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Summary of Business and Significant Accounting Policies - Impact of Accounting Change Retrospectively Adopted on Condensed Consolidated Statement of Comprehensive Income (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Net loss $ 684 $ (3,822) [1] $ 8,372 [1]
Comprehensive loss 266 (3,772) [1] 8,168 [1]
As Previously Reported
      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Net loss   (4,917) 8,511
Comprehensive loss   (4,867) 8,307
Adjustment
      
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]      
Net loss   1,095 (139)
Comprehensive loss   $ 1,095 $ (139)
[1] As adjusted, see Note 1