Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 Sale of Halloween Portion of PMG's Business [Member]	Sep. 05, 2012 Sale of Halloween Portion of PMG's Business [Member]
Accounting Policies [Line Items]
Sales price paid						$ 2,281,000
Incurred transaction cost		523,000			523,000
Yielding net proceeds		1,758,000
Depreciation expense	$ 1,555,000	$ 1,492,000	$ 3,046,000	$ 3,050,000
Effective antidilutive securities excluded from computation of net income per share	150,000	264,000	150,000	264,000