Acquisitions (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 26, 2015	Jan. 30, 2014 item	Dec. 31, 2014
Acquisitions
Delinquent loans or adversely classified assets	$ 4,663,000	$ 2,674,000			$ 1,444,000
LIABILITIES ASSUMED
Goodwill recognized	51,010,000	22,950,000			22,950,000
Total purchase credit impaired loans	5,978,000
Pro forma net interest and other income, net income and earnings per share
Net interest and other income	24,687,000	19,715,000
Net income	802,000	3,028,000
Basic earnings per share (in dollars per share)	$ 0.04	$ 0.14
Diluted earnings per share (in dollars per share)	$ 0.04	$ 0.14
Independence Bank
Acquisitions
Cash consideration for common stockholders			6,100,000
Cash consideration for holders of stock options and warrants			1,500,000
Number of shares of common stock issued as consideration			4,480,645
Value of shares of common stock issued as consideration			70,900,000
Closing stock price of common stock			$ 15.83
ASSETS ACQUIRED
Cash and cash equivalents			10,486,000
Investment securities			56,121,000
Loans, gross			332,893,000
Deferred income taxes			3,969,000
Bank owned life insurance			11,276,000
Core deposit intangible			2,903,000
Other assets			3,860,000
Total assets acquired			421,508,000
LIABILITIES ASSUMED
Deposits			336,018,000
FHLB advances			33,300,000
Other liabilities			1,796,000
Total liabilities assumed			371,114,000
Excess of assets acquired over liabilities assumed			50,394,000
Consideration paid			78,454,000
Goodwill recognized			28,060,000
Total purchase credit impaired loans	4,368,000
Independence Bank | Acquired Loans
Contractual amounts due, expected cash flows to be collected, interest component and fair value as of the respective acquisition dates
Contractual amounts due	453,987,000
Cash flows not expected to be collected	3,795,000
Expected cash flows	450,192,000
Interest component of expected cash flows	117,299,000
Fair value of acquired loans	332,893,000
Independence Bank | As initially reported
ASSETS ACQUIRED
Cash and cash equivalents			10,486,000
Investment securities			56,503,000
Loans, gross			339,502,000
Allowance for loan losses			(3,301,000)
Deferred income taxes			3,252,000
Bank owned life insurance			11,276,000
Core deposit intangible			904,000
Other assets			3,756,000
Total assets acquired			422,378,000
LIABILITIES ASSUMED
Deposits			335,685,000
FHLB advances			33,300,000
Other liabilities			1,916,000
Total liabilities assumed			370,901,000
Excess of assets acquired over liabilities assumed			51,477,000
Independence Bank | Fair Value Adjustments
ASSETS ACQUIRED
Investment securities			(382,000)
Loans, gross			(6,609,000)
Allowance for loan losses			3,301,000
Deferred income taxes			717,000
Core deposit intangible			1,999,000
Other assets			105,000
Total assets acquired			(869,000)
LIABILITIES ASSUMED
Deposits			333,000
Other liabilities			(120,000)
Total liabilities assumed			213,000
Excess of assets acquired over liabilities assumed			(1,082,000)
Infinity Franchise Holdings Acquisition
Acquisitions
Delinquent loans or adversely classified assets				0
Cash consideration				8,300,000
Number of shares of common stock issued as consideration				562,469
Stock price of the acquired entity (in dollars per share)				$ 16.02
Period prior to announcement of the transaction for which average closing price is considered to calculate value of shares to be issued				10 days
Number of entities in business combination				2
ASSETS ACQUIRED
Cash and cash equivalents				555,000
Loans, gross				78,833,000
Other assets				776,000
Total assets acquired				80,164,000
LIABILITIES ASSUMED
Bank loan				67,617,000
Accrued compensation				495,000
Other liabilities				214,000
Total liabilities assumed				68,326,000
Excess of assets acquired over liabilities assumed				11,838,000
Consideration paid				17,360,000
Goodwill recognized				5,522,000
Total purchase credit impaired loans				0
Infinity Franchise Holdings Acquisition | Acquired Loans
Contractual amounts due, expected cash flows to be collected, interest component and fair value as of the respective acquisition dates
Contractual amounts due	98,320,000
Expected cash flows	98,320,000
Interest component of expected cash flows	19,487,000
Fair value of acquired loans	78,833,000
Infinity Franchise Holdings Acquisition | As initially reported
ASSETS ACQUIRED
Cash and cash equivalents				555,000
Loans, gross				78,833,000
Deferred loan costs				1,082,000
Allowance for loan losses				(268,000)
Other assets				776,000
Total assets acquired				80,978,000
LIABILITIES ASSUMED
Bank loan				67,617,000
Accrued compensation				495,000
Other liabilities				214,000
Total liabilities assumed				68,326,000
Excess of assets acquired over liabilities assumed				12,652,000
Infinity Franchise Holdings Acquisition | Fair Value Adjustments
ASSETS ACQUIRED
Deferred loan costs				(1,082,000)
Allowance for loan losses				268,000
Total assets acquired				(814,000)
LIABILITIES ASSUMED
Excess of assets acquired over liabilities assumed				$ (814,000)
Maximum
LIABILITIES ASSUMED
Extension period for measurement of fair values	1 year