Acquired Intangible Assets, Capitalized Software Development Costs, and Goodwill (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Acquired Intangible Assets and Capitalized Software Development Costs

Our acquired intangible assets and capitalized software development costs consisted of the following:

	March 31, 2015						December 31, 2014
	Gross						Gross
	Carrying		Accumulated				Carrying		Accumulated
	Amount		Amortization		Net		Amount		Amortization		Net
Acquired intangible assets and capitalized software development costs:
Acquired intangible assets, including customer lists	$	31,176	$	14,897	$	16,279	$	31,176	$	13,970	$	17,206
Capitalized software development costs		8,086		3,459		4,627		7,680		3,072		4,608
Total acquired intangible assets and capitalized software development costs	$	39,262	$	18,356	$	20,906	$	38,856	$	17,042	$	21,814

Estimated Future Amortization Expense

Estimated future amortization expense:

Year ending December 31, 2015	$	4,062
Year ending December 31, 2016		5,142
Year ending December 31, 2017		4,245
Year ending December 31, 2018		2,985
Year ending December 31, 2019		2,280
Thereafter		2,192
Total estimated future amortization expense	$	20,906

Balances and Changes in Amount of Goodwill

The carrying amount of goodwill is as follows:

	Commercial		Government
	Segment		Segment		Total
Balance as of March 31, 2015 and December 31, 2014	$	49,945	$	54,296	$	104,241