Goodwill

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

GOODWILL:

The changes in the carrying amount of goodwill for the six months ended June 30, 2017 and for the year ended December 31, 2016 were as follows (dollars in thousands):

	North American Operations		Australian Operations		U.K./European Operations			Total Operations
Balance at January 1, 2017:
Goodwill, gross	$	632,937	$	339,865	$	167,276		$	1,140,078
Accumulated impairment losses	—		—		(14,482		)	(14,482		)
Goodwill	$	632,937	$	339,865	$	152,794		$	1,125,596
Changes during the period:
Goodwill acquired	4,083		—		13,264			17,347
Acquisition accounting adjustments	1,140		—		—			1,140
Currency translation adjustment	770		21,109		10,219			32,098
Balance at June 30, 2017:
Goodwill, gross	$	638,930	$	360,974	$	190,759		$	1,190,663
Accumulated impairment losses	—		—		(14,482		)	(14,482		)
Goodwill	$	638,930	$	360,974	$	176,277		$	1,176,181

	North American Operations		Australian Operations			U.K./European Operations			Total Operations
Balance at January 1, 2016	$	605,234	$	39,312		$	182,029		$	826,575
Changes during the period:
Goodwill acquired	26,969		308,267			—			335,236
Acquisition accounting adjustments	176		168			9,736			10,080
Goodwill impairment	—		—			(14,482		)	(14,482		)
Currency translation adjustment	558		(7,882		)	(24,489		)	(31,813		)
Balance at December 31, 2016:
Goodwill, gross	$	632,937	$	339,865		$	167,276		$	1,140,078
Accumulated impairment losses	—		—			(14,482		)	(14,482		)
Goodwill	$	632,937	$	339,865		$	152,794		$	1,125,596

The acquired goodwill for the six months ended June 30, 2017 was related to the acquisitions of Pentalver in our U.K./European Operations segment and HOG in our North American Operations segment. The acquired goodwill for the year ended December 31, 2016 was related to the acquisitions of P&W in our North American Operations and GRail in our Australian Operations segment. See Note 2, Changes in Operations, for additional information regarding the P&W, GRail, Pentalver and HOG acquisitions.

The goodwill impairment recorded for the year ended December 31, 2016 resulted from the write-off of goodwill ascribed to the Company's ERS business within its U.K./European Operations segment. See Note 2, Changes in Operations, for additional information regarding ERS.