Changes in Carrying Amount of Goodwill by Segment (Parenthetical) (Detail) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2014	Dec. 31, 2013		Dec. 31, 2008
Disclosure Changes In Carrying Amount Of Goodwill By Segment [Abstract]
Non-cash pretax charge of goodwill		$ 259,732,000	$ 259,732,000	[1]	$ 241,000,000
Goodwill impairment charge	$ 18,700,000

[1] A non-cash pretax impairment charge of approximately $241.0 million was recorded to reduce the carrying value of goodwill to its estimated fair value in the fourth quarter of 2008 for its nurse and allied staffing business segment. The majority of the goodwill impairment was attributable to the Company’s initial capitalization in 1999, which was accounted for as an asset purchase, and subsequent nurse staffing acquisitions made through 2003. In addition, in the second quarter of 2012, a non-cash pretax impairment charge of approximately $18.7 million was recorded for the Company’s nurse and allied staffing reporting unit.