Note 2 - Summary of Significant Accounting Policies - Valuation Assumptions (Details)		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015
Minimum [Member]
Expected volatility(2)	[1]	46.38%	53.78%
Risk-free interest rate(3)	[2]	1.23%	1.49%
Expected life(4) (years)	[3]	5 years 182 days	5 years 182 days
Maximum [Member]
Expected volatility(2)	[1]	52.54%	56.00%
Risk-free interest rate(3)	[2]	1.82%	2.00%
Expected life(4) (years)	[3]	7 years	7 years
Dividend yield(1)	[4]	0.00%	0.00%
Assumed forfeiture rate		10.00%	19.00%

[1] Expected volatility is based on Bloombergs's five and one-half to seven year volatility calculation for "FRBK" stock.

[2] The risk-free interest rate is based on the five to seven year Treasury bond.

[3] The expected life reflects a 1 to 4 year vesting period, the maximum ten year term and review of historical behavior.

[4] A dividend yield of 0.0% is utilized because cash dividends have never been paid.