Goodwill and Identifiable Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

The following table provides information regarding changes in goodwill (in thousands):

	Aviation Segment		Marine Segment		Land Segment		Total


As of December 31, 2011	$	102,509	$	70,522	$	173,215	$	346,246
2012 acquisitions		8,028		—		115,165		123,193
Adjustment of purchase price allocations – 2011 acquisitions		(1,106)		—		2,863		1,757
Foreign currency translation of non-USD functional currency subsidiary goodwill		(99)		(591)		—		(690)

As of December 31, 2012		109,332		69,931		291,243		470,506
2013 acquisitions		—		—		16,077		16,077
Adjustment of purchase price allocations – 2012 acquisitions		6,500		—		(8,506)		(2,006)
Foreign currency translation of non-USD functional currency subsidiary goodwill		(325)		(843)		182		(986)

As of December 31, 2013	$	115,507	$	69,088	$	298,996	$	483,591

The following table provides information about our identifiable intangible assets (in thousands):

	As of December 31, 2013						As of December 31, 2012


	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount	Accumulated Amortization		Net

Intangible assets subject to amortization:
Customer relationships	$	188,276	$	79,688	$	108,588	$173,376	$	61,562	$	111,814
Supplier agreements		33,648		7,310		26,338	33,248		5,531		27,717
Others		19,738		8,634		11,104	19,878		6,143		13,735

		241,662		95,632		146,030	226,502		73,236		153,266
Intangible assets not subject to amortization:
Trademark/trade name rights		21,172		—		21,172	19,007		—		19,007

	$	262,834	$	95,632	$	167,202	$245,509	$	73,236	$	172,273

The future estimated amortization of our identifiable intangible assets is as follows (in thousands):