Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND ACCOUNTING POLICIES (Tables)

v3.8.0.1
NATURE OF OPERATIONS AND ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Deferred Revenues
Deferred revenues and related activity during the year ended December 31, 2015 were as follows (in thousands):
 
 
2015
Balance at beginning of period
 
$
31,047

Revenues deferred during period
 
32,531

Revenues recognized during period
 
(21,446
)
Elimination due to consolidation
 
(42,132
)
Balance at end of period
 
$
—

Schedule of Allowance for Doubtful Accounts
Allowance for doubtful accounts for the years ended December 31, 2017, 2016 and 2015 were as follows (in thousands):
 
 
2017
 
2016
 
2015
Balance at beginning of period
 
$
1,219

 
$
2,103

 
$
1,955

Additional allowances charged to expense
 
144

 
441

 
1,058

Additional allowance due to consolidation
 
—

 
—

 
577

Recovery of previously reserved accounts
 
(82
)
 
(1,086
)
 
(124
)
Write-offs
 
(68
)
 
(474
)
 
(1,354
)
Foreign currency adjustments
 
(17
)
 
235

 
(9
)
Balance at end of period
 
$
1,196

 
$
1,219

 
$
2,103

Schedule of Inventory Allowance
The following table is a roll forward of the allowance related to obsolete and excess inventory for the years ended December 31, 2017, 2016 and 2015 (in thousands):
 
 
2017
 
2016
 
2015
Balance at beginning of period
 
$
4,012

 
$
4,821

 
$
5,091

Additional allowances, net (1)
 
(273
)
 
(809
)
 
(270
)
Balance at end of period
 
$
3,739

 
$
4,012

 
$
4,821

Schedule of Estimated Useful Life for New Property and Equipment
As of December 31, 2017, the estimated useful life (in years) of the Company’s categories of new property and equipment was as follows:
Helicopters (estimated salvage value at 40% of cost)
 
15

Machinery, equipment and spares
 
5-7

Buildings and leasehold improvements
 
10-30

Furniture, fixtures, vehicles and other
 
3-5