Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Purchased Intangibles (Narrative) (Details)

v3.10.0.1
Goodwill and Purchased Intangibles (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]            
Goodwill $ 803,118   $ 803,118   $ 803,118 $ 803,118
Amortization expense $ 11,096 $ 12,177 $ 21,765 $ 21,500    
Maximum [Member]            
Finite-Lived Intangible Assets [Line Items]            
Estimated useful lives     20 years      
Minimum [Member]            
Finite-Lived Intangible Assets [Line Items]            
Estimated useful lives     1 year