Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2014
Operating Loss Carryforwards [Line Items]
Portion of tax loss carryforward offset by unrealized stock compensation deduction	$ 5
Liability for uncertain tax positions, excluding any related interest and penalties	105		$ 56
Portion of liability related to uncertain tax position which, if recognized, would impact the effective tax rate	105
Accrued (reversal of accrued) interest	(22)
Interest and penalties from continuing operations	11
Undistributed earnings of foreign subsidiaries	10,843
Possible Future Adjustment
Operating Loss Carryforwards [Line Items]
Reversal of uncertain tax positions, reasonably possible		$ 36
Accrued (reversal of accrued) interest		$ 5
Revenue commissioners, Ireland | Subsidiaries
Operating Loss Carryforwards [Line Items]
Non US tax loss carryforward	5,470
Foreign tax authority
Operating Loss Carryforwards [Line Items]
Non US tax loss carryforward	517
Domestic tax authority
Operating Loss Carryforwards [Line Items]
Non US tax loss carryforward	67
State tax authority
Operating Loss Carryforwards [Line Items]
Non US tax loss carryforward	126
State and local jurisdiction
Operating Loss Carryforwards [Line Items]
Non US tax loss carryforward	$ 3,212