Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 799,635	$ 829,546	$ 1,877,127	$ 1,879,603
Cost of goods sold	581,450	603,640	1,338,136	1,346,705
Gross profit	218,185	225,906	538,991	532,898
Selling, general and administrative expenses	139,303	140,609	383,871	371,529
Net advertising expense	38,715	39,488	98,085	90,148
Depreciation and amortization expense	10,416	8,765	29,673	24,236
Asset impairment charges	504	0	504	0
Income from operations	29,247	37,044	26,858	46,985
Other expense (income):
Interest expense	704	881	1,692	1,964
Interest income	(3)	(1)	(8)	(5)
Total other expense	701	880	1,684	1,959
Income before income taxes	28,546	36,164	25,174	45,026
Income tax expense	11,157	13,686	9,726	17,283
Net income	$ 17,389	$ 22,478	$ 15,448	$ 27,743
Net income per share
Basic (in dollars per share)	$ 0.51	$ 0.60	$ 0.44	$ 0.73
Diluted (in dollars per share)	$ 0.51	$ 0.60	$ 0.44	$ 0.72
Weighted average shares outstanding-basic	33,934,383	37,154,446	35,099,660	38,167,304
Weighted average shares outstanding-diluted	33,985,113	37,603,767	35,168,497	38,522,707