Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Narrative) (Details)

v3.10.0.1
Fair Value Measurements (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2018
Fair Value Measurements [Abstract]    
Goodwill impairment loss $ 1,463,000 $ 1,463,000
Transfers between levels   $ 0