Shareholders' Equity And Earnings Per Share (Narrative) (Detail) (USD $)
|
0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 3 Months Ended | 0 Months Ended | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | |||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 19, 2008
|
Apr. 30, 2014
|
Feb. 28, 2014
|
Jan. 31, 2014
|
Feb. 28, 2013
|
Mar. 31, 2012
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Dec. 31, 2010
|
Dec. 31, 2013
|
Jul. 19, 2013
|
Dec. 07, 2010
|
Jul. 19, 2013
Series A Preferred Stock [Member]
|
Aug. 31, 2008
Series A Preferred Stock [Member]
|
Jun. 30, 2014
Series A Preferred Stock [Member]
|
Dec. 31, 2013
Series A Preferred Stock [Member]
|
Jun. 30, 2013
Series A Preferred Stock [Member]
|
Mar. 31, 2012
Series C Preferred Stock [Member]
|
Aug. 31, 2008
Series C Preferred Stock [Member]
|
Mar. 31, 2014
Series C Preferred Stock [Member]
|
Dec. 31, 2013
Series C Preferred Stock [Member]
|
Jun. 30, 2014
Series C Preferred Stock [Member]
|
Jun. 30, 2013
Series C Preferred Stock [Member]
|
Dec. 15, 2013
Equity Component
|
Jun. 30, 2014
Equity Component
|
Dec. 31, 2010
Equity Component
|
Jun. 30, 2014
Junior Subordinated Amortizing Notes [Member]
|
Dec. 31, 2013
Junior Subordinated Amortizing Notes [Member]
|
Dec. 31, 2010
Junior Subordinated Amortizing Notes [Member]
|
Dec. 15, 2013
Junior Subordinated Amortizing Notes [Member]
|
Mar. 15, 2011
Junior Subordinated Amortizing Notes [Member]
Debt [Member]
|
Dec. 31, 2010
Junior Subordinated Amortizing Notes [Member]
Debt [Member]
|
Dec. 07, 2010
Junior Subordinated Amortizing Notes [Member]
Debt [Member]
|
May 01, 2013
First Lansing Bancorp, Inc. [Member]
|
Dec. 31, 2010
Minimum [Member]
Equity Component
|
Dec. 31, 2010
Maximum [Member]
Equity Component
|
Jun. 30, 2014
US Treasury [Member]
|
Jun. 30, 2014
Other Warrants [Member]
|
|
Temporary Equity [Line Items] | ||||||||||||||||||||||||||||||||||||||||
Amount Of Tangible Equity Units Sold | 4,600,000 | |||||||||||||||||||||||||||||||||||||||
Rate on tangible equity units | 7.50% | |||||||||||||||||||||||||||||||||||||||
Tangible equity unit public offering price per unit | $ 50.00 | |||||||||||||||||||||||||||||||||||||||
Net proceeds on sale of tangible equity units | $ 222,700,000 | |||||||||||||||||||||||||||||||||||||||
Maturity Date | Dec. 15, 2013 | Dec. 15, 2013 | Dec. 15, 2013 | Dec. 15, 2013 | ||||||||||||||||||||||||||||||||||||
Debt Instrument, Frequency of Periodic Payment | quarterly | quarterly | ||||||||||||||||||||||||||||||||||||||
Percentage of fair value of debt component quarterly cash payments | 7.50% | |||||||||||||||||||||||||||||||||||||||
Discount rate on debt component | 9.50% | |||||||||||||||||||||||||||||||||||||||
Risk-free rate | 0.95% | |||||||||||||||||||||||||||||||||||||||
Expected stock price volatility minimum | 35.00% | 45.00% | ||||||||||||||||||||||||||||||||||||||
Percent of dividend yield plus stock borrow cost | 0.85% | |||||||||||||||||||||||||||||||||||||||
Equity term, years | 3 years 7 days | |||||||||||||||||||||||||||||||||||||||
Junior subordinated amortizing note, initial principal amount | 9.728182 | |||||||||||||||||||||||||||||||||||||||
Contractual rate | 9.50% | 9.50% | ||||||||||||||||||||||||||||||||||||||
Quarterly installments on amortizing note | 0.989583 | 0.9375 | ||||||||||||||||||||||||||||||||||||||
Settlement rate, shares | 1.3333 | |||||||||||||||||||||||||||||||||||||||
Number Of Consecutive Trading Days | 20 | |||||||||||||||||||||||||||||||||||||||
Amount Per Share Reclassified From Surplus To Common Stock | $ 1.00 | |||||||||||||||||||||||||||||||||||||||
Preferred stock, shares issued | 50,000 | 0 | 0 | 50,000 | 126,500 | 126,477 | 126,467 | 126,500 | ||||||||||||||||||||||||||||||||
Preferred stock, liquidation value per share | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | $ 1,000 | ||||||||||||||||||||||||||||||||
Preferred stock, value | $ 50,000,000 | $ 0 | $ 0 | $ 49,976,000 | $ 126,500,000 | $ 126,477,000 | $ 126,467,000 | $ 126,500,000 | ||||||||||||||||||||||||||||||||
Preferred Stock, Dividend Payment Terms | quarterly | quarterly | ||||||||||||||||||||||||||||||||||||||
Preferred stock, dividend rate, percentage | 8.00% | 5.00% | ||||||||||||||||||||||||||||||||||||||
Convertible Preferred Stock, Terms of Conversion | 38.88 | 24.3132 | ||||||||||||||||||||||||||||||||||||||
Preferred Stock, Shares Converted | 50,000 | 10 | 23 | |||||||||||||||||||||||||||||||||||||
Stock Issued During Period, Shares, Conversion of Convertible Securities | 1,944,000 | 244 | 558 | |||||||||||||||||||||||||||||||||||||
Common stock, no par value | $ 0 | |||||||||||||||||||||||||||||||||||||||
Warrants outstanding | 1,643,295 | 19,000 | 1,143,366 | 0 | ||||||||||||||||||||||||||||||||||||
Investment Warrants, Exercise Price | $ 22.82 | |||||||||||||||||||||||||||||||||||||||
Warrant Termination Period | 10 years | |||||||||||||||||||||||||||||||||||||||
Warrants Exercised | 1,000 | 18,000 | 499,929 | |||||||||||||||||||||||||||||||||||||
Common Stock, Shares, Issued from Exercise of Warrant Shares | 259,071 | |||||||||||||||||||||||||||||||||||||||
Warrants Holders Common Stock Purchase Price Per Share | $ 30.50 | |||||||||||||||||||||||||||||||||||||||
Common stock, shares issued | 648,286 | |||||||||||||||||||||||||||||||||||||||
Cash dividends declared per common share | $ 0.10 | $ 0.10 | $ 0.10 | $ 0.00 | $ 0.20 | $ 0.09 | ||||||||||||||||||||||||||||||||||
Common Stock Dividends Per Share Declared Annualized | $ 0.40 | $ 0.40 | ||||||||||||||||||||||||||||||||||||||
Dividends Payable, Date to be Paid | May 22, 2014 | Feb. 20, 2014 | ||||||||||||||||||||||||||||||||||||||
Dividends Payable, Date of Record | May 08, 2014 | Feb. 06, 2014 |