Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2018

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, 2018	Amount		Ratio		Amount		Ratio		Amount		Ratio
Company:	(Dollars in thousands)
Total capital to risk weighted assets	$	68,616	12.86	%	$	42,685	8.00	%	N/A		N/A
Tier 1 capital to risk weighted assets	62,877		11.78	%	32,026		6.00	%	N/A		N/A
Common Equity Tier 1 to risk weighted assets	62,877		11.78	%	24,019		4.50	%	N/A		N/A
Tier 1 capital to average assets	62,877		8.03	%	31,321		4.00	%	N/A		N/A
Union:
Total capital to risk weighted assets	$	68,305	12.82	%	$	42,624	8.00	%	$	53,280	10.00	%
Tier 1 capital to risk weighted assets	62,566		11.75	%	31,949		6.00	%	42,598		8.00	%
Common Equity Tier 1 to risk weighted assets	62,566		11.75	%	23,961		4.50	%	34,611		6.50	%
Tier 1 capital to average assets	62,566		8.00	%	31,283		4.00	%	39,104		5.00	%

	Actual				For Capital Adequacy Purposes				To be Well Capitalized Under Prompt Corrective Action Provisions
As of December 31, 2017	Amount		Ratio		Amount		Ratio		Amount		Ratio
Company:	(Dollars in thousands)
Total capital to risk weighted assets	$	66,472	13.66	%	$	38,929	8.00	%	N/A		N/A
Tier 1 capital to risk weighted assets	61,064		12.55	%	29,194		6.00	%	N/A		N/A
Common Equity Tier 1 to risk weighted assets	61,064		12.55	%	21,895		4.50	%	N/A		N/A
Tier 1 capital to average assets	61,064		8.46	%	28,872		4.00	%	N/A		N/A
Union:
Total capital to risk weighted assets	$	66,212	13.64	%	$	38,834	8.00	%	$	48,543	10.00	%
Tier 1 capital to risk weighted assets	60,804		12.52	%	29,139		6.00	%	38,852		8.00	%
Common Equity Tier 1 to risk weighted assets	60,804		12.52	%	21,854		4.50	%	31,568		6.50	%
Tier 1 capital to average assets	60,804		8.43	%	28,851		4.00	%	36,064		5.00	%