other 22,152 7,611 4,683 — 34,446 Total current assets 102,494 792,929 345,647 — 1,241,070 Property and equipment, net 11,276 449,489 82,945 — 543,710 Goodwill and other intangible assets, net — 912,279 101,900 — 1,014,179 Other, net 14,630 34,664 6,321 — 55,615 Intercompany investments and advances 1,112,100 230,437 88,697 (1,431,234 ) — Total assets $ 1,240,500 $ 2,419,798 $ 625,510 $ (1,431,234 ) $ 2,854,574 Current liabilities: Current portion of long-term debt $ 1,904 $ 6,297 $ — $ — $ 8,201 Accounts payable 6,571 396,542 30,670 — 433,783 Accrued expenses 58,301 445,542 29,448 — 533,291 Total current liabilities 66,776 848,381 60,118 — 975,275 Long-term debt, less current portion 1,469,543 11,077 — — 1,480,620 Intercompany advances 262,718 2,017,003 372,888 (2,652,609 ) — Accrued pension and other postretirement benefits, noncurrent 6,067 534,412 — — 540,479 Deferred income taxes and other 8,709 408,838 13,966 — 431,513 Total stockholders’ (deficit) equity (573,313 ) (1,399,913 ) 178,538 1,221,375 (573,313 ) Total liabilities and stockholders’ (deficit) equity $ 1,240,500 $ 2,419,798 $ 625,510 $ (1,431,234 ) $ 2,854,574
Condensed consolidating statements of income	CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Three Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 646,198 $ 79,869 $ (21,401 ) $ 704,666 Operating costs and expenses: Cost of sales — 505,420 62,263 (21,401 ) 546,282 Selling, general and administrative 16,785 42,854 6,335 — 65,974 Depreciation and amortization 847 26,089 2,907 — 29,843 Restructuring costs — 4,744 — — 4,744 Loss on sale of assets and businesses, net 60,019 — — — 60,019 Legal judgment gain, net (3,857 ) — — — (3,857 ) 73,794 579,107 71,505 (21,401 ) 703,005 Operating (loss) income (73,794 ) 67,091 8,364 — 1,661 Intercompany interest and charges (33,662 ) 32,005 1,657 — — Non-service defined benefit income — (13,485 ) (504 ) — (13,989 ) Interest expense and other, net 26,362 5,871 945 — 33,178 (Loss) income before income taxes (66,494 ) 42,700 6,266 — (17,528 ) Income tax (benefit) expense (15,067 ) 10,319 1,066 — (3,682 ) Net (loss) income (51,427 ) 32,381 5,200 — (13,846 ) Other comprehensive loss 4,501 4,617 11,484 — 20,602 Total comprehensive (loss) income $ (46,926 ) $ 36,998 $ 16,684 $ — $ 6,756 CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Three Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 735,753 $ 91,528 $ (19,386 ) $ 807,895 Operating costs and expenses: Cost of sales — 660,002 72,658 (19,386 ) 713,274 Selling, general and administrative 17,720 46,033 8,070 — 71,823 Depreciation and amortization 744 32,640 4,020 — 37,404 Restructuring costs — 2,327 — — 2,327 18,464 741,002 84,748 (19,386 ) 824,828 Operating (loss) income (18,464 ) (5,249 ) 6,780 — (16,933 ) Intercompany interest and charges (39,513 ) 37,484 2,029 — — Non-service defined benefit income — (16,188 ) (332 ) — (16,520 ) Interest expense and other, net 25,476 4,007 (174 ) — 29,309 (Loss) income before income taxes (4,427 ) (30,552 ) 5,257 — (29,722 ) Income tax (benefit) expense (14,248 ) 14,325 1,146 — 1,223 Net income (loss) 9,821 (44,877 ) 4,111 — (30,945 ) Other comprehensive loss (279 ) (174 ) (7,951 ) — (8,404 ) Total comprehensive income (loss) $ 9,542 $ (45,051 ) $ (3,840 ) $ — $ (39,349 ) CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Nine Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 2,027,649 $ 243,361 $ (64,003 ) $ 2,207,007 Operating costs and expenses: Cost of sales — 1,625,567 189,187 (64,003 ) 1,750,751 Selling, general and administrative 50,340 123,664 20,508 — 194,512 Depreciation and amortization 2,532 93,109 8,471 — 104,112 Restructuring costs 540 12,950 — — 13,490 Legal judgment gain, net of expenses (9,257 ) — — — (9,257 ) Loss (gain) on sale of assets and businesses, net 65,311 (10,121 ) — — 55,190 109,466 1,845,169 218,166 (64,003 ) 2,108,798 Operating (loss) income (109,466 ) 182,480 25,195 — 98,209 Intercompany interest and charges (103,245 ) 98,297 4,948 — — Non-service defined benefit income — (55,788 ) (1,492 ) — (57,280 ) Interest expense and other, net 80,016 17,423 (1,370 ) — 96,069 (Loss) income before income taxes (86,237 ) 122,548 23,109 — 59,420 Income tax (benefit) expense (20,635 ) 30,398 2,714 — 12,477 Net (loss) income (65,602 ) 92,150 20,395 — 46,943 Other comprehensive income (loss) 3,105 (62,995 ) 2,275 — (57,615 ) Total comprehensive (loss) income $ (62,497 ) $ 29,155 $ 22,670 $ — $ (10,672 ) CONDENSED CONSOLIDATING STATEMENTS OF COMPREHENSIVE INCOME: For the Nine Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net sales $ — $ 2,286,932 $ 268,808 $ (59,837 ) $ 2,495,903 Operating costs and expenses: Cost of sales — 2,052,427 215,372 (59,837 ) 2,207,962 Selling, general and administrative 57,210 140,892 24,929 — 223,031 Depreciation and amortization 2,200 99,302 12,847 — 114,349 Restructuring costs 2,766 15,440 — — 18,206 Loss on sale of assets and businesses, net 16,890 947 — — 17,837 79,066 2,309,008 253,148 (59,837 ) 2,581,385 Operating (loss) income (79,066 ) (22,076 ) 15,660 — (85,482 ) Intercompany interest and charges (118,352 ) 112,281 6,071 — — Non-service defined benefit income — (48,562 ) (1,019 ) — (49,581 ) Interest expense and other, net 73,855 13,334 (3,674 ) — 83,515 (Loss) income before income taxes (34,569 ) (99,129 ) 14,282 — (119,416 ) Income tax expense (benefit) 16,297 (15,761 ) 2,203 — 2,739 Net (loss) income (50,866 ) (83,368 ) 12,079 — (122,155 ) Other comprehensive loss (349 ) (609 ) (21,801 ) — (22,759 ) Total comprehensive loss $ (51,215 ) $ (83,977 ) $ (9,722 ) $ — $ (144,914 )
Condensed consolidating statements of cash flows	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS: For the Nine Months Ended December 31, 2019 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net (loss) income $ (65,602 ) $ 92,150 $ 20,395 $ — $ 46,943 Adjustments to reconcile net income to net cash (used in) provided by operating activities (35,640 ) (2,285 ) 30,270 — (7,655 ) Net cash (used in) provided by operating activities (101,242 ) 89,865 50,665 — 39,288 Capital expenditures (980 ) (22,874 ) (3,396 ) — (27,250 ) Proceeds from sale of assets 44,414 5,155 387 — 49,956 Net cash used in investing activities 43,434 (17,719 ) (3,009 ) — 22,706 Net increase in revolving credit facility (215,000 ) — — — (215,000 ) Proceeds on issuance of debt 525,000 — 45,980 — 570,980 Retirements and repayments of debt (376,665 ) (4,852 ) (51,680 ) — (433,197 ) Payments of deferred financing costs (17,545 ) — — — (17,545 ) Dividends paid (6,005 ) — — — (6,005 ) Repurchase of restricted shares for minimum tax obligation (1,179 ) — — — (1,179 ) Intercompany financing and advances 98,329 (67,723 ) (30,606 ) — — Net cash provided by (used in) financing activities 6,935 (72,575 ) (36,306 ) — (101,946 ) Effect of exchange rate changes on cash — — 739 — 739 Net change in cash and cash equivalents (50,873 ) (429 ) 12,089 — (39,213 ) Cash and cash equivalents at beginning of period 70,192 429 22,186 — 92,807 Cash and cash equivalents at end of period $ 19,319 $ — $ 34,275 $ — $ 53,594 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS: For the Nine Months Ended December 31, 2018 Parent Guarantor Subsidiaries Non-Guarantor Subsidiaries Eliminations Consolidated Total Net (loss) income $ (50,866 ) $ (83,368 ) $ 12,079 $ — $ (122,155 ) Adjustments to reconcile net income to net cash (used in) provided by operating activities 38,356 (154,793 ) 27,597 17,879 (70,961 ) Net cash (used in) provided by operating activities (12,510 ) (238,161 ) 39,676 17,879 (193,116 ) Capital expenditures (628 ) (30,398 ) (3,798 ) — (34,824 ) Proceeds from sale of assets — 40,235 1,182 — 41,417 Net cash (used in) provided by investing activities (628 ) 9,837 (2,616 ) — 6,593 Net increase in revolving credit facility 218,066 — — — 218,066 Proceeds on issuance of debt — — 45,000 — 45,000 Retirements and repayments of debt (1,091 ) (15,120 ) (56,800 ) — (73,011 ) Payments of deferred financing costs (1,941 ) — — — (1,941 ) Dividends paid (5,975 ) — — — (5,975 ) Repurchase of restricted shares for minimum tax obligations (645 ) — — — (645 ) Intercompany financing and advances (195,320 ) 243,505 (30,306 ) (17,879 ) — Net cash provided by (used in) financing activities 13,094 228,385 (42,106 ) (17,879 ) 181,494 Effect of exchange rate changes on cash — — (2,126 ) — (2,126 ) Net change in cash and cash equivalents (44 ) 61 (7,172 ) — (7,155 ) Cash and cash equivalents at beginning of period 44 — 35,775 — 35,819 Cash and cash equivalents at end of period $ — $ 61 $ 28,603 $ — $ 28,664

RESTRUCTURING COSTS Schedule of

RESTRUCTURING COSTS Schedule of Restructuring Expenses (Tables)	9 Months Ended
	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	16. RESTRUCTURING COSTS As disclosed in the Company's Form 10-K for the year ended March 31, 2019 , during the fiscal years ended March 31, 2017 and 2016, the Company committed to restructuring plans involving certain of its businesses, as well as the consolidation of certain of its facilities. With the exception of certain consolidations to be completed in future years, these plans were substantially complete as of March 31, 2019. The Company incurred costs of $13,490 associated with new restructuring plans during the nine months ended December 31, 2019. These costs, which are being incurred primarily within the Integrated Systems segment, pertain to third-party consulting costs and are estimated to be approximately $15,000 to $17,000

BASIS OF PRESENTATION AND ORG_4

BASIS OF PRESENTATION AND ORGANIZATION Adoption of ASC 842 (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Apr. 01, 2019
Accounting Changes and Error Corrections [Abstract]
Operating Lease, Right-of-Use Asset	$ 66,578	$ 76,444
Operating Lease, Liability	$ 72,180	84,663
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		$ 225

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Concentration of Credit Risk
Revenues	$ 704,666	$ 807,895	$ 2,207,007	$ 2,495,903
Integrated Systems [Member]
Concentration of Credit Risk
Revenues	275,248	252,437	813,454	754,193
Aerospace Structures [Member]
Concentration of Credit Risk
Revenues	368,972	490,337	1,210,729	1,551,090
Product Support [Member]
Concentration of Credit Risk
Revenues	$ 63,978	$ 71,446	$ 193,127	$ 209,860
Accounts Receivable [Member]
Concentration of Credit Risk
Concentration Risk, Percentage			10.00%
Revenue from Contract with Customer Benchmark [Member]
Concentration of Credit Risk
Concentration Risk, Percentage			10.00%
Boeing [Member] | Accounts Receivable [Member] | Credit Concentration Risk [Member]
Concentration of Credit Risk
Concentration of Risk, Accounts Receivable, Major Customer	15.00%		15.00%		18.00%
Boeing [Member] | Net sales | Product Support [Member]
Concentration of Credit Risk
Revenues			$ 17,416
Boeing [Member] | Net sales | Credit Concentration Risk [Member]
Concentration of Credit Risk
Concentration Risk, Percentage			34.00%	31.00%
Revenues			$ 742,495	$ 761,952
Boeing [Member] | Net sales | Credit Concentration Risk [Member] | Integrated Systems [Member]
Concentration of Credit Risk
Revenues			172,438	167,870
Boeing [Member] | Net sales | Credit Concentration Risk [Member] | Aerospace Structures [Member]
Concentration of Credit Risk
Revenues			$ 552,641	583,971
Boeing [Member] | Net sales | Credit Concentration Risk [Member] | Product Support [Member]
Concentration of Credit Risk
Revenues				10,111
Gulfstream [Member] | Accounts Receivable [Member] | Credit Concentration Risk [Member]
Concentration of Credit Risk
Concentration of Risk, Accounts Receivable, Major Customer	4.00%		4.00%		11.00%
Gulfstream [Member] | Net sales | Product Support [Member]
Concentration of Credit Risk
Revenues			$ 838	$ 483
Gulfstream [Member] | Net sales | Credit Concentration Risk [Member]
Concentration of Credit Risk
Concentration Risk, Percentage			12.00%	10.00%
Revenues			$ 268,917	$ 261,880
Gulfstream [Member] | Net sales | Credit Concentration Risk [Member] | Integrated Systems [Member]
Concentration of Credit Risk
Revenues			1,658	1,585
Gulfstream [Member] | Net sales | Credit Concentration Risk [Member] | Aerospace Structures [Member]
Concentration of Credit Risk
Revenues			$ 266,421	$ 259,812
Bombardier [Member] | Accounts Receivable [Member] | Credit Concentration Risk [Member]
Concentration of Credit Risk
Concentration of Risk, Accounts Receivable, Major Customer	12.00%		12.00%		13.00%
Minimum [Member]
Concentration of Credit Risk
Standard Trade Receivable, Payment Terms			30 days
Maximum [Member]
Concentration of Credit Risk
Standard Trade Receivable, Payment Terms			120 days

Intangibles (Details 3)

Intangibles (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Intangible Assets
Total intangibles, net	$ 394,782		$ 394,782		$ 430,954
Amortization expense	$ 12,083	$ 13,190	$ 36,229	$ 39,626

Supplemental Cash Flow Informat

Supplemental Cash Flow Information (Details 4) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Income taxes paid, net of refunds received	$ 4,370	$ 6,243

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Changes in Accounting Estimates (Details 5) - USD ($)	3 Months Ended			9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Revenue Benchmark [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	$ 4,722,000	$ 674,000		$ 2,347,000	$ (5,632,000)
Operating Income (Loss) [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	(210,000)	(47,028,000)		(16,393,000)	(59,407,000)
Income, net [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	(166,000)	(47,028,000)		(12,950,000)	(59,407,000)
Diluted earings per share [Member]
Change in Accounting Estimate [Line Items]
Change in Accounting Estimate	$ 0	$ (0.95)		$ (0.26)	$ (1.20)
Aerospace Structures [Member]
Change in Accounting Estimate [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results			$ 87,241,000

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Product Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Mar. 31, 2019
Product Warranties [Abstract]
Standard Product Warranty	3 years
Extended Product Warranty	20 years
Product Warranty Accrual	$ 59,577	$ 58,395

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Share Repurchase (Details)	Dec. 31, 2019shares
Equity [Abstract]
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,277,789

DISCONTINUED OPERATIONS AND ASS

DISCONTINUED OPERATIONS AND ASSETS HELD FOR SALE (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Discontinued operations and assets held for sale
Gain (Loss) on Disposition of Business		$ (60,019)			$ 0		$ (55,190)	$ (17,837)
Gain (Loss) on Disposition of Assets			$ 10,000
Gain (Loss) on Disposition of Property Plant Equipment		64,000
Proceeds from Divestiture of Businesses		60,000
Guarantor Obligations, Current Carrying Value		7,000					7,000
TS-LA/TPI [Member]
Discontinued operations and assets held for sale
Gain (Loss) on Disposition of Business						$ 17,000
Proceeds from Divestiture of Businesses						43,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received						$ 7,000
Global 7500 [Member]
Discontinued operations and assets held for sale
Gain (Loss) on Disposition of Business				$ 169,000
Machining [Member]
Discontinued operations and assets held for sale
Gain (Loss) on Disposition of Business				116,000			3,000
Proceeds from Divestiture of Businesses				43,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received				10,000
Fabrications [Member]
Discontinued operations and assets held for sale
Gain (Loss) on Disposition of Business				54,000
Proceeds from Divestiture of Businesses				133,000
NAAS [Member]
Discontinued operations and assets held for sale
Proceeds from Divestiture of Businesses				$ 18,000
Forecast [Member]
Discontinued operations and assets held for sale
Defined Benefit Plan, Plan Assets, Amount		$ 50,000					$ 50,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ 20,000

Revenue Recognition and Contr_4

Revenue Recognition and Contracts with Customers Contract with Customer, Asset and Liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Contract with Customer, Asset and Liability [Line Items]
Contract with Customer, Current and Noncurrent	$ 265,190		$ 265,190		$ 326,667
Contract with Customer, Asset, Explanation of Change			76,667
Contract with Customer, Liability, Explanation of Change			12,641
Change in Contract with Customer, Asset [Abstract]
Contract with Customer, Liability, Current	(376,522)		(376,522)		(450,051)
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Net Asset (Liability), Current and Noncurrent	111,332		111,332		123,384
Contract with Customer, Liability, Revenue Recognized			72,293
Contract with Customer, Asset, Net, Noncurrent	23,315		23,315		34,185
Contract with Customer, Liability, Noncurrent	112,059		112,059		$ 156,332
ContractAssetChange [Member]
Change in Contract with Customer, Liability [Abstract]
Change in Accounting Estimate			(61,477)
ContractLiabilitiesChange [Member]
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress			73,529
NetContractLiabilitiesChange [Member]
Change in Contract with Customer, Liability [Abstract]
Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress			12,052
Revenue Benchmark [Member]
Contract with Customer, Asset and Liability [Line Items]
Change in Accounting Estimate	$ 4,722	$ 674	$ 2,347	$ (5,632)

Revenue Recognition and Contr_5

Revenue Recognition and Contracts with Customers Contractual Performance Obligations (Details) $ in Thousands	Dec. 31, 2019USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 4,142,321
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	1,798,557
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	1,320,852
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	519,786
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 503,126

Revenue Recognition and Contr_6

Revenue Recognition and Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 4,142,321		$ 4,142,321
Amortization of Acquired Contract Liabilities	16,597	$ 14,731	56,153	$ 48,769
Revenues	704,666	807,895	2,207,007	2,495,903
Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	265,006	241,578	782,457	720,926
Amortization of Acquired Contract Liabilities	8,377	8,172	26,126	25,789
Revenues	275,248	252,437	813,454	754,193
Integrated Systems [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	76,267	66,208	224,442	205,379
Integrated Systems [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	188,739	175,370	558,015	515,547
Integrated Systems [Member] | Total - Timing of Transfer [Member]
Disaggregation of Revenue [Line Items]
Revenues	273,383	249,750	808,583	746,715
Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	359,239	482,417	1,175,596	1,522,758
Amortization of Acquired Contract Liabilities	8,220	6,559	30,027	22,980
Revenues	368,972	490,337	1,210,729	1,551,090
Aerospace Structures [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	330,657	434,870	1,075,141	1,385,368
Aerospace Structures [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	28,582	47,547	100,455	137,390
Aerospace Structures [Member] | Total - Timing of Transfer [Member]
Disaggregation of Revenue [Line Items]
Revenues	367,459	488,976	1,205,623	1,545,738
Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	63,824	69,169	192,801	203,450
Revenues	63,978	71,446	193,127	209,860
Product Support [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	58,962	64,942	179,383	189,174
Product Support [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,862	4,227	13,418	14,276
Product Support [Member] | Total - Timing of Transfer [Member]
Disaggregation of Revenue [Line Items]
Revenues	63,824	69,169	192,801	203,450
Customer [Domain] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	145,026	124,453	413,263	378,117
Customer [Domain] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	208,943	230,556	681,471	756,661
Customer [Domain] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	47,206	53,596	148,552	158,158
Military [Member] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	93,405	87,486	277,009	258,488
Military [Member] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	27,394	54,275	83,773	178,679
Military [Member] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	12,455	11,383	32,726	32,637
Business Jet [Member] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	10,358	16,369	43,897	43,939
Business Jet [Member] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	98,370	181,511	330,178	541,520
Business Jet [Member] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	418	350	1,383	2,143
Regional [Member] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,166	7,048	24,026	21,004
Regional [Member] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,523	7,807	80,155	24,342
Regional [Member] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,144	3,840	9,408	10,512
Nonaviation [Member] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,051	6,222	24,262	19,378
Nonaviation [Member] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	9	8,268	19	21,556
Nonaviation [Member] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	601	0	732	0
Total - Customer [Member] | Integrated Systems [Member]
Disaggregation of Revenue [Line Items]
Revenues	273,383	249,750	808,583	746,715
Total - Customer [Member] | Aerospace Structures [Member]
Disaggregation of Revenue [Line Items]
Revenues	367,459	488,976	1,205,623	1,545,738
Total - Customer [Member] | Product Support [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 63,824	$ 69,169	$ 192,801	$ 203,450

LEASES Leases (Details)

LEASES Leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2019	Apr. 01, 2019	Mar. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Cost	$ 17,829
Variable Lease, Cost	5,892
Finance Lease, Right-of-Use Asset, Amortization	4,224
Finance Lease, Interest Expense	1,579
Lease, Cost	29,524
Operating Lease, Payments	14,046
Finance Lease, Interest Payment on Liability	1,600
Finance Lease, Principal Payments	6,516
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2,569
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	811
Operating Lease, Right-of-Use Asset	66,578	$ 76,444
Finance Lease - Right of Use Asset, Gross	39,364
Finance Lease, Right-of-Use Asset	(21,807)
Total Right of Use Assets	88,385
Operating Lease, Liability, Current	14,028
Current portion of long-term debt	7,795		$ 8,201
Operating Lease, Liability, Noncurrent	58,152
Finance Lease, Liability, Noncurrent	18,172
Total Lease Liabilities	$ 98,147
Operating Lease, Weighted Average Remaining Lease Term	7 years 2 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	6 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	6.40%
Finance Lease, Weighted Average Discount Rate, Percent	5.80%
Finance Lease Right of Use Asset Accumulated Amortization [Member]
Lessee, Lease, Description [Line Items]
Finance Lease, Right-of-Use Asset	$ (17,557)

LEASES Lease Maturity Table (De

LEASES Lease Maturity Table (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Apr. 01, 2019
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 7,359
Finance Lease, Liability, Payments, Remainder of Fiscal Year	2,348
Total Lease Payments - Remainder of Fiscal Year	9,707
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	16,753
Finance Lease, Liability, Payments, Due Year Two	8,786
Total Lease Payments - Due Year 2	25,539
Lessee, Operating Lease, Liability, Payments, Due Year Three	14,451
Finance Lease, Liability, Payments, Due Year Three	5,751
Total Lease Payments - Due Year 3	20,202
Lessee, Operating Lease, Liability, Payments, Due Year Four	11,021
Finance Lease, Liability, Payments, Due Year Four	2,873
Total Lease Payments - Due Year 4	13,894
Lessee, Operating Lease, Liability, Payments, Due Year Five	8,322
Finance Lease, Liability, Payments, Due Year Five	2,112
Total Lease Payments - Due Year 5	10,434
Lessee, Operating Lease, Liability, Payments, Due after Year Five	35,810
Finance Lease, Liability, Payments, Due after Year Five	11,263
Total Lease Payments - Due After Year 5	47,073
Lessee, Operating Lease, Liability, Payments, Due	93,716
Finance Lease, Liability, Payment, Due	33,133
Total Lease Payments - Due	126,849
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(21,536)
Finance Lease, Liability, Undiscounted Excess Amount	(7,166)
Total Lease Payments - Undiscounted Excess	(28,702)
Operating Lease, Liability	72,180	$ 84,663
Finance Lease, Liability	25,967
Total Lease Liability	$ 98,147

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019
Inventory [Line Items]
Raw materials	$ 39,036	$ 35,883
Work-in-process	322,336	277,996
Finished goods	57,061	42,399
Rotable Assets	55,430	57,282
Total inventories	$ 473,863	$ 413,560

LONG-TERM DEBT, BY TYPE (Detail

LONG-TERM DEBT, BY TYPE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended		54 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 15, 2024	May 03, 2021	Jun. 30, 2019	Mar. 31, 2019
Long-term debt
Interest Paid, Including Capitalized Interest, Operating and Investing Activities				$ 60,885	$ 63,261
Proceeds from Sale of Specified Assets			$ 100,000
Repayments of Lines of Credit			$ 50,000
Proceeds from Sale of Productive Assets			100.00%
Unamortized Debt Issuance Expense	$ (17,279)			(17,279)					$ (13,171)
Long-term debt	1,408,688			1,408,688					1,488,821
Less current portion	7,795			7,795					8,201
Long-term debt, less current portion	1,400,893			1,400,893					1,480,620
Payments of Financing Costs				17,545	$ 1,941
Senior Notes Due 2024 [Member] [Member]
Long-term debt
Long-term debt	$ 525,000			$ 525,000					0
Debt Instrument, Interest Rate, Effective Percentage	6.25%			6.25%
Debt Instrument, Interest Rate, Stated Percentage	6.25%			6.25%
Payments of Financing Costs				$ 9,300
Revolving credit facility
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity	$ 700,000			700,000			$ 406,500
Line of Credit Facility, Maximum Borrowing Capacity Reduction	640,000		$ 600,000	640,000
Line of Credit Facility, Commitment Fee Amount						$ 200,000
Long-term debt	0			0					215,000
Payments of Financing Costs		$ 6,944
Asset-backed Securities [Member]
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity	75,000			75,000					125,000
Long-term debt	75,000			75,000					80,700
Capital Lease Obligations [Member]
Long-term debt
Long-term debt	25,967			25,967					31,292
Senior notes due 2021 [Member]
Long-term debt
Long-term debt	0			0					375,000
Debt Instrument, Face Amount								$ 375,000
Debt Instrument, Interest Rate, Stated Percentage								4.875%
Senior Notes Due 2022 [Member]
Long-term debt
Long-term debt	$ 300,000			$ 300,000					300,000
Debt Instrument, Interest Rate, Effective Percentage	5.25%			5.25%
Debt Instrument, Interest Rate, Stated Percentage	5.25%			5.25%
Proceeds from Debt Instrument Percentage of Original Principal	100.00%
Senior Notes Due 2025 [Member]
Long-term debt
Long-term debt	$ 500,000			$ 500,000					$ 500,000
Debt Instrument, Interest Rate, Stated Percentage	7.75%			7.75%

LONG-TERM DEBT (Details 2)

LONG-TERM DEBT (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	May 03, 2021	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Long-term debt
Payments of Financing Costs			$ 17,545	$ 1,941
Debt Instrument, Redemption Price, Percentage - Change of Control	101.00%
Outstanding borrowing amount	$ 1,408,688		1,408,688					$ 1,488,821
Senior Notes Due 2025 [Member]
Long-term debt
Outstanding borrowing amount	$ 500,000		$ 500,000					500,000
Debt Instrument, Interest Rate, Stated Percentage	7.75%		7.75%
Revolving credit facility
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity Reduction	$ 640,000		$ 640,000			$ 600,000
Line of Credit Facility, Maximum Borrowing Capacity	700,000		700,000		$ 406,500
Payments of Financing Costs		$ 6,944
Outstanding borrowing amount	0		0					215,000
Letters of Credit Outstanding, Amount	22,338		22,338					30,773
Borrowing capacity under revolving credit facility after reductions for borrowings and letters of credit outstanding	581,329		581,329
Asset-backed Securities [Member]
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity	75,000		75,000					125,000
Outstanding borrowing amount	$ 75,000		$ 75,000					80,700
Program fee on the amount outstanding (as a percent)	0.13%
Line of Credit Facility, Commitment Fee Percentage	0.50%
Percentage of line of credit on which commitment fees are charged (as a percent)	100.00%
Senior Notes Due 2024 [Member] [Member]
Long-term debt
Debt Instrument, Interest Rate, Effective Percentage	6.25%		6.25%
Payments of Financing Costs			$ 9,300
Debt Instrument, Redemption Price, Percentage	100.00%
Debt Instrument, Redemption, Description	40.00%
Debt Instrument, Redemption Price, Percentage - Equity Offering	106.25%
Outstanding borrowing amount	$ 525,000		$ 525,000					0
Debt Instrument, Interest Rate, Stated Percentage	6.25%		6.25%
Capital Lease Obligations [Member]
Long-term debt
Outstanding borrowing amount	$ 25,967		$ 25,967					31,292
Senior notes due 2021 [Member]
Long-term debt
Debt instrument principal amount							$ 375,000
Outstanding borrowing amount	$ 0		$ 0					$ 375,000
Debt Instrument, Interest Rate, Stated Percentage							4.875%
Maximum [Member] | Revolving credit facility
Long-term debt
Commitment fees (as a percent)	0.50%

LONG-TERM DEBT (Details 3)

LONG-TERM DEBT (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	May 03, 2021	Sep. 23, 2019	Jun. 30, 2019	Mar. 31, 2019
Long-term debt
Interest Paid, Including Capitalized Interest, Operating and Investing Activities			$ 60,885	$ 63,261
Payments of Financing Costs			17,545	$ 1,941
Long-term debt	$ 1,408,688		1,408,688					$ 1,488,821
Revolving credit facility
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity	700,000		700,000		$ 406,500
Payments of Financing Costs		$ 6,944
Deferred Finance Costs, Noncurrent, Net						$ 6,222
Letters of Credit Outstanding, Amount	22,338		22,338					30,773
Line of Credit Facility, Remaining Borrowing Capacity	581,329		581,329
Long-term debt	0		0					215,000
Asset-backed Securities [Member]
Long-term debt
Line of Credit Facility, Maximum Borrowing Capacity	$ 75,000		75,000					125,000
Line of Credit Facility, Commitment Fee Percentage	0.50%
Line of Credit, Commitment Fee on Maximum Amount Available, Percentage	100.00%
Line of Credit Facility, Amount Outstanding Commitment Fee, Percentage	0.13%
Long-term debt	$ 75,000		75,000					80,700
Equipment leasing facility and other capital leases
Long-term debt
Long-term debt	$ 25,967		$ 25,967					31,292
Senior Notes Due 2024 [Member] [Member]
Long-term debt
Debt instrument interest rate stated percentage (as a percent)	6.25%		6.25%
Payments of Financing Costs			$ 9,300
Effective interest yield on principal amount (as a percent)	6.25%		6.25%
Long-term debt	$ 525,000		$ 525,000					0
Senior notes due 2021 [Member]
Long-term debt
Debt instrument principal amount							$ 375,000
Debt instrument interest rate stated percentage (as a percent)							4.875%
Long-term debt	$ 0		$ 0					375,000
Senior Notes Due 2022 [Member]
Long-term debt
Debt instrument interest rate stated percentage (as a percent)	5.25%		5.25%
Proceeds from loan, percentage of principal (as a percent)	100.00%
Effective interest yield on principal amount (as a percent)	5.25%		5.25%
Long-term debt	$ 300,000		$ 300,000					300,000
Senior Notes Due 2025 [Member]
Long-term debt
Debt instrument interest rate stated percentage (as a percent)	7.75%		7.75%
Long-term debt	$ 500,000		$ 500,000					500,000
Estimate of Fair Value Measurement [Member]
Long-term debt
Long-term debt	1,467,892		1,467,892					1,568,037
Reported Value Measurement [Member]
Long-term debt
Long-term debt	$ 1,408,688		$ 1,408,688					$ 1,488,821
Maximum [Member] | Revolving credit facility
Long-term debt
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
LIBOR | Minimum [Member] | Revolving credit facility
Long-term debt
Debt Instrument, Basis Spread on Variable Rate	1.50%
LIBOR | Maximum [Member] | Revolving credit facility
Long-term debt
Debt Instrument, Basis Spread on Variable Rate	3.50%

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding-basic (in shares)	50,395	49,668	50,074	49,616
Net effect of dilutive stock options (in shares)	0	0	517	0
Weighted average common shares outstanding - diluted (in shares)	50,395	49,668	50,591	49,616

INCOME TAXES (Details)

INCOME TAXES (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019USD ($)	Dec. 31, 2018	Dec. 31, 2019USD ($)jurisdiction	Dec. 31, 2018	Mar. 31, 2019USD ($)
Income Tax Provision [Line Items]
Total amount of unrecognized tax benefits | $	$ 20,105		$ 20,105		$ 19,152
Effective income tax rate (as a percent)	21.00%	(4.10%)	21.00%	(2.30%)
State and Local Jurisdiction [Member]
Income Tax Provision [Line Items]
Income Tax Examination, Description | jurisdiction			1

GOODWILL (Details)

GOODWILL (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2019USD ($)
Changes in the carrying value of goodwill
Balance at the beginning of the period	$ 583,225
Effect of exchange rate changes and other	474
Balance at the end of the period	583,699
Integrated Systems [Member]
Changes in the carrying value of goodwill
Balance at the beginning of the period	517,104
Effect of exchange rate changes and other	474
Balance at the end of the period	517,578
Aerospace Structures [Member]
Changes in the carrying value of goodwill
Goodwill, Impaired, Accumulated Impairment Loss	1,246,454
Product Support [Member]
Changes in the carrying value of goodwill
Balance at the beginning of the period	66,121
Effect of exchange rate changes and other	0
Balance at the end of the period	$ 66,121

PENSION AND OTHER POSTRETIREM_3

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Components of net periodic benefit costs:
Stock Issued During Period, Value, Employee Benefit Plan	$ 50,000
Pension Plan [Member]
Components of net periodic benefit costs:
Service cost	577	$ 822	$ 1,758	$ 2,476
Interest cost	16,073	19,905	52,162	59,736
Expected return on plan assets	(35,210)	(37,065)	(106,566)	(111,246)
Amortization of prior service costs	(183)	(907)	(695)	(2,722)
Defined Benefit Plan, Amortization of Gain (Loss)	7,752	4,179	19,444	12,538
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0	23,476	0
Defined Benefit Plan, Other Cost (Credit)	0	0	11,642	0
Net periodic benefit cost	(10,991)	(13,066)	1,221	(39,218)
Other postretirement
Components of net periodic benefit costs:
Service cost	0	57	62	170
Interest cost	41	1,010	1,519	3,029
Amortization of prior service costs	(1,276)	(1,164)	(3,596)	(3,491)
Defined Benefit Plan, Amortization of Gain (Loss)	(1,186)	(2,463)	(5,175)	(7,389)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	0	0	(49,491)	0
Net periodic benefit cost	$ (2,421)	$ (2,560)	(56,681)	$ (7,681)
TAS - Nashville, TN [Member]
Components of net periodic benefit costs:
Increase (Decrease) in Obligation, Other Postretirement Benefits			34,731
Increase (Decrease) in Obligation, Pension Benefits			4,898
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment			(8,363)
TAS - Grand Prairie, TX [Member]
Components of net periodic benefit costs:
Increase (Decrease) in Obligation, Other Postretirement Benefits			61,766
Defined Benefit Plan, Other Cost (Credit)			11,642
TAS - Grand Prairie, TX [Member] | Pension Plan [Member]
Components of net periodic benefit costs:
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment			(23,476)
TAS - Grand Prairie, TX [Member] | Other postretirement
Components of net periodic benefit costs:
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment			$ (41,128)

STOCKHOLDERS' EQUITY STOCKHOL_3

STOCKHOLDERS' EQUITY STOCKHOLDERS' EQUITY (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (545,299)	$ (390,629)	$ (545,299)	$ (390,629)	$ (565,901)	$ (489,277)	$ (487,684)	$ (382,225)	$ (383,828)	$ (367,870)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	11,074	(7,725)	2,164	(21,211)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	4,581	47	4,921	787
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	15,655	(8,077)	(115,886)	(21,621)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(80)	(327)	(1,817)	(1,138)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	4,947	(327)	58,271	(1,138)
Other Comprehensive Income (Loss), Net of Tax	20,602	(8,404)	(57,615)	(22,759)
Accumulated Translation Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	(46,442)	(79,894)	(46,442)	(79,894)	(57,516)		(48,606)	(72,169)		(58,683)
Other Comprehensive Income (Loss), Net of Tax	11,074	(7,725)	2,164	(21,211)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	1,974	(229)	1,974	(229)	(2,527)		(1,130)	51		122
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	4,581	47	4,921	787
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(80)	(327)	(1,817)	(1,138)
Other Comprehensive Income (Loss), Net of Tax	4,501	(280)	3,104	(351)
Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(500,831)	(310,506)	(500,831)	(310,506)	$ (505,858)		$ (437,948)	$ (310,107)		$ (309,309)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0	(399)	(122,971)	(1,197)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	5,027	0	60,088	0
Other Comprehensive Income (Loss), Net of Tax	$ 5,027	$ (399)	$ (62,883)	$ (1,197)

SEGMENTS (Details)

SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Costs and Expenses	$ 703,005	$ 824,828	$ 2,108,798	$ 2,581,385
Gain (Loss) on Disposition of Business	(60,019)	0	(55,190)	(17,837)
Operating Income (Loss)	1,661	(16,933)	98,209	(85,482)
Employee Benefits and Share-based Compensation	(2,955)	(3,266)	(8,245)	(8,509)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(13,989)	(16,520)	(57,280)	(49,581)
Interest expense and other	33,178	29,309	96,069	83,515
Income (loss) from continuing operations before income taxes	(17,528)	(29,722)	59,420	(119,416)
Depreciation and amortization	29,843	37,404	104,112	114,349
Amortization of Acquired Contract Liabilities	16,597	14,731	56,153	48,769
EBITDA	72,469	5,740	199,172	85,176
Capital expenditures	10,255	10,570	27,250	34,824
Total assets	2,625,386		2,625,386		$ 2,854,574
Revenues	704,666	807,895	2,207,007	2,495,903
Integrated Systems [Member]
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Operating Income (Loss)	47,896	39,947	134,140	115,221
Depreciation and amortization	6,992	7,376	21,042	22,316
Amortization of Acquired Contract Liabilities	8,377	8,172	26,126	25,789
EBITDA	46,511	39,151	129,056	111,748
Capital expenditures	2,974	3,951	9,734	9,388
Total assets	1,277,654		1,277,654		1,215,350
Revenues	275,248	252,437	813,454	754,193
Aerospace Structures [Member]
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Operating Income (Loss)	18,039	(49,813)	43,930	(152,143)
Depreciation and amortization	20,921	27,673	77,265	84,888
Amortization of Acquired Contract Liabilities	8,220	6,559	30,027	22,980
EBITDA	32,140	(28,699)	88,118	(2,994)
Capital expenditures	5,910	5,722	13,915	22,937
Total assets	1,005,460		1,005,460		1,257,039
Revenues	368,972	490,337	1,210,729	1,551,090
Product Support [Member]
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Operating Income (Loss)	9,538	11,421	29,680	30,604
Depreciation and amortization	1,083	1,611	3,272	4,944
EBITDA	10,621	13,032	32,952	35,548
Capital expenditures	955	852	2,621	1,871
Total assets	276,717		276,717		271,813
Revenues	63,978	71,446	193,127	209,860
Elimination of inter-segment sales
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Revenues	(3,532)	(6,325)	(10,303)	(19,240)
Corporate
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Operating Income (Loss)	(70,857)	(15,222)	(101,296)	(70,655)
Depreciation and amortization	847	744	2,533	2,201
EBITDA	(16,803)	(17,744)	(50,954)	(59,126)
Capital expenditures	416	45	980	628
Total assets	65,555		65,555		110,372
Guarantor Subsidiaries [Member]
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Costs and Expenses	579,107	741,002	1,845,169	2,309,008
Gain (Loss) on Disposition of Business	0	0	10,121	(947)
Operating Income (Loss)	67,091	(5,249)	182,480	(22,076)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(13,485)	(16,188)	(55,788)	(48,562)
Interest expense and other	5,871	4,007	17,423	13,334
Income (loss) from continuing operations before income taxes	42,700	(30,552)	122,548	(99,129)
Depreciation and amortization	26,089	32,640	93,109	99,302
Capital expenditures			22,874	30,398
Total assets	2,047,869		2,047,869		$ 2,419,798
Revenues	646,198	735,753	2,027,649	2,286,932
Non-US [Member]
Financial information of reportable segment and the reconciliation of EBITDA to operating income
Revenues	$ 164,832	$ 245,505	$ 526,130	$ 736,501

SELECTED CONSOLIDATING FINANC_3

SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Consolidating Financial Statements, Captions
Cash and cash equivalents	$ 53,594			$ 92,807	$ 28,664			$ 35,819
Trade and other receivables, net	300,730			373,590
Contract with Customer, Asset, Net, Current	241,875			326,667
Inventory, Net	473,863			413,560
Prepaid and other current assets	26,133			34,446
Total current assets	1,096,195			1,241,070
Property and equipment, net	433,475			543,710
Goodwill and other intangible assets, net	978,481			1,014,179
Other, net	117,235			55,615
Intercompany investments and advances	0			0
Total assets	2,625,386			2,854,574
Current liabilities:
Current portion of long-term debt	7,795			8,201
Accounts payable	379,989			433,783
Accrued expenses	231,065			239,572
Accrued Liabilities and Other Liabilities	495,528			533,291
Total current liabilities	883,312			975,275
Long-term debt, less current portion	1,400,893			1,480,620
Intercompany advances	0			0
Accrued pension and other postretirement benefits, noncurrent	496,284			540,479
Deferred income taxes and other	377,794			431,513
Total stockholders’ equity	(532,897)	$ (590,824)	$ (557,919)	(573,313)	(276,497)	$ (238,051)	$ (226,581)	450,534
Total liabilities and stockholders' equity	2,625,386			2,854,574
Rotable Assets	55,430			57,282
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Cash and cash equivalents	0			0	0			0
Trade and other receivables, net	0			0
Contract with Customer, Asset, Net, Current	0			0
Inventory, Net	0			0
Prepaid and other current assets	0			0
Total current assets	0			0
Property and equipment, net	0			0
Goodwill and other intangible assets, net	0			0
Other, net	0			0
Intercompany investments and advances	(1,487,410)			(1,431,234)
Total assets	(1,487,410)			(1,431,234)
Current liabilities:
Current portion of long-term debt	0			0
Accounts payable	0			0
Accrued Liabilities and Other Liabilities	0			0
Total current liabilities	0			0
Long-term debt, less current portion	0			0
Intercompany advances	(2,651,730)			(2,652,609)
Accrued pension and other postretirement benefits, noncurrent	0			0
Deferred income taxes and other	0			0
Total stockholders’ equity	1,164,320			1,221,375
Total liabilities and stockholders' equity	(1,487,410)			(1,431,234)
Parent
Consolidating Financial Statements, Captions
Cash and cash equivalents	19,319			70,192	0			44
Trade and other receivables, net	8,391			10,150
Contract with Customer, Asset, Net, Current	0			0
Inventory, Net	0			0
Prepaid and other current assets	12,031			22,152
Total current assets	39,741			102,494
Property and equipment, net	10,227			11,276
Goodwill and other intangible assets, net	0			0
Other, net	27,536			14,630
Intercompany investments and advances	1,353,361			1,112,100
Total assets	1,430,865			1,240,500
Current liabilities:
Current portion of long-term debt	1,900			1,904
Accounts payable	5,301			6,571
Accrued Liabilities and Other Liabilities	52,940			58,301
Total current liabilities	60,141			66,776
Long-term debt, less current portion	1,319,259			1,469,543
Intercompany advances	562,434			262,718
Accrued pension and other postretirement benefits, noncurrent	5,889			6,067
Deferred income taxes and other	16,039			8,709
Total stockholders’ equity	(532,897)			(573,313)
Total liabilities and stockholders' equity	1,430,865			1,240,500
Guarantor Subsidiaries [Member]
Consolidating Financial Statements, Captions
Cash and cash equivalents	0			429	61			0
Trade and other receivables, net	85,193			123,153
Contract with Customer, Asset, Net, Current	237,383			322,698
Inventory, Net	393,159			339,038
Prepaid and other current assets	7,330			7,611
Total current assets	723,065			792,929
Property and equipment, net	343,902			449,489
Goodwill and other intangible assets, net	877,509			912,279
Other, net	59,031			34,664
Intercompany investments and advances	44,362			230,437
Total assets	2,047,869			2,419,798
Current liabilities:
Current portion of long-term debt	5,888			6,297
Accounts payable	343,977			396,542
Accrued Liabilities and Other Liabilities	411,624			445,542
Total current liabilities	761,489			848,381
Long-term debt, less current portion	6,616			11,077
Intercompany advances	1,827,108			2,017,003
Accrued pension and other postretirement benefits, noncurrent	490,395			534,412
Deferred income taxes and other	331,845			408,838
Total stockholders’ equity	(1,369,584)			(1,399,913)
Total liabilities and stockholders' equity	2,047,869			2,419,798
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Cash and cash equivalents	34,275			22,186	$ 28,603			$ 35,775
Trade and other receivables, net	207,146			240,287
Contract with Customer, Asset, Net, Current	4,492			3,969
Inventory, Net	80,704			74,522
Prepaid and other current assets	6,772			4,683
Total current assets	333,389			345,647
Property and equipment, net	79,346			82,945
Goodwill and other intangible assets, net	100,972			101,900
Other, net	30,668			6,321
Intercompany investments and advances	89,687			88,697
Total assets	634,062			625,510
Current liabilities:
Current portion of long-term debt	7			0
Accounts payable	30,711			30,670
Accrued Liabilities and Other Liabilities	30,964			29,448
Total current liabilities	61,682			60,118
Long-term debt, less current portion	75,018			0
Intercompany advances	262,188			372,888
Accrued pension and other postretirement benefits, noncurrent	0			0
Deferred income taxes and other	29,910			13,966
Total stockholders’ equity	205,264			178,538
Total liabilities and stockholders' equity	$ 634,062			$ 625,510

SELECTED CONSOLIDATING FINANC_4

SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Consolidating Financial Statements, Captions
Revenues	$ 704,666	$ 807,895	$ 2,207,007	$ 2,495,903
Cost of Goods and Services Sold	546,282	713,274	1,750,751	2,207,962
Selling, General and Administrative Expense	65,974	71,823	194,512	223,031
Depreciation and amortization	29,843	37,404	104,112	114,349
Restructuring Charges	4,744	2,327	13,490	18,206
Litigation Judgment Gain, net of expenses	(3,857)	0	(9,257)	0
(Gain) Loss on Disposition of Business	60,019	0	55,190	17,837
Operating Income (Loss)	703,005	824,828	2,108,798	2,581,385
Operating Income (Loss)	1,661	(16,933)	98,209	(85,482)
Intercompany Interest and Charges	0	0	0	0
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(13,989)	(16,520)	(57,280)	(49,581)
Interest expense and other	33,178	29,309	96,069	83,515
Income (loss) from continuing operations before income taxes	(17,528)	(29,722)	59,420	(119,416)
Income tax expense (benefit)	(3,682)	1,223	12,477	2,739
Net Income (Loss) Attributable to Parent	(13,846)	(30,945)	46,943	(122,155)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	20,602	(8,404)	(57,615)	(22,759)
Total comprehensive income	6,756	(39,349)	(10,672)	(144,914)
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Revenues	(21,401)	(19,386)	(64,003)	(59,837)
Cost of Goods and Services Sold	(21,401)	(19,386)	(64,003)	(59,837)
Selling, General and Administrative Expense	0	0	0	0
Depreciation and amortization	0	0	0	0
Restructuring Charges	0	0	0	0
Litigation Judgment Gain, net of expenses	0		0
(Gain) Loss on Disposition of Business	0	0	0	0
Operating Income (Loss)	(21,401)	(19,386)	(64,003)	(59,837)
Operating Income (Loss)	0	0	0	0
Intercompany Interest and Charges	0	0	0	0
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	0	0	0	0
Interest expense and other	0	0	0	0
Income (loss) from continuing operations before income taxes	0	0	0	0
Income tax expense (benefit)	0	0	0	0
Net Income (Loss) Attributable to Parent	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Total comprehensive income	0	0	0	0
Parent
Consolidating Financial Statements, Captions
Revenues	0	0	0	0
Cost of Goods and Services Sold	0	0	0	0
Selling, General and Administrative Expense	16,785	17,720	50,340	57,210
Depreciation and amortization	847	744	2,532	2,200
Restructuring Charges	0	0	540	2,766
Litigation Judgment Gain, net of expenses	(3,857)		(9,257)
(Gain) Loss on Disposition of Business	60,019	0	65,311	16,890
Operating Income (Loss)	73,794	18,464	109,466	79,066
Operating Income (Loss)	(73,794)	(18,464)	(109,466)	(79,066)
Intercompany Interest and Charges	(33,662)	(39,513)	(103,245)	(118,352)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	0	0	0	0
Interest expense and other	26,362	25,476	80,016	73,855
Income (loss) from continuing operations before income taxes	(66,494)	(4,427)	(86,237)	(34,569)
Income tax expense (benefit)	(15,067)	(14,248)	(20,635)	16,297
Net Income (Loss) Attributable to Parent	(51,427)	9,821	(65,602)	(50,866)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	4,501	(279)	3,105	(349)
Total comprehensive income	(46,926)	9,542	(62,497)	(51,215)
Guarantor Subsidiaries [Member]
Consolidating Financial Statements, Captions
Revenues	646,198	735,753	2,027,649	2,286,932
Cost of Goods and Services Sold	505,420	660,002	1,625,567	2,052,427
Selling, General and Administrative Expense	42,854	46,033	123,664	140,892
Depreciation and amortization	26,089	32,640	93,109	99,302
Restructuring Charges	4,744	2,327	12,950	15,440
Litigation Judgment Gain, net of expenses	0		0
(Gain) Loss on Disposition of Business	0	0	(10,121)	947
Operating Income (Loss)	579,107	741,002	1,845,169	2,309,008
Operating Income (Loss)	67,091	(5,249)	182,480	(22,076)
Intercompany Interest and Charges	32,005	37,484	98,297	112,281
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(13,485)	(16,188)	(55,788)	(48,562)
Interest expense and other	5,871	4,007	17,423	13,334
Income (loss) from continuing operations before income taxes	42,700	(30,552)	122,548	(99,129)
Income tax expense (benefit)	10,319	14,325	30,398	(15,761)
Net Income (Loss) Attributable to Parent	32,381	(44,877)	92,150	(83,368)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	4,617	(174)	(62,995)	(609)
Total comprehensive income	36,998	(45,051)	29,155	(83,977)
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Revenues	79,869	91,528	243,361	268,808
Cost of Goods and Services Sold	62,263	72,658	189,187	215,372
Selling, General and Administrative Expense	6,335	8,070	20,508	24,929
Depreciation and amortization	2,907	4,020	8,471	12,847
Restructuring Charges	0	0	0	0
Litigation Judgment Gain, net of expenses	0		0
(Gain) Loss on Disposition of Business	0	0	0	0
Operating Income (Loss)	71,505	84,748	218,166	253,148
Operating Income (Loss)	8,364	6,780	25,195	15,660
Intercompany Interest and Charges	1,657	2,029	4,948	6,071
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(504)	(332)	(1,492)	(1,019)
Interest expense and other	945	(174)	(1,370)	(3,674)
Income (loss) from continuing operations before income taxes	6,266	5,257	23,109	14,282
Income tax expense (benefit)	1,066	1,146	2,714	2,203
Net Income (Loss) Attributable to Parent	5,200	4,111	20,395	12,079
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	11,484	(7,951)	2,275	(21,801)
Total comprehensive income	$ 16,684	$ (3,840)	$ 22,670	$ (9,722)

SELECTED CONSOLIDATING FINANC_5

SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Consolidating Financial Statements, Captions
Net Income (Loss) Attributable to Parent	$ (13,846)	$ (30,945)	$ 46,943	$ (122,155)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			(7,655)	(70,961)
Net cash provided by (used in) operating activities			39,288	(193,116)
Capital expenditures	(10,255)	(10,570)	(27,250)	(34,824)
Payments for (Proceeds from) Businesses and Interests in Affiliates			(49,956)	(41,417)
Proceeds from sale of assets				41,417
Net cash used in investing activities			22,706	6,593
Net increase in revolving credit facility			215,000	(218,066)
Proceeds from issuance of long-term debt and capital leases			570,980	45,000
Retirements and repayments of debt			433,197	73,011
Payments of Financing Costs			17,545	1,941
Dividends paid			6,005	5,975
Repurchase of restricted shares for minimum tax obligation			(1,179)	(645)
Intercompany financing and advances			0	0
Net cash (used in) provided by financing activities			(101,946)	181,494
Effect of exchange rate changes on cash			739	(2,126)
Net change in cash and cash equivalents			(39,213)	(7,155)
Cash and cash equivalents	53,594	28,664	53,594	28,664	$ 92,807	$ 35,819
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Net Income (Loss) Attributable to Parent	0	0	0	0
Adjustments to reconcile net income to net cash provided by (used in) operating activities			0	17,879
Net cash provided by (used in) operating activities			0	17,879
Capital expenditures			0	0
Payments for (Proceeds from) Businesses and Interests in Affiliates			0
Proceeds from sale of assets				0
Net cash used in investing activities			0	0
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			0	0
Retirements and repayments of debt			0	0
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation			0	0
Intercompany financing and advances			0	(17,879)
Net cash (used in) provided by financing activities			0	(17,879)
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			0	0
Cash and cash equivalents	0	0	0	0	0	0
Parent
Consolidating Financial Statements, Captions
Net Income (Loss) Attributable to Parent	(51,427)	9,821	(65,602)	(50,866)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			(35,640)	38,356
Net cash provided by (used in) operating activities			(101,242)	(12,510)
Capital expenditures			(980)	(628)
Payments for (Proceeds from) Businesses and Interests in Affiliates			(44,414)
Proceeds from sale of assets				0
Net cash used in investing activities			43,434	(628)
Net increase in revolving credit facility			215,000	(218,066)
Proceeds from issuance of long-term debt and capital leases			525,000	0
Retirements and repayments of debt			376,665	1,091
Payments of Financing Costs			17,545	1,941
Dividends paid			6,005	5,975
Repurchase of restricted shares for minimum tax obligation			(1,179)	(645)
Intercompany financing and advances			98,329	(195,320)
Net cash (used in) provided by financing activities			6,935	13,094
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			(50,873)	(44)
Cash and cash equivalents	19,319	0	19,319	0	70,192	44
Guarantor Subsidiaries [Member]
Consolidating Financial Statements, Captions
Net Income (Loss) Attributable to Parent	32,381	(44,877)	92,150	(83,368)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			(2,285)	(154,793)
Net cash provided by (used in) operating activities			89,865	(238,161)
Capital expenditures			(22,874)	(30,398)
Payments for (Proceeds from) Businesses and Interests in Affiliates			(5,155)
Proceeds from sale of assets				40,235
Net cash used in investing activities			(17,719)	9,837
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			0	0
Retirements and repayments of debt			4,852	15,120
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation			0	0
Intercompany financing and advances			(67,723)	243,505
Net cash (used in) provided by financing activities			(72,575)	228,385
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			(429)	61
Cash and cash equivalents	0	61	0	61	429	0
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Net Income (Loss) Attributable to Parent	5,200	4,111	20,395	12,079
Adjustments to reconcile net income to net cash provided by (used in) operating activities			30,270	27,597
Net cash provided by (used in) operating activities			50,665	39,676
Capital expenditures			(3,396)	(3,798)
Payments for (Proceeds from) Businesses and Interests in Affiliates			(387)
Proceeds from sale of assets				1,182
Net cash used in investing activities			(3,009)	(2,616)
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			45,980	45,000
Retirements and repayments of debt			51,680	56,800
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation			0	0
Intercompany financing and advances			(30,606)	(30,306)
Net cash (used in) provided by financing activities			(36,306)	(42,106)
Effect of exchange rate changes on cash			739	(2,126)
Net change in cash and cash equivalents			12,089	(7,172)
Cash and cash equivalents	$ 34,275	$ 28,603	$ 34,275	$ 28,603	$ 22,186	$ 35,775

COMMITMENTS AND CONTINGENCIES C

COMMITMENTS AND CONTINGENCIES CONTINGENCIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Gain Contingencies [Line Items]
Litigation Judgment Gain, net of expenses	$ 3,857	$ 0	$ 9,257	$ 0

RESTRUCTURING COSTS RESTRUCTURI

RESTRUCTURING COSTS RESTRUCTURING COSTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4,744	$ 2,327	$ 13,490	$ 18,206
Forecast [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					$ 15,000
Forecast [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges					$ 17,000

Uncategorized Items - a20191231

Label	Element	Value
Disposal Groups, Including Discontinued Operations [Table Text Block]	us-gaap_ScheduleOfDisposalGroupsIncludingDiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresTextBlock	3. DIVESTED OPERATIONS In December 2019, the Company completed the sale of its manufacturing operations at its Nashville, TN, facility for cash proceeds net of transaction costs of approximately $60,000 , including approximately $7,000 allocated as a premium paid by the buyer in exchange for a specified performance guarantee. Upon closing, the Company recognized a loss of approximately $64,000 , which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. The operating results of the Nashville manufacturing operations are included in Aerospace Structures through the date of divestiture. Additionally, as part of the transaction, the Company agreed to transfer to the buyer, within 120 days from the date of closing, certain defined benefit pension assets and obligations of approximately $50,000 associated with the Nashville manufacturing operations. In accordance with applicable defined benefit pension plan accounting guidance, the transfer will be treated as a settlement for purposes of the Company’s financial statements and will result in accelerated recognition of previously unrecognized actuarial losses. As a result, the Company expects to recognize a one-time settlement loss of approximately $20,000 when the transfer occurs. In September 2019, the Company completed the assignment of its E-2 Jets contract with Embraer for the manufacture of structural components for their program to AeroSpace Technologies of Korea Inc. ("ASTK"). As part of this transaction, the Company transferred certain assets and liabilities to ASTK and recognized a gain of approximately $10,000 , which is presented on the accompanying consolidated statements of operations within loss on sale of assets and businesses. In March 2019, the Company sold all of the shares of Triumph Structures – Kansas City, Inc.; Triumph Structures – Wichita, Inc.; Triumph Gear Systems – Toronto; ULC; and Triumph Northwest (The Triumph Group Operations, Inc.) (together, "Machining"). Total cash proceeds net of transaction costs for the sale of Machining was approximately $43,000 . A portion of the proceeds associated with the sale of Machining included consideration in the form of a note receivable of $10,000 . Upon closing, the Company recognized a loss of approximately $116,000 . An additional loss of approximately $3,000 was recognized during the nine months ended December 31, 2019 , as a result of working capital adjustments and additional transaction costs and is presented within loss on sale of assets and businesses on the accompanying condensed consolidated statements of operations. In March 2019, the Company sold all of the shares of (i) Triumph Fabrications - San Diego, Inc. and Triumph Fabrications - Ft. Worth, Inc. (together, "Fabrications"), and (ii) Triumph Aviation Services - NAAS Division, Inc. ("NAAS"). Total cash proceeds net of transaction costs for the sales of Fabrications and NAAS were approximately $133,000 and $18,000 , respectively. As a result of the sales of Fabrications, the Company recognized a gain of approximately $54,000 . The sale of NAAS resulted in an immaterial gain. In February 2019, the Company transitioned responsibility for the Global 7500 wing program manufacturing operations of Aerospace Structures to Bombardier at which point Bombardier assumed the program’s assets and obligations. As a result of this transfer, the Company recognized a loss of approximately $169,000 . The Company continues to provide transition services related to infrastructure support reducing in scope over the next several months, as well as a lease of the building in Red Oak, Texas, dedicated to the manufacturer of the Global 7500 wing to Bombardier. In July 2018 and August 2018, respectively, the Company sold all of the shares of Triumph Structures - East Texas, Inc. as well as all of the shares of Triumph Structures - Los Angeles, Inc., and Triumph Processing, Inc. for combined cash proceeds net of transactions costs of approximately $43,000 and a note receivable of $7,000 . The note receivable was collected in October 2018. As a result of these sales, the Company recognized losses of approximately $17,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (584,951,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	19,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(225,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(84,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(584,951,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(225,000)
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	19,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (84,000)