Segment Reporting (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 segment customer
Segment Reporting [Abstract]
Number of contracts or customers accounted for more than 10% of the Company's total revenues at the consolidated or reportable segment level	0
Number of operating segments	4
Number of reportable segments	4
Number of geographic operating segments	3
Accumulated impairment losses associated with goodwill	$ 0