Acquisition - Allocation of Purchased Assets and Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Children's Choice Learning Centers [Member]	Sep. 30, 2013 Children's Choice Learning Centers [Member]	Jun. 30, 2014 Scenario, Adjustment [Member] Children's Choice Learning Centers [Member]
Loans At Acquisition Date [Line Items]
Accounts receivable			$ 855	$ 981	$ (126)
Prepaids and other assets			745	334	411
Fixed assets			6,172	5,637	535
Intangible assets, primarily customer relationships			11,610	12,800	(1,190)
Goodwill	1,104,406	1,096,283	36,515	38,818	(2,303)
Total assets acquired			55,897	58,570	(2,673)
Accounts payable and accrued expenses			(4,242)	(3,441)	(801)
Deferred revenue and parent deposits			(867)	(885)	18
Total liabilities assumed			(5,109)	(4,326)	(783)
Purchase price			$ 50,788	$ 54,244	$ (3,456)