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OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Mar. 31, 2016
Operations, Basis Of Presentation And Summary Of Significant Accounting Policies [Abstract]  
Rollforward schedule of allowance for doubtful accounts
The following table is a rollforward of the allowance for doubtful accounts, including affiliates and non-affiliates (in thousands):
     
 
Fiscal Year Ended March 31,
 
2016
 
2015
 
2014
Balance – beginning of fiscal year
$
859

 
$
5,074

 
$
5,079

Additional allowances
6,638

 
1,050

 
87

Write-offs and collections
(1,935
)
 
(5,265
)
 
(92
)
Balance – end of fiscal year
$
5,562

 
$
859

 
$
5,074
Rollforward schedule of inventory allowance
The following table is a rollforward of the allowance related to dormant, obsolete and excess inventory (in thousands):
     
 
Fiscal Year Ended March 31,
 
2016
 
2015
 
2014
Balance – beginning of fiscal year
$
45,414

 
$
47,298

 
$
31,504

Impairment of inventories
5,439

 
7,167

 
12,669

Additional allowances
192

 
4,867

 
6,807

Inventory disposed and scrapped
(22,428
)
 
(10,125
)
 
(6,096
)
Foreign currency effects
(854
)
 
(3,793
)
 
2,414

Balance – end of fiscal year
$
27,763

 
$
45,414

 
$
47,298
Schedule of goodwill
Goodwill of $30.0 million and $75.6 million as of March 31, 2016 and 2015, respectively, related to our reporting units were as follows (in thousands):
 
Europe Caspian
 
Asia Pacific
 
Africa
 
Corporate and other
 
Total
March 31, 2014
$
40,201

 
$
—

 
$
6,177

 
$
10,302

 
$
56,680

Foreign currency translation
(4,500
)
 
(461
)
 
(231
)
 
(112
)
 
(5,304
)
Airnorth acquisition
—

 
24,252

 
—

 
—

 
24,252

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

 
_____________
(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 $42.2 million and $0.6 million as of March 31, 2016 and 2015, respectively, related to our reporting units were as follows (in thousands):
 
Europe Caspian
 
Africa
 
Corporate and other
 
Americas
 
Total
March 31, 2014
$
—

 
$
—

 
$
—

 
$
(576
)
 
$
(576
)
Impairments
—

 
—

 
—

 
—

 
—

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
)
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, 2014
$
7,129

 
$
12,007

 
$
5,326

 
$
1,339

 
$
827

 
$
26,628

Foreign currency translation
(76
)
 
(1,238
)
 
(542
)
 
(160
)
 
(69
)
 
(2,085
)
Airnorth acquisition
1,112

 
2,287

 
364

 
—

 
—

 
3,763

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

 
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated Amortization
March 31, 2014
$
(6,932
)
 
$
(928
)
 
$
—

 
$
—

 
$
(469
)
 
$
(8,329
)
Amortization expense
(467
)
 
(655
)
 
(323
)
 
(244
)
 
(73
)
 
(1,762
)
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
)
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average remaining contractual life, in years
0.4

 
7.0

 
14.0

 
2.8

 
2.6

 
6.2
Schedule of expected amortization expense
Future amortization expense of intangible assets for each of the years ending March 31 are as follows (in thousands):
                 
2017
$
999

2018
936

2019
806

2020
503

2021
503

Thereafter
3,732

 
$
7,479