Disposition of Product Line - Schedule of Aforementioned Restructuring (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Sep. 30, 2014	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Cash paid, net of sub-lease income		$ 4
Sale of Halloween Portion of PMG's Business [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		224
Cash paid, net of sub-lease income	30	4
Non-cash adjustments		(109)
Restructuring reserve, ending balance	119	119
Facility Costs [Member] | Sale of Halloween Portion of PMG's Business [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		112
Cash paid, net of sub-lease income		35
Non-cash adjustments		(109)
Restructuring reserve, ending balance	38	38
Professional Fees and Other Costs [Member] | Sale of Halloween Portion of PMG's Business [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance		112
Cash paid, net of sub-lease income		(31)
Non-cash adjustments		0
Restructuring reserve, ending balance	$ 81	$ 81