Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Common Stock [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Additional Paid-in Capital [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
AOCI Attributable to Parent [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Treasury Stock [Member]
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Treasury Stock [Member]
Total
Balance, September 30, 2019 (in shares) at Sep. 30, 2018       13,459,708           13,459,708          
Balance (Accounting Standards Update 2014-09 [Member]) at Sep. 30, 2018 $ 173,000   $ 173,000                        
Balance (Accounting Standards Update 2016-01 [Member]) at Sep. 30, 2018 (10,000) $ 10,000                          
Balance at Sep. 30, 2018       $ 135,000 $ 68,551,000 $ 80,997,000 $ 45,000 $ (67,128,000) $ 82,600,000 $ 135,000 $ 68,551,000 $ 80,834,000 $ 35,000 $ (67,128,000) $ 82,427,000
Net Income (Loss)                       1,275,000     1,275,000
Unrealized gain (loss) on debt securities, net                         135,000   135,000
Foreign currency translation, net                         80,000   80,000
Net income                       1,275,000     1,275,000
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                         80,000   80,000
Stock based compensation expense                     7,000       7,000
Unrealized gain (loss) on debt securities, net                         135,000   135,000
Balance at Dec. 31, 2018                   $ 135,000 68,558,000 82,272,000 260,000 (67,128,000) 84,097,000
Balance (in shares) at Dec. 31, 2018                   13,459,708          
Balance, September 30, 2019 (in shares) at Sep. 30, 2018       13,459,708           13,459,708          
Balance (Accounting Standards Update 2014-09 [Member]) at Sep. 30, 2018 173,000   $ 173,000                        
Balance (Accounting Standards Update 2016-01 [Member]) at Sep. 30, 2018 $ (10,000) $ 10,000                          
Balance at Sep. 30, 2018       $ 135,000 $ 68,551,000 $ 80,997,000 $ 45,000 $ (67,128,000) $ 82,600,000 $ 135,000 68,551,000 80,834,000 35,000 (67,128,000) 82,427,000
Net Income (Loss)                             3,048,000
Amount reclassified from other comprehensive income                            
Foreign currency translation, net                             36,000
Net income                             3,048,000
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                             36,000
Balance at Mar. 31, 2019                   $ 135,000 68,558,000 84,045,000 304,000 (67,128,000) 85,914,000
Balance (in shares) at Mar. 31, 2019                   13,459,708          
Balance, September 30, 2019 (in shares) at Dec. 31, 2018                   13,459,708          
Balance at Dec. 31, 2018                   $ 135,000 68,558,000 82,272,000 260,000 (67,128,000) 84,097,000
Net Income (Loss)                   1,773,000 1,773,000
Unrealized gain (loss) on debt securities, net                   88,000 88,000
Amount reclassified from other comprehensive income                            
Foreign currency translation, net                   (44,000) (44,000)
Net income                   1,773,000 1,773,000
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                   (44,000) (44,000)
Unrealized gain (loss) on debt securities, net                   88,000 88,000
Balance at Mar. 31, 2019                   $ 135,000 68,558,000 84,045,000 304,000 (67,128,000) 85,914,000
Balance (in shares) at Mar. 31, 2019                   13,459,708          
Balance, September 30, 2019 (in shares) at Dec. 31, 2018                   13,459,708          
Balance at Dec. 31, 2018                   $ 135,000 68,558,000 82,272,000 260,000 (67,128,000) 84,097,000
Net Income (Loss)                             6,910,000
Net income                             6,910,000
Balance at Sep. 30, 2019                   $ 135,000 68,558,000 87,907,000 276,000 (67,972,000) 88,904,000
Balance (in shares) at Sep. 30, 2019                   13,459,708          
Net Income (Loss)                       1,045,000     1,045,000
Unrealized gain (loss) on debt securities, net                   (128,000) (128,000)
Amount reclassified from other comprehensive income                   122,000 122,000
Foreign currency translation, net                         (44,000)   (44,000)
Net income                       1,045,000     1,045,000
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                         (44,000)   (44,000)
Unrealized gain (loss) on debt securities, net                   (128,000) (128,000)
Balance at Dec. 31, 2019                   $ 135,000 68,558,000 88,952,000 226,000 (67,972,000) 89,899,000
Balance (in shares) at Dec. 31, 2019                   13,459,708          
Balance, September 30, 2019 (in shares) at Sep. 30, 2019                   13,459,708          
Balance at Sep. 30, 2019                   $ 135,000 68,558,000 87,907,000 276,000 (67,972,000) 88,904,000
Net Income (Loss)                             973,000
Amount reclassified from other comprehensive income                             127,000
Foreign currency translation, net                             122,000
Net income                             973,000
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                             122,000
Balance at Mar. 31, 2020                   $ 135,000 68,558,000 88,880,000 418,000 (67,972,000) 90,019,000
Balance (in shares) at Mar. 31, 2020                   13,459,708          
Balance, September 30, 2019 (in shares) at Dec. 31, 2019                   13,459,708          
Balance at Dec. 31, 2019                   $ 135,000 68,558,000 88,952,000 226,000 (67,972,000) 89,899,000
Net Income (Loss)                   (72,000) (72,000)
Unrealized gain (loss) on debt securities, net                   21,000 21,000
Amount reclassified from other comprehensive income                   5,000 5,000
Foreign currency translation, net                   166,000 166,000
Net income                   (72,000) (72,000)
Foreign currency translation, net of tax (expense) / benefit of ($43,000) and $17,000 during the three months ended March 31, 2020 and 2019, respectively, and ($31,000) and ($7,000) during the six months ended March 31, 2020 and 2019, respectively.                   166,000 166,000
Unrealized gain (loss) on debt securities, net                   21,000 21,000
Balance at Mar. 31, 2020                   $ 135,000 $ 68,558,000 $ 88,880,000 $ 418,000 $ (67,972,000) $ 90,019,000
Balance (in shares) at Mar. 31, 2020                   13,459,708