Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Expense (Details)

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Stock-Based Compensation Expense (Details)
$ in Thousands
 3 Months Ended 9 Months Ended 49 Months Ended
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
Jun. 30, 2014
plan
Apr. 08, 2011
shares
Jul. 28, 2010
shares
Stock-Based Compensation Expense              
Number of stock option award plans | plan         2    
Options outstanding (in shares) 200,107   200,107        
Stock compensation expense | $ $ 1,328 $ 1,041 $ 3,670 $ 3,130      
Restricted Stock and Stock Option Plan              
Stock-Based Compensation Expense              
Maximum number of shares of the company's common stock that may be awarded             2,767,171
2011 Long-term Incentive Plan              
Stock-Based Compensation Expense              
Maximum number of shares of the company's common stock that may be awarded           2,893,341  
Restricted Stock Units              
Stock-Based Compensation Expense              
Stock granted in the period (in shares)     119,509        
Stock issued during period | $     $ 2,641        
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period     3 years        
Common Stock              
Stock-Based Compensation Expense              
Stock granted in the period (in shares) 8,560   19,520        
Stock issued during period (in shares) 9,477   19,520        
Stock issued during period | $ $ 190   $ 470        
Share-based compensation arrangement by share-based payment award, fair value of shares authorized amount | $ $ 759   $ 759        
Performance Shares              
Stock-Based Compensation Expense              
Stock granted in the period (in shares)     30,075        
Stock issued during period | $     $ 915        
Minimum              
Stock-Based Compensation Expense              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Possible Number of Performance Shares to be Granted     0        
Maximum              
Stock-Based Compensation Expense              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Possible Number of Performance Shares to be Granted     60,150        
Management | Performance Shares              
Stock-Based Compensation Expense              
Stock granted in the period (in shares)     62,319        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period     3 years        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value | $     $ 1,370        
Management | Minimum              
Stock-Based Compensation Expense              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Possible Number of Performance Shares to be Granted     0        
Management | Maximum | Performance Shares              
Stock-Based Compensation Expense              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Possible Number of Performance Shares to be Granted     124,638