Provision for Income Tax (Schedule of Income Taxes) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Current income tax expense
Federal	$ 203,000	$ 272,000
State	76,000	141,000
Current income tax expense	279,000	413,000
Deferred income tax
Federal	47,000
State	43,000
Deferred income tax	90,000
Total provision for income tax	$ 369,000	$ 413,000