Stock Based Compensation Plans (Narrative) (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended					1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended							12 Months Ended		1 Months Ended			12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2013 Minimum [Member]	Jun. 30, 2013 Maximum [Member]	Dec. 31, 2010 Restricted Stock [Member] Employees [Member]	Jun. 30, 2013 Restricted Stock [Member] Employees [Member]	Jun. 30, 2012 Restricted Stock [Member] Employees [Member]	Jun. 30, 2013 Restricted Stock [Member] Non Employee Directors [Member]	Jun. 30, 2012 Restricted Stock [Member] Non Employee Directors [Member]	Dec. 31, 2010 Performance Shares [Member]	Jun. 30, 2013 Performance Shares [Member]	Jun. 30, 2012 Performance Shares [Member]	Jun. 30, 2013 Restricted Stock and Restricted Stock Units [Member]	Jun. 30, 2012 Restricted Stock and Restricted Stock Units [Member]	Jun. 30, 2011 Restricted Stock and Restricted Stock Units [Member]	Jun. 30, 2013 2007 Plan [Member]	Dec. 06, 2007 2007 Plan [Member] Categories	Jun. 30, 2013 1998 Plan [Member]	Jun. 30, 2012 1980 Plan [Member]	Dec. 06, 2012 2010 Plan [Member]	Jun. 30, 2013 2010 Plan [Member]	Feb. 12, 2010 2010 Plan [Member]	Jun. 30, 2013 2002 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock that may be issued																		700					5,250
Common stock granted, vesting period		3 years	3 years			3 years	3 years	3 years	1 year	1 year											3 years
Number of types of awards																		5
Stock options granted to employees		217	240
Stock options granted to employees, term in years		10 years	10 years
Shares of common stock available for grant																	14					3,315
Stock options, expiration date				Aug. 31, 2013	Dec. 31, 2021														Dec. 31, 2008	Sep. 30, 2005				Dec. 31, 2012
Stock options exercised, total instrinsic value	$ 2,047	$ 690	$ 178
Restricted stock awarded and premium shares vested, common shares	9	8	11
Restricted stock awarded and premium shares vested, value	82	49	66
Non-cash restricted stock expense	11	11	33
Non-cash stock option plan expense	324	333	186
Stock-based compensation expense related to modification of certain stock options		11
Total unrecognized compensation cost related to option awards	241
Per-share weighted-average fair value of stock options granted during the period		$ 2.07	$ 2.88
Common stock granted, shares						62	120	103	25	38	62	84	49
Upper limit of target grant, shares											93	126	73
Performance-vested restricted stock units, vesting percentage											100.00%	100.00%	100.00%
Non-cash stock-based compensation expense	1,788	1,168	854											1,453	824	635
Remaining stock-based compensation expense														$ 1,841
Remaining stock-based compensation expense, period for recognition														1 year 4 months 24 days