Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v3.8.0.1
Income Taxes (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2018
Subsequent Event [Line Items]            
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent       34.00%    
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount       $ 14,300,000    
Deferred Tax Assets, Gross   $ 38,600,000   38,600,000    
Deferred Tax Assets, Valuation Allowance   38,600,000   38,600,000    
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax   697,000   697,000    
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability       697,000    
Income Taxes (Textual) [Abstract]            
Income tax benefit (expense)   $ 685,000 [1] $ (10,000) $ 660,000 [1] $ (20,000)  
Effective tax rate       1.76% (0.13%)  
Subsequent Event [Member]            
Subsequent Event [Line Items]            
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%          
Scenario, Forecast [Member]            
Subsequent Event [Line Items]            
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent           30.75%
[1] During the quarter ended December 31, 2017, the Company had income tax benefit from the release of the tax valuation allowance associated with previously generated alternative minimum tax (AMT) credits due to the enacted Tax Reform. See Note 8.