Summary of Significant Accounting Policies - Corrections to Consolidated Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 144,809	$ 143,129	$ 280,793	$ 272,658
Cost of goods sold	91,667	88,755	179,530	170,279
Gross profit	53,142	54,374	101,263	102,379
Selling expenses	39,599	38,322	78,049	74,936
General and administrative expenses	9,860	10,329	16,869	18,829
Net losses (gains) from sales of assets	178	73	239	(50)
Operating expenses	49,637	48,724	95,157	93,715
Income from operations	3,505	5,650	6,106	8,664
Dividend income	291	258	585	526
Interest income	90	110	179	218
Interest expense	(208)	(393)	(415)	(765)
Other, net	(530)	(514)	(594)	(1,420)
Total other expense	(357)	(539)	(245)	(1,441)
Income before taxes	3,148	5,111	5,861	7,223
Income tax expense	252	402	450	709
Net income	2,896	4,709	5,411	6,514
Previously Reported
Net sales				270,712
Cost of goods sold				165,802
Gross profit				104,910
Selling expenses				76,326
General and administrative expenses				19,970
Net losses (gains) from sales of assets				0
Operating expenses				96,296
Income from operations				8,614
Dividend income				526
Interest income				218
Interest expense				(765)
Other, net				(1,370)
Total other expense				(1,391)
Income before taxes				7,223
Income tax expense				709
Net income				6,514
Adjustments
Net sales				1,946
Cost of goods sold				4,477
Gross profit				(2,531)
Selling expenses				(1,390)
General and administrative expenses				(1,141)
Net losses (gains) from sales of assets				(50)
Operating expenses				(2,581)
Income from operations				50
Dividend income				0
Interest income				0
Interest expense				0
Other, net				(50)
Total other expense				(50)
Income before taxes				0
Income tax expense				0
Net income				$ 0