XML 49 R38.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Components of Income Tax Expense/(Benefit) (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2015
Nov. 30, 2014
Income Tax Disclosure [Abstract]        
Income (loss) before income tax expense (benefit) $ (728) $ 2,829 $ (1,402) $ 4,247
Non-taxable portion of change in fair value of contingent consideration 0 0 170 0
Ordinary income (loss) before income taxes (728) 2,829 (1,572) 4,247
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount [Abstract]        
Income tax expense / (benefit) based on ordinary income / (loss) at estimated tax rates (429) 1,140 (792) 1,738
Discrete tax expense (benefit):        
Adjustment for elimination of the ASC 718 APIC pool 43 330 514 685
Adjustments to prior period tax liabilities 20 21 (5) 16
Total income tax expense (benefit) $ (366) $ 1,491 $ (283) $ 2,439