Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation - Schedule of stock-based awards granted (Details)

v2.4.1.9
Share-Based Compensation - Schedule of stock-based awards granted (Details)
6 Months Ended
Mar. 31, 2015
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options granted in period 360,903us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
Time-based stock awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted in period 49,219us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= hi_TimeBasedStockAwardsMember
Performance-based stock awards (maximum that can be earned)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock awards granted in period 474,599us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember