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OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Mar. 31, 2017
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]  
Schedule of valuation and qualifying accounts disclosure
The following table is a rollforward of the allowance related to dormant, obsolete and excess inventory (in thousands):
     
 
Fiscal Year Ended March 31,
 
2017
 
2016
 
2015
Balance – beginning of fiscal year
$
27,763

 
$
45,414

 
$
47,298

Impairment of inventories
7,572

 
5,439

 
7,167

Additional allowances
1,617

 
192

 
4,867

Inventory disposed and scrapped
(14,635
)
 
(22,428
)
 
(10,125
)
Foreign currency effects
(803
)
 
(854
)
 
(3,793
)
Balance – end of fiscal year
$
21,514

 
$
27,763

 
$
45,414

The following table is a rollforward of the allowance for doubtful accounts from non-affiliates (in thousands):
     
 
Fiscal Year Ended March 31,
 
2017
 
2016
 
2015
Balance – beginning of fiscal year
$
5,562

 
$
859

 
$
5,074

Additional allowances
575

 
6,638

 
1,050

Write-offs and collections
(1,639
)
 
(1,935
)
 
(5,265
)
Balance – end of fiscal year
$
4,498

 
$
5,562

 
$
859
Schedule of goodwill
Goodwill of $19.8 million and $30.0 million as of March 31, 2017 and 2016, respectively, related to our reporting units were as follows (in thousands):
 
Europe Caspian
 
Asia Pacific
 
Africa
 
Corporate and other
 
Total
March 31, 2015
$
35,701

 
$
23,791

 
$
5,946

 
$
10,190

 
$
75,628

Purchase price adjustments to previously acquired goodwill (1)
(170
)
 
(3,991
)
 
—

 
—

 
(4,161
)
Foreign currency translation
(328
)
 
164

 
233

 
33

 
102

Impairments
(25,177
)
 
—

 
(6,179
)
 
(10,223
)
 
(41,579
)
March 31, 2016
10,026

 
19,964

 
—

 
—

 
29,990

Foreign currency translation
(1,320
)
 
(166
)
 
—

 
—

 
(1,486
)
Impairments
(8,706
)
 
—

 
—

 
—

 
(8,706
)
March 31, 2017
$
—

 
$
19,798

 
$
—

 
$
—

 
$
19,798

 
_____________
(1) 
Relates to the correction of an immaterial error related to the acquisitions of Airnorth and Eastern. We determined that the accounting treatment for the supplemental rent for leased aircraft at Airnorth and Eastern was incorrectly being expensed in advance of a maintenance event occurring. To correct this error, we reduced goodwill by $4.2 million, increased prepaid expenses and other current assets by $2.7 million, increased deferred tax liabilities by $3.1 million, decreased accrued maintenance and repairs by $3.6 million and increased direct costs $1.0 million. This error is not material to our consolidated financial statements for fiscal year 2016 or our previously reported consolidated financial statements for any period.
Accumulated goodwill impairment of $50.9 million and $42.2 million as of March 31, 2017 and 2016, respectively, related to our reporting units were as follows (in thousands):
 
Europe Caspian
 
Africa
 
Corporate and other
 
Americas
 
Total
March 31, 2015
$
—

 
$
—

 
$
—

 
$
(576
)
 
$
(576
)
Impairments
(25,177
)
 
(6,179
)
 
(10,223
)
 
—

 
(41,579
)
March 31, 2016
(25,177
)
 
(6,179
)
 
(10,223
)
 
(576
)
 
(42,155
)
Impairments
(8,706
)
 
—

 
—

 
—

 
(8,706
)
March 31, 2017
$
(33,883
)
 
$
(6,179
)
 
$
(10,223
)
 
$
(576
)
 
$
(50,861
)
Schedule of other intangible assets
Intangible assets by type were as follows (in thousands):
 
Client
contracts
 
Client
relationships
 
Trade name and trademarks
 
Internally developed software
 
Licenses
 
Total
 
 
 
 
 
 
 
 
 
 
 
 
 
Gross Carrying Amount
March 31, 2015
$
8,165

 
$
13,056

 
$
5,148

 
$
1,179

 
$
758

 
$
28,306

Foreign currency translation
5

 
(277
)
 
(140
)
 
(30
)
 
(6
)
 
(448
)
March 31, 2016
8,170

 
12,779

 
5,008

 
1,149

 
752

 
27,858

Foreign currency translation
(1
)
 
(27
)
 
(525
)
 
(87
)
 
(6
)
 
(646
)
March 31, 2017
$
8,169

 
$
12,752

 
$
4,483

 
$
1,062

 
$
746

 
$
27,212

 
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated Amortization
March 31, 2015
$
(7,399
)
 
$
(1,583
)
 
$
(323
)
 
$
(244
)
 
$
(542
)
 
$
(10,091
)
Impairments
—

 
(8,086
)
 
—

 
—

 
—

 
(8,086
)
Amortization expense
(663
)
 
(931
)
 
(313
)
 
(236
)
 
(59
)
 
(2,202
)
March 31, 2016
(8,062
)
 
(10,600
)
 
(636
)
 
(480
)
 
(601
)
 
(20,379
)
Amortization expense
(93
)
 
(471
)
 
(272
)
 
(205
)
 
(56
)
 
(1,097
)
March 31, 2017
$
(8,155
)
 
$
(11,071
)
 
$
(908
)
 
$
(685
)
 
$
(657
)
 
$
(21,476
)
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average remaining contractual life, in years
0.2

 
4.6

 
13.1

 
1.8

 
1.6

 
5.8
Schedule of expected amortization expense
Future amortization expense of intangible assets for each of the years ending March 31 are as follows (in thousands):
                 
2018
$
837

2019
715

2020
442

2021
442

2022
442

Thereafter
2,858

 
$
5,736
Schedule of interest (expense), net
During fiscal years 2017, 2016 and 2015 interest expense, net consisted of the following (in thousands):
 
 
Fiscal Year Ended
 
 
 
2017
 
2016
 
2015
 
 
Interest income
$
943

 
$
1,058

 
$
956

 
 
Interest expense
(50,862
)
 
(35,186
)
 
(30,310
)
 
 
Interest expense, net
$
(49,919
)
 
$
(34,128
)
 
$
(29,354
)