Noncontrolling Interests (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]
Balance at March 31, 2014			$ 0
Additions due to acquisition of controlling interest in ISSC			52,467
Net loss attributable to noncontrolling interests	(1,603)	0	(1,603)	0
Other comprehensive loss attributable to noncontrolling interests	(1,015)	0	(1,015)	0
Purchase of additional interests			(1,817)
Other			755
Balance at September 30, 2014	$ 48,787		$ 48,787