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1. Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule of other income

The following table presents the primary components of Other Income:

 

    Year Ended December 31,  
    2017     2016     2015  
    (In thousands)  
Direct mail revenues   $ 6,432     $ 9,202     $ 8,927  
Convenience fee revenue     1,900       2,145       2,610  
Recoveries on previously charged-off contracts     563       766       1,079  
Sales tax refunds     866       811       616  
Other     448       362       506  
    $ 10,209     $ 13,286     $ 13,738  
Schedule of computation of earnings per share

The following table illustrates the computation of basic and diluted earnings per share:

 

    Year Ended December 31,  
    2017     2016     2015  
    (In thousands, except per share data)  
Numerator:                        
Numerator for basic and diluted earnings per share   $ 3,765     $ 29,300     $ 34,681  
Denominator:                        
Denominator for basic earnings per share - weighted average number of common shares outstanding during the year     22,687       24,356       25,935  
Incremental common shares attributable to exercise of outstanding options and warrants     4,527       4,679       5,649  
Denominator for diluted earnings per share     27,214       29,035       31,584  
Basic earnings per share   $ 0.17     $ 1.20     $ 1.34  
Diluted earnings per share   $ 0.14     $ 1.01     $ 1.10