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Income Taxes (Summary Of Operating Loss Carryforwards) (Details)
$ in Thousands
12 Months Ended
Sep. 30, 2016
USD ($)
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 53,147
State [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards 34,688
Foreign [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards 18,459
2017-2021 [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards 3,090
2017-2021 [Member] | State [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards 6
2017-2021 [Member] | Foreign [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 3,084
2017-2021 [Member] | Minimum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2017
2017-2021 [Member] | Maximum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2021
2022-2026 [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 8,387
2022-2026 [Member] | State [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards 2,953
2022-2026 [Member] | Foreign [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 5,434
2022-2026 [Member] | Minimum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2022
2022-2026 [Member] | Maximum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2026
2027-2031 [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 31,144
2027-2031 [Member] | State [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 31,144
2027-2031 [Member] | Minimum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2027
2027-2031 [Member] | Maximum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2031
2032-2036 [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 585
2032-2036 [Member] | State [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 585
2032-2036 [Member] | Minimum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2032
2032-2036 [Member] | Maximum [Member]  
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards expiration Dec. 31, 2036
Indefinite [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 9,941
Indefinite [Member] | Foreign [Member]  
Operating Loss Carryforwards [Line Items]  
Net operating loss carry forwards $ 9,941