Regulatory Capital Requirements (Details) (USD $)	0 Months Ended
	Dec. 15, 2004	Dec. 31, 2013	Dec. 31, 2012
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital, Actual Amount		$ 142,036,000	$ 136,004,000
Tier One Leverage Capital, Actual Percent		8.44%	8.08%
Tier One Leverage Capital For Capital Adequacy Purposes, Amount		67,344,000	67,307,000
Tier One Leverage Capital For Capital Adequacy Purposes, Percent		4.00%	4.00%
Tier One Risk Based Capital, Actual Amount		142,036,000	136,004,000
Tier One Risk Based Capital, Actual Percent		14.87%	14.75%
Tier One Risk Based Capital For Capital Adequacy Purposes, Amount		38,216,000	36,887,000
Tier One Risk Based Capital For Capital Adequacy Purposes, Percent		4.00%	4.00%
Total Risk-Based Capital, Actual Amount		153,999,000	147,505,000
Total Risk-Based Capital, Actual Percent		16.12%	16.00%
Total Risk Based Capital For Capital Adequacy Purposes, Amount		76,433,000	73,753,000
Total Risk Based Capital For Capital Adequacy Purposes, Percent		8.00%	8.00%
Private placement, trust preferred securities, aggregate amount	20,000,000
Merchants Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital, Actual Amount		139,144,000	131,850,000
Tier One Leverage Capital, Actual Percent		8.24%	7.81%
Tier One Leverage Capital For Capital Adequacy Purposes, Amount		67,530,000	67,494,000
Tier One Leverage Capital For Capital Adequacy Purposes, Percent		4.00%	4.00%
Tier One Leverage Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		84,413,000	84,367,000
Tier One Leverage Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Percent		5.00%	5.00%
Tier One Risk Based Capital, Actual Amount		139,144,000	131,850,000
Tier One Risk Based Capital, Actual Percent		14.47%	14.21%
Tier One Risk Based Capital For Capital Adequacy Purposes, Amount		38,470,000	37,123,000
Tier One Risk Based Capital For Capital Adequacy Purposes, Percent		4.00%	4.00%
Tier One Risk Based Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount		57,705,000	55,684,000
Tier One Risk Based Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Percent		6.00%	6.00%
Total Risk-Based Capital, Actual Amount		151,176,000	143,422,000
Total Risk-Based Capital, Actual Percent		15.72%	15.45%
Total Risk Based Capital For Capital Adequacy Purposes, Amount		76,940,000	74,245,000
Total Risk Based Capital For Capital Adequacy Purposes, Percent		8.00%	8.00%
Total Risk Based Capital To Be Well-Capitalized Under Prompt Corrective Action Provisions, Amount		$ 96,175,000	$ 92,806,000
Total Risk Based Capital To Be Well-Capitalized Under Prompt Corrective Action Provisions, Percent		10.00%	10.00%