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Share-Based Compensation (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Jan. 02, 2018
Jan. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2018
Jun. 30, 2017
Options, outstanding (in shares)     15,000   15,000 30,881
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period         0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period         30,881  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         15,000  
Stock Repurchased During Period, Shares 41,566 41,566        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period         0  
Director [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period         7,500  
Restricted Stock [Member]            
Restricted shares outstanding (in shares)     60,000   60,000  
Restricted Stock [Member] | Director [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period         5,400  
Restricted Stock [Member] | Director [Member] | Standstill Agreement [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period         5,400  
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost         $ 37  
Performance Shares [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period       50,000 50,000  
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost     $ 1,745 $ 1,745    
Performance Shares [Member] | Director [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period         7,500  
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost       $ 43    
Service Based Restricted Shares [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period         117,900  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period         476,013