Derivative Instruments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014		Dec. 31, 2013
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	$ 198,000
Interest Rate Derivative Assets, at Fair Value	4,474		6,604
Unrealized Gain in Accumulated Other Comprehensive Income	2,719		4,014
Not Designated as Hedging Instrument [Member]
Interest rate swap agreements [Abstract]
Notional Amount of Interest rate swap	561,612		588,972
Estimated Fair Value of Interest rate swap	(377)		(374)
Pay Fixed / Receive Variable Swaps [Member] | Not Designated as Hedging Instrument [Member]
Interest rate swap agreements [Abstract]
Notional Amount of Interest rate swap	280,806		294,486
Estimated Fair Value of Interest rate swap	13,099		13,296
Pay Variable / Receive Fixed Swaps [Member] | Not Designated as Hedging Instrument [Member]
Interest rate swap agreements [Abstract]
Notional Amount of Interest rate swap	280,806		294,486
Estimated Fair Value of Interest rate swap	(13,476)		(13,670)
Interest Rate Swap April 2015 April 2018 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	1.428%	[1]
Term, Lower Maturity Range Date	Apr. 02, 2015	[2]
Term, Higher Maturity Range Date	Apr. 02, 2018	[2]
Interest Rate Derivative Assets, at Fair Value	380		463
Unrealized Gain in Accumulated Other Comprehensive Income	231		281
Interest Rate Swap October 2015 April 2019 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	1.857%	[1]
Term, Lower Maturity Range Date	Oct. 02, 2015	[2]
Term, Higher Maturity Range Date	Apr. 02, 2019	[2]
Interest Rate Derivative Assets, at Fair Value	627		837
Unrealized Gain in Accumulated Other Comprehensive Income	381		509
Interest Rate Swap October 2015 October 2019 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	1.996%	[1]
Term, Lower Maturity Range Date	Oct. 02, 2015	[2]
Term, Higher Maturity Range Date	Oct. 02, 2019	[2]
Interest Rate Derivative Assets, at Fair Value	717		1,007
Unrealized Gain in Accumulated Other Comprehensive Income	436		612
Interest Rate Swap April 2016 April 2020 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	2.265%	[1]
Term, Lower Maturity Range Date	Apr. 04, 2016	[2]
Term, Higher Maturity Range Date	Apr. 02, 2020	[2]
Interest Rate Derivative Assets, at Fair Value	798		1,172
Unrealized Gain in Accumulated Other Comprehensive Income	485		712
Interest Rate Swap April 2016 April 2022 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	2.646%	[1]
Term, Lower Maturity Range Date	Apr. 04, 2016	[2]
Term, Higher Maturity Range Date	Apr. 04, 2022	[2]
Interest Rate Derivative Assets, at Fair Value	1,114		1,818
Unrealized Gain in Accumulated Other Comprehensive Income	677		1,105
Interest Rate Swap October 2016 October 2020 [Member] | Designated as Hedging Instrument [Member] | Subsequent Event [Member]
Forward Cash Flow Hedge Relationship [Abstract]
Forecasted Notional Amount	33,000
Variable Interest Rate	3 month LIBOR
Fixed Interest Rate	2.523%	[1]
Term, Lower Maturity Range Date	Oct. 03, 2016	[2]
Term, Higher Maturity Range Date	Oct. 02, 2020	[2]
Interest Rate Derivative Assets, at Fair Value	838		1,307
Unrealized Gain in Accumulated Other Comprehensive Income	$ 509		$ 795

[1] Pinnacle Financial will pay the fixed interest rate and the counterparties pay Pinnacle Financial the variable rate.

[2] No cash will be exchanged prior to the term.