Stock Based Compensation (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended							1 Months Ended
	Sep. 30, 2013 Restricted Stock [Member] Employees [Member]	Jun. 30, 2013 Restricted Stock [Member] Employees [Member]	Jun. 30, 2013 Restricted Stock [Member] Non Employee Directors [Member]	Sep. 30, 2013 Performance Shares [Member]	Jun. 30, 2013 Performance Shares [Member]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member] Minimum [Member]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member] Maximum [Member]	Sep. 30, 2013 Restricted Stock and Restricted Stock Units [Member]	Sep. 30, 2012 Restricted Stock and Restricted Stock Units [Member]	Sep. 30, 2013 Employee Stock Option [Member]	Sep. 30, 2012 Employee Stock Option [Member]	Dec. 06, 2012 2010 Plan [Member]	Sep. 30, 2013 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock that may be issued														5,250
Common stock granted, vesting period	3 years	3 years	1 year										3 years
Common stock granted, shares	199	120	25	131	84	32
Common stock granted, vesting year							2013-12	2015-07
Upper limit of target grant, shares				196	126
Performance-vested restricted stock units, vesting percentage				100.00%	100.00%
Stock-based compensation expense									$ 716	$ 358	$ 79	$ 83
Total unrecognized compensation cost									6,544
Stock options granted, shares											0	0
Total unrecognized compensation cost related to option awards											$ 158