Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Expense (Details)

v3.10.0.1
Stock-Based Compensation Expense (Details)
$ in Thousands
 3 Months Ended 49 Months Ended
Jun. 30, 2018
USD ($)
shares
Jun. 30, 2017
USD ($)
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) 354,643        
Stock compensation expense | $ $ 1,004 $ 785      
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          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 89,114        
Stock Issued During Period, Value, Restricted Stock Award, Gross | $ $ 2,098        
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period 3 years        
Common Stock          
Stock-Based Compensation Expense          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 5,212        
Stock Issued During Period, Value, Restricted Stock Award, Gross | $ $ 115        
Share-based compensation arrangement by share-based payment award, fair value of shares authorized amount | $ $ 480        
Performance Shares          
Stock-Based Compensation Expense          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 11,533        
Stock Issued During Period, Value, Restricted Stock Award, Gross | $ $ 320        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value | $ $ 0        
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 23,066        
Management | Performance Shares          
Stock-Based Compensation Expense          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 46,032        
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 | $ $ 1,084        
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          
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 15,920        
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 92,064        
Executive Officer | Performance Shares          
Stock-Based Compensation Expense          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 10,613