Note 3 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses by Portfolio Segment (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	$ 22,520		$ 20,105		$ 22,347		$ 20,029
Charge-Offs	1,878		2,113	[1]	4,273		5,419	[1]
Recoveries	452		393		1,020		775
Net Charge-Offs	1,426		1,720	[1]	3,253		4,644	[1]
Provision for Loan Losses	1,500		2,750		3,500		5,750
Balance, End of Period	22,594		21,135		22,594		21,135
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	8,384		7,515		8,662		7,647
Charge-Offs	1,259		140		2,581		2,009
Recoveries	27		117		277		151
Net Charge-Offs	1,232		23		2,304		1,858
Provision for Loan Losses	1,212		152		2,006		1,855
Balance, End of Period	8,364		7,644		8,364		7,644
Loans To Non Depository Institutions [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	1,765		1,265		1,726		1,369
Charge-Offs	0		0		0		0
Recoveries	0		0		0		0
Net Charge-Offs	0		0		0		0
Provision for Loan Losses	(93)		362		(54)		258
Balance, End of Period	1,672		1,627		1,672		1,627
Factored Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	1,992		1,498		1,447		1,450
Charge-Offs	190		223		413		340
Recoveries	46		45		49		51
Net Charge-Offs	144		178		364		289
Provision for Loan Losses	(174)		189		591		348
Balance, End of Period	1,674		1,509		1,674		1,509
Equipment Financing Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	3,254		3,448		3,763		3,515
Charge-Offs	372		731		838		1,833
Recoveries	369		223		682		561
Net Charge-Offs	3		508		156		1,272
Provision for Loan Losses	375		593		19		1,290
Balance, End of Period	3,626		3,533		3,626		3,533
Real Estate Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	3,991		3,746		3,764		3,490
Charge-Offs	28	[1]	348	[1]	389	[1]	479	[1]
Recoveries	4		1		6		2
Net Charge-Offs	24	[1]	347	[1]	383	[1]	477	[1]
Provision for Loan Losses	130		557		716		943
Balance, End of Period	4,097		3,956		4,097		3,956
Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	2,459		2,228		2,504		2,151
Charge-Offs	0		671		0		671
Recoveries	0		0		0		0
Net Charge-Offs	0		671		0		671
Provision for Loan Losses	68		825		23		902
Balance, End of Period	2,527		2,382		2,527		2,382
Commercial Real Estate Construction and Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	182		139		156		165
Charge-Offs	0		0		0		0
Recoveries	0		0		0		0
Net Charge-Offs	0		0		0		0
Provision for Loan Losses	(5)		11		21		(15)
Balance, End of Period	177		150		177		150
Loans To Individual [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	353		125		163		104
Charge-Offs	30		0		53		87
Recoveries	7		7		7		10
Net Charge-Offs	23		(7)		46		77
Provision for Loan Losses	(66)		9		147		114
Balance, End of Period	264		141		264		141
Loans To Depository Institutions [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	0		0		0		0
Charge-Offs	0		0		0		0
Recoveries	0		0		0		0
Net Charge-Offs	0		0		0		0
Provision for Loan Losses	0		0		0		0
Balance, End of Period	0		0		0		0
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, Beginning of Period	140		141		162		138
Charge-Offs	0		0		0		0
Recoveries	0		0		0		0
Net Charge-Offs	0		0		0		0
Provision for Loan Losses	53		52		31		55
Balance, End of Period	$ 193		$ 193		$ 193		$ 193

[1] Includes losses on transfers to OREO