Goodwill and Intangible Assets

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

5. Goodwill and Intangible Assets

Goodwill

The change in the carrying amounts of indefinite-lived goodwill was as follows (in thousands) by segment:

	Commercial		Public Sector		Canada		Total
Balance at December 31, 2016	$	69,735	$	8,322	$	5,331	$	83,388
Foreign currency translation		—		—		193		193
Balance at June 30, 2017	$	69,735	$	8,322	$	5,524	$	83,581

Intangible Assets

The following table sets forth the amounts recorded for intangible assets (in thousands):

	Weighted Average Estimated		At June 30, 2017							At December 31, 2016
	Useful Lives (years)		Gross Amount			Accumulated Amortization		Net Amount		Gross Amount			Accumulated Amortization		Net Amount
Patent, trademarks, trade names & URLs		4	$	7,722	(1)	$	2,541	$	5,181	$	7,691	(1)	$	1,901	$	5,790
Customer relationships		15		13,456			6,634		6,822		13,369			5,480		7,889
Non-compete agreements		4		2,369			1,269		1,100		2,361			966		1,395
Total intangible assets			$	23,547		$	10,444	$	13,103	$	23,421		$	8,347	$	15,074

(1) Includes $2.9 million of trademarks with indefinite useful lives that are not amortized.

Amortization expense for intangible assets was approximately $1.0 million and $1.4 million for the three months ended June 30, 2017 and 2016, and $2.1 million and $3.0 million for the six months ended June 30, 2017 and 2016. Estimated amortization expense for intangible assets as of June 30, 2017 in each of the next five years and thereafter is as follows: $2.1 million in the remainder of 2017, $3.0 million in 2018, $1.8 million in 2019, $1.3 million in 2020, $0.5 million in 2021 and $1.5 million thereafter.