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Liquidity (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Mar. 31, 2016
Jun. 30, 2015
Mar. 31, 2015
Liquidity [Line Items]        
Cash $ 9,412 $ 11,231 $ 6,180 $ 7,069
Revolving Line of Credit        
Liquidity [Line Items]        
Outstanding 3,000      
Revolving Credit Facility        
Liquidity [Line Items]        
Revolving facility $ 3,300