Items - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
Items - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Series A Preferred Stock
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 993	$ 993	$ 993	$ 993	$ 993
Shares, Outstanding, Beginning Balance	99,342	99,342	99,342	99,342	99,342
Net Income (Loss)	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Stock Issued During Period, Value, New Issues		0
Stockholders' Equity Attributable to Parent, Ending Balance	$ 993	$ 993	$ 993	$ 993	$ 993	$ 993
Shares, Outstanding, Ending Balance	99,342	99,342	99,342	99,342	99,342	99,342
Series B Preferred Stock
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 18	$ 0	$ 18	$ 0	$ 0
Shares, Outstanding, Beginning Balance	1,850	0	1,850	0	0
Net Income (Loss)	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Stock Issued During Period, Value, New Issues		$ 13
Stock Issued During Period, Shares, New Issues		1,350
Stockholders' Equity Attributable to Parent, Ending Balance	$ 18	$ 13	$ 18	$ 13	$ 18	$ 0
Shares, Outstanding, Ending Balance	1,850	1,350	1,850	1,350	1,850	0
Common Stock
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 8,269	$ 8,269	$ 8,269	$ 8,269	$ 8,269
Shares, Outstanding, Beginning Balance	826,921	826,921	826,921	826,921	826,921
Net Income (Loss)	$ 0	$ 0	$ 0	$ 0
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Stock Issued During Period, Value, New Issues		0
Stockholders' Equity Attributable to Parent, Ending Balance	$ 8,269	$ 8,269	$ 8,269	$ 8,269	$ 8,269	$ 8,269
Shares, Outstanding, Ending Balance	826,921	826,921	826,921	826,921	826,921	826,921
Additional Paid-in Capital
Stockholders' Equity Attributable to Parent, Beginning Balance	$ 15,677,626	$ 14,752,644	$ 15,677,626	$ 14,752,644	$ 14,752,644
Net Income (Loss)	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Stock Issued During Period, Value, New Issues		674,987
Stockholders' Equity Attributable to Parent, Ending Balance	15,677,626	15,427,631	15,677,626	15,427,631	15,677,626	$ 14,752,644
Retained Earnings
Stockholders' Equity Attributable to Parent, Beginning Balance	(12,348,988)	(12,038,281)	(12,348,988)	(12,038,281)	(12,038,281)
Net Income (Loss)	(198,026)	(202,621)	(152,046)	(115,297)
Other Comprehensive Income (Loss), Net of Tax	0	0	0	0
Stock Issued During Period, Value, New Issues		0
Stockholders' Equity Attributable to Parent, Ending Balance	(12,547,014)	(12,240,902)	(12,699,060)	(12,356,199)	(12,348,988)	(12,038,281)
AOCI Attributable to Parent
Stockholders' Equity Attributable to Parent, Beginning Balance	(57,396)	(63,710)	(57,396)	(63,710)	(63,710)
Net Income (Loss)	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax	(53,879)	9,767	(16,259)	25,198
Stock Issued During Period, Value, New Issues		0
Stockholders' Equity Attributable to Parent, Ending Balance	(111,275)	(53,943)	(127,534)	(28,745)	(57,396)	(63,710)
Stockholders' Equity Attributable to Parent, Beginning Balance	3,280,522	2,659,915	3,280,522	2,659,915	2,659,915
Net Income (Loss)	(198,026)	(202,621)	(152,046)	(115,297)	(319,000)	(25,000)
Other Comprehensive Income (Loss), Net of Tax	(53,879)	9,767	(16,259)	25,198
Stock Issued During Period, Value, New Issues		675,000	0	675,000
Stockholders' Equity Attributable to Parent, Ending Balance	$ 3,028,617	$ 3,142,061	$ 2,860,312	$ 3,051,962	$ 3,280,522	$ 2,659,915

UNITED BANCSHARES INC /PA 10-Q/A