Operating Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012	Sep. 30, 2011
Segment Operating Data
Revenue	$ 116,128		$ 107,634		$ 234,424	$ 208,076
Operating income	24,344		31,567		47,851	60,386
QSI Dental Division [Member]
Segment Operating Data
Revenue	4,846		4,512		9,800	9,607
Operating income	679		620		1,148	1,898
NextGen Division [Member]
Segment Operating Data
Revenue	87,328		82,489		173,521	157,114
Operating income	33,897		34,310		62,737	63,635
Hospital Solutions Division [Member]
Segment Operating Data
Revenue	8,172		8,453		19,536	15,744
Operating income	(1,165)		2,451		1,182	5,513
RCM Services Division [Member]
Segment Operating Data
Revenue	15,782		12,180		31,567	25,611
Operating income	1,789		1,098		3,642	3,139
Unallocated corporate expense [Member]
Segment Operating Data
Operating income	$ (10,856)	[1]	$ (6,912)	[1]	$ (20,858)	$ (13,799)

[1] Unallocated corporate expense includes eliminations relating to QSIH revenues and related expenses included in the results of operating segments. For the six months ended September 30, 2012 and 2011, eliminations were not significant.