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OPERATIONS, BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Mar. 31, 2015
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,
 
2015
 
2014
 
2013
Balance – beginning of fiscal year
$
5,074

 
$
5,079

 
$
243

Additional allowances
1,050

 
87

 
4,887

Write-offs and collections
(5,265
)
 
(92
)
 
(51
)
Balance – end of fiscal year
$
859

 
$
5,074

 
$
5,079
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,
 
2015
 
2014
 
2013
Balance – beginning of fiscal year
$
47,298

 
$
31,504

 
$
34,364

Impairment of inventories
7,167

 
12,669

 
—

Additional allowances
4,867

 
6,807

 
8,479

Inventory disposed and scrapped
(10,125
)
 
(6,096
)
 
(10,053
)
Foreign currency effects
(3,793
)
 
2,414

 
(1,286
)
Balance – end of fiscal year
$
45,414

 
$
47,298

 
$
31,504
Schedule of Goodwill
Goodwill totaling $75.6 million and $56.7 million as of March 31, 2015 and 2014, respectively, relates to our business units as follows (in thousands):
 
Europe
 
Bristow
Academy
 
Australia
 
West
Africa
 
Other
International
 
Total
March 31, 2013
$
11,883

 
$
10,212

 
$
—

 
$
6,226

 
$
576

 
$
28,897

Foreign currency translation
1,839

 
90

 
—

 
(49
)
 
—

 
1,880

Eastern Airways acquisition
26,479

 
—

 
—

 
—

 
—

 
26,479

Impairments
—

 
—

 
—

 
—

 
(576
)
 
(576
)
March 31, 2014
40,201

 
10,302

 
—

 
6,177

 
—

 
56,680

Foreign currency translation
(4,500
)
 
(112
)
 
(461
)
 
(231
)
 
—

 
(5,304
)
Airnorth acquisition
—

 
—

 
24,252

 
—

 
—

 
24,252

March 31, 2015
$
35,701

 
$
10,190

 
$
23,791

 
$
5,946

 
$
—

 
$
75,628
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, 2013
$
7,187

 
$
1,730

 
$
—

 
$
—

 
$
833

 
$
9,750

Foreign currency translation
(58
)
 
(14
)
 
—

 
—

 
(6
)
 
(78
)
Eastern Airways acquisition
—

 
10,291

 
5,326

 
1,339

 
—

 
16,956

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

 
 
 
 
 
 
 
 
 
 
 
 
 
Accumulated Amortization
March 31, 2013
$
(5,662
)
 
$
(758
)
 
$
—

 
$
—

 
$
(388
)
 
$
(6,808
)
Amortization expense
(1,270
)
 
(170
)
 
—

 
—

 
(81
)
 
(1,521
)
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
)
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average remaining contractual life, in years
1.6

 
17.5

 
14.9

 
3.8

 
3.0

 
10.3
Schedule of Expected Amortization Expense
Future amortization expense of intangible assets for each of the years ending March 31 are as follows (in thousands):
                 
 
2016
$
2,114

 
2017
1,553

 
2018
1,472

 
2019
1,200

 
2020
996

 
Thereafter
10,880

 
 
$
18,215