Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2016

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

Union's and the Company's regulatory capital amounts and ratios as of the balance sheet dates are presented in the following tables:

	Actual				For Capital Adequacy Purposes				To Be Well Capitalized Under Prompt Corrective Action Provisions
As of December 31, 2016	Amount		Ratio		Amount		Ratio		Amount		Ratio
Company:	(Dollars in thousands)
Total capital to risk weighted assets	$	62,128	13.32	%	$	37,314	8.00	%	N/A		N/A
Tier 1 capital to risk weighted assets	56,881		12.20	%	27,974		6.00	%	N/A		N/A
Common Equity Tier 1 to risk weighted assets	56,881		12.20	%	20,981		4.50	%	N/A		N/A
Tier 1 capital to average assets	56,881		8.40	%	27,086		4.00	%	N/A		N/A
Union:
Total capital to risk weighted assets	$	61,856	13.29	%	$	37,235	8.00	%	$	46,543	10.00	%
Tier 1 capital to risk weighted assets	56,609		12.16	%	27,932		6.00	%	37,243		8.00	%
Common Equity Tier 1 to risk weighted assets	56,609		12.16	%	20,949		4.50	%	30,260		6.50	%
Tier 1 capital to average assets	56,609		8.37	%	27,053		4.00	%	33,817		5.00	%

	Actual				For Capital Adequacy Purposes				To be Well Capitalized Under Prompt Corrective Action Provisions
As of December 31, 2015	Amount		Ratio		Amount		Ratio		Amount		Ratio
Company:	(Dollars in thousands)
Total capital to risk weighted assets	$	58,478	13.42	%	$	34,860	8.00	%	N/A		N/A
Tier 1 capital to risk weighted assets	53,277		12.22	%	26,159		6.00	%	N/A		N/A
Common Equity Tier 1 to risk weighted assets	53,277		12.22	%	19,619		4.50	%	N/A		N/A
Tier 1 capital to average assets	53,277		8.54	%	24,954		4.00	%	N/A		N/A
Union:
Total capital to risk weighted assets	$	58,094	13.37	%	$	34,761	8.00	%	$	43,451	10.00	%
Tier 1 capital to risk weighted assets	52,893		12.17	%	26,077		6.00	%	34,769		8.00	%
Common Equity Tier 1 to risk weighted assets	52,893		12.17	%	19,558		4.50	%	28,250		6.50	%
Tier 1 capital to average assets	52,893		8.50	%	24,891		4.00	%	31,114		5.00	%