Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed statement of income of discontinued operations
Interest income	$ 3,058,000	$ 3,285,000	$ 6,173,000	$ 6,699,000
Interest expense	533,000	780,000	1,161,000	1,628,000
Net interest income	2,525,000	2,505,000	5,012,000	5,071,000
Provision for loan losses	80,000	730,000	943,000	1,525,000
Net interest income (loss) after provision for loan losses	2,445,000	1,775,000	4,069,000	3,546,000
Non-interest income	1,306,000	1,189,000	2,642,000	2,512,000
Non-interest expense	3,607,000	3,397,000	7,430,000	6,835,000
Income (loss) before federal income tax	0	(437,000)	0	5,000
Federal income tax (benefit) expense	0	(156,000)	(124,000)	(368,000)
Gain on sale of subsidiary	0	469,000	0	469,000
Income from discontinued operations	0	32,000	0	474,000
Discontinued Operations [Member]
Condensed statement of income of discontinued operations
Interest income		2,000		454,000
Interest expense		0		129,000
Net interest income		2,000		325,000
Provision for loan losses		0		(50,000)
Net interest income (loss) after provision for loan losses		2,000		375,000
Non-interest income		99,000		256,000
Non-interest expense		126,000		646,000
Income (loss) before federal income tax		(25,000)		(15,000)
Federal income tax (benefit) expense		(57,000)		(20,000)
Gain on sale of subsidiary		0		469,000
Income from discontinued operations		32,000		474,000
West Michigan Community Bank [Member]
Condensed statement of income of discontinued operations
Income from discontinued operations			469,000
West Michigan Community Bank [Member] | Discontinued Operations [Member]
Condensed statement of income of discontinued operations
Interest income				515,000
Interest expense				129,000
Net interest income				386,000
Provision for loan losses				(50,000)
Net interest income (loss) after provision for loan losses				436,000
Non-interest income				121,000
Non-interest expense				415,000
Income (loss) before federal income tax				142,000
Federal income tax (benefit) expense				37,000
Gain on sale of subsidiary				469,000
Income from discontinued operations				574,000
Assumed Loans and Other Real Estate [Member] | Discontinued Operations [Member]
Condensed statement of income of discontinued operations
Interest income		2,000		(61,000)
Interest expense		0		0
Net interest income		2,000		(61,000)
Provision for loan losses		0		0
Net interest income (loss) after provision for loan losses		2,000		(61,000)
Non-interest income		99,000		135,000
Non-interest expense		126,000		231,000
Income (loss) before federal income tax		(25,000)		(157,000)
Federal income tax (benefit) expense		(57,000)		(57,000)
Gain on sale of subsidiary		0		0
Income from discontinued operations		$ 32,000		$ (100,000)