Note 25 - Parent Company Only Financial Information (Details) - Condensed Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Net income	$ 24,306,000	$ 729,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred tax benefit	1,286,000	(14,000)
Deferred tax valuation allowance	(21,856,000)	25,000
Depreciation	2,171,000	1,358,000
Stock compensation expense	468,000	243,000
Changes in operating assets and liabilities:
Net cash provided by (used in) operating activities	5,526,000	586,000
INVESTING ACTIVITIES:
Purchases of office properties and equipment	(3,820,000)	(1,750,000)
Merger consideration paid	(8,985,000)
Net cash used in investing activities	3,847,000	(38,514,000)
FINANCING ACTIVITIES:
Proceeds from other borrowings	18,163,000
Proceeds from private placement	20,000,000
Proceeds from exercise of warrants	3,590,000	1,785,000
Proceeds from exercise of stock options	24,000
Repurchase of common stock	(5,000)
Payment for fractional shares, stock dividend	(7,000)
Net cash provided by financing activities	79,743,000	19,291,000
NET DECREASE IN CASH AND CASH EQUIVALENTS	89,116,000	(18,637,000)
CASH AND CASH EQUIVALENTS:
Beginning of period	23,970,000	42,607,000
End of period	113,086,000	23,970,000
Parent Company [Member]
OPERATING ACTIVITIES:
Net income	24,306,000	729,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Equity in undistributed net income of Bank	(1,630,000)	(1,391,000)
Deferred tax benefit	(1,414,000)
Deferred tax valuation allowance	(913,000)
Depreciation	71,000
Stock compensation expense	126,000	243,000
Changes in operating assets and liabilities:
Other assets	(2,872,000)	(242,000)
Accrued expenses and other liabilities	2,005,000	3,000
Net cash provided by (used in) operating activities	19,679,000	(658,000)
INVESTING ACTIVITIES:
Purchases of office properties and equipment	(942,000)
Merger consideration paid	(50,000,000)
Investment in Bank	(11,001,000)	(2,028,000)
Net cash used in investing activities	(61,943,000)	(2,028,000)
FINANCING ACTIVITIES:
Proceeds from other borrowings	18,163,000
Proceeds from private placement	20,000,000
Proceeds from exercise of warrants	3,590,000	1,785,000
Proceeds from exercise of stock options	24,000
Repurchase of common stock	(5,000)
Payment for fractional shares, stock dividend	(7,000)
Net cash provided by financing activities	41,765,000	1,785,000
NET DECREASE IN CASH AND CASH EQUIVALENTS	(499,000)	(901,000)
CASH AND CASH EQUIVALENTS:
Beginning of period	593,000	1,494,000
End of period	$ 94,000	$ 593,000