Regulatory Capital Requirements and Restrictions on Subsidiary Dividends (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Sep. 15, 2011
Total Capital (to Risk-Weighted Assets)
Actual - Amount	$ 532,502,000	$ 481,513,000
Actual - Ratio	15.35%	15.87%
For Capital Adequacy Purposes - Amount	277,485,000	242,715,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	463,371,000	427,145,000	312,500,000
Actual - Ratio	13.36%	14.08%
For Capital Adequacy Purposes - Amount	138,743,000	121,357,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	463,371,000	427,145,000
Actual - Ratio	9.84%	10.24%
For Capital Adequacy Purposes - Amount	188,284,000	166,865,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
Dubuque Bank and Trust Company
Total Capital (to Risk-Weighted Assets)
Actual - Amount	138,698,000	125,478,000
Actual - Ratio	12.44%	12.55%
For Capital Adequacy Purposes - Amount	89,164,000	79,962,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	111,455,000	99,953,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	129,473,000	116,103,000
Actual - Ratio	11.62%	11.62%
For Capital Adequacy Purposes - Amount	44,582,000	39,981,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	66,873,000	59,972,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	129,473,000	116,103,000
Actual - Ratio	8.73%	8.77%
For Capital Adequacy Purposes - Amount	59,341,000	52,961,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	74,176,000	66,201,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Galena State Bank & Trust Co.
Total Capital (to Risk-Weighted Assets)
Actual - Amount	28,027,000	26,354,000
Actual - Ratio	14.20%	13.34%
For Capital Adequacy Purposes - Amount	15,790,000	15,804,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	19,738,000	19,755,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	25,985,000	24,511,000
Actual - Ratio	13.17%	12.41%
For Capital Adequacy Purposes - Amount	7,895,000	7,902,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	11,843,000	11,853,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	25,985,000	24,511,000
Actual - Ratio	8.84%	8.41%
For Capital Adequacy Purposes - Amount	11,757,000	11,654,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	14,697,000	14,568,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Riverside Community Bank
Total Capital (to Risk-Weighted Assets)
Actual - Amount	30,097,000	27,636,000
Actual - Ratio	13.03%	13.83%
For Capital Adequacy Purposes - Amount	18,476,000	15,982,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	23,095,000	19,978,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	27,206,000	25,134,000
Actual - Ratio	11.78%	12.58%
For Capital Adequacy Purposes - Amount	9,238,000	7,991,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	13,857,000	11,987,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	27,206,000	25,134,000
Actual - Ratio	6.53%	7.78%
For Capital Adequacy Purposes - Amount	16,660,000	12,922,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	20,825,000	16,152,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Wisconsin Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	64,378,000	50,475,000
Actual - Ratio	13.84%	14.77%
For Capital Adequacy Purposes - Amount	37,213,000	27,348,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	46,516,000	34,185,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	60,183,000	46,989,000
Actual - Ratio	12.94%	13.75%
For Capital Adequacy Purposes - Amount	18,606,000	13,674,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	27,910,000	20,511,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	60,183,000	46,989,000
Actual - Ratio	10.59%	9.57%
For Capital Adequacy Purposes - Amount	22,741,000	19,634,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	28,426,000	24,542,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
New Mexico Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	90,765,000	85,006,000
Actual - Ratio	14.51%	13.45%
For Capital Adequacy Purposes - Amount	50,047,000	50,560,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	62,559,000	63,200,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	83,902,000	78,345,000
Actual - Ratio	13.41%	12.40%
For Capital Adequacy Purposes - Amount	25,023,000	25,280,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	37,535,000	37,920,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	83,902,000	78,345,000
Actual - Ratio	8.47%	8.47%
For Capital Adequacy Purposes - Amount	39,640,000	37,010,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	49,550,000	46,263,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Arizona Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	30,903,000	21,045,000
Actual - Ratio	14.13%	12.10%
For Capital Adequacy Purposes - Amount	17,499,000	13,913,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	21,874,000	17,392,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	28,116,000	18,814,000
Actual - Ratio	12.85%	10.82%
For Capital Adequacy Purposes - Amount	8,750,000	6,957,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	13,125,000	10,435,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	28,116,000	18,814,000
Actual - Ratio	9.93%	8.50%
For Capital Adequacy Purposes - Amount	11,327,000	8,849,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	14,158,000	11,062,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Rocky Mountain Bank
Total Capital (to Risk-Weighted Assets)
Actual - Amount	53,291,000	48,182,000
Actual - Ratio	16.46%	16.16%
For Capital Adequacy Purposes - Amount	25,902,000	23,859,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	32,377,000	29,823,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	49,243,000	44,452,000
Actual - Ratio	15.21%	14.91%
For Capital Adequacy Purposes - Amount	12,951,000	11,929,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	19,426,000	17,894,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	49,243,000	44,452,000
Actual - Ratio	11.41%	10.50%
For Capital Adequacy Purposes - Amount	17,268,000	16,938,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	21,585,000	21,173,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Summit Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	12,317,000	12,170,000
Actual - Ratio	13.26%	16.03%
For Capital Adequacy Purposes - Amount	7,432,000	6,075,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	9,290,000	7,594,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	11,155,000	11,220,000
Actual - Ratio	12.01%	14.78%
For Capital Adequacy Purposes - Amount	3,716,000	3,038,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	5,574,000	4,556,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	11,155,000	11,220,000
Actual - Ratio	10.48%	11.72%
For Capital Adequacy Purposes - Amount	4,256,000	3,830,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	5,320,000	4,787,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Minnesota Bank & Trust
Total Capital (to Risk-Weighted Assets)
Actual - Amount	14,446,000	13,878,000
Actual - Ratio	14.04%	20.63%
For Capital Adequacy Purposes - Amount	8,234,000	5,381,000
For Capital Adequacy Purposes - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	10,293,000	6,726,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	13,485,000	13,290,000
Actual - Ratio	13.10%	19.76%
For Capital Adequacy Purposes - Amount	4,117,000	2,690,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	6,176,000	4,036,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	13,485,000	13,290,000
Actual - Ratio	11.73%	16.53%
For Capital Adequacy Purposes - Amount	4,600,000	3,215,000
For Capital Adequacy Purposes - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	5,750,000	4,019,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%
Heritage Bank, N.A.
Total Capital (to Risk-Weighted Assets)
Actual - Amount	11,796,000
Actual - Ratio	20.13%
For Capital Adequacy Purposes - Amount	4,688,000
For Capital Adequacy Purposes - Ratio	8.00%
To Be Well Capitalized Under Prompt Corrective Action - Amount	5,860,000
To Be Well Capitalized Under Prompt Corrective Action - Ratio	10.00%
Tier 1 Capital (to Risk-Weighted Assets)
Actual - Amount	11,796,000
Actual - Ratio	20.13%
For Capital Adequacy Purposes - Amount	2,344,000
For Capital Adequacy Purposes - Ratio	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	3,516,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.00%
Tier 1 Capital (to Average Assets)
Actual - Amount	11,796,000
Actual - Ratio	11.59%
For Capital Adequacy Purposes - Amount	4,071,000
For Capital Adequacy Purposes - Ratio	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	5,089,000
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%
Minimum Capital Requirement
Tier 1 Capital (to Average Assets)
Retained earnings available for dividend payments	175,800,000
Capital Requirement to Remain Well Capitalized
Tier 1 Capital (to Average Assets)
Retained earnings available for dividend payments	$ 115,500,000