Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Interest Rate Swaps

A summary of Pinnacle Financial's interest rate swaps to facilitate customers' transactions as of March 31, 2019 and December 31, 2018 is included in the following table (in thousands):

		March 31, 2019					December 31, 2018
	Balance Sheet Location	Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Interest rate swap agreements:
Assets	Other assets	$	1,096,649	$	24,555		$	1,059,724	$	22,273
Liabilities	Other liabilities	1,096,649		(24,696		)	1,059,724		(22,401		)
Total		$	2,193,298	$	(141	)	$	2,119,448	$	(128	)

The effects of Pinnacle Financial's interest rate swaps to facilitate customers' transactions on the income statement during the three months ended March 31,2019 and 2018 were as follows:

		Amount of Gain (Loss) Recognized in Income
	Location of Gain (Loss) Recognized in Income	Three Months Ended March 31,
		2019			2018
Interest rate swap agreements	Other noninterest income	$	(13	)	$	(20	)

Schedule of Derivative Instruments

Derivatives designated as cash flow hedges

For derivative instruments that are designated and qualify as a cash flow hedge, the aggregate fair value of the derivative instrument is recorded in other assets or other liabilities with any gain or loss related to changes in fair value recorded in accumulated other comprehensive income, net of tax. The gain or loss is reclassified into earnings in the same period during which the hedged asset or liability affects earnings and is presented in the same income statement line item as the earnings effect of the hedged asset or liability. Pinnacle Financial uses forward cash flow hedge relationships in an effort to manage future interest rate exposure. The hedging strategy converts the LIBOR-based variable interest rate on forecasted borrowings to a fixed interest rate and is used in an effort to protect Pinnacle Financial from floating interest rate variability. A summary of Pinnacle Financial's cash flow hedge relationships as of March 31, 2019 and December 31, 2018 are as follows (in thousands):

					March 31, 2019					December 31, 2018
	Balance Sheet Location	Weighted Average Remaining Maturity (In Years)	Weighted Average Pay Rate	Receive Rate	Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Liability derivatives
Interest rate swap agreements	Other liabilities	3.10	3.09%	3 month LIBOR	$	99,000	$	(2,466	)	$	99,000	$	(1,757	)

The effects of Pinnacle Financial's cash flow hedge relationships on the statement of comprehensive income (loss) during the three months ended March 31,2019 and 2018 were as follows:

	Amount of Gain Recognized in Other Comprehensive Income (Loss)
	Three Months Ended March 31,
Liability derivatives	2019			2018
Interest rate swap agreements	$	(523	)	$	1,720

The cash flow hedges were determined to be highly effective during the periods presented and as a result qualify for hedge accounting treatment. The hedge would no longer be considered effective if a portion of the hedge becomes ineffective, the item hedged is no longer in existence or Pinnacle Financial discontinues hedge accounting. Pinnacle Financial expects the hedges to continue to be highly effective and qualify for hedge accounting during the remaining terms of the swaps. Gains totaling $256,000 and $141,000 were reclassified from accumulated other comprehensive income into net income during the three months ended March 31,2019 or 2018, respectively, related to previously terminated derivatives. No amounts are expected to be reclassified from accumulated other comprehensive income into net income over the next twelve months related to derivatives that are currently on the balance sheet.

Derivatives designated as fair value hedges

For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged asset or liability attributable to the hedged risk are recognized in current earnings. The gain or loss on the derivative instrument is presented on the same income statement line item as the earnings effect of the hedged item. Pinnacle Financial utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of fixed rate callable securities available-for-sale and fixed rate prepayable loans. The hedging strategy on securities converts the fixed interest rates to LIBOR-based variable interest rates. These derivatives are designated as partial term hedges of selected cash flows covering specified periods of time prior to the call dates of the hedged securities. Pinnacle Financial also utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of the loans. A specified portion of the prepayable loans have been designated as the hedged assets under the "last-of-layer" method. Such hedging designations are allowed on the portion of a closed portfolio of prepayable assets that is not expected to be affected by prepayments, defaults, and other factors affecting the timing and amount of cash flows.

A summary of Pinnacle Financial's fair value hedge relationships as of March 31, 2019 and December 31, 2018 are as follows (in thousands):

					March 31, 2019					December 31, 2018
	Balance Sheet Location	Weighted Average Remaining Maturity (In Years)	Weighted Average Pay Rate	Receive Rate	Notional Amount		Estimated Fair Value			Notional Amount		Estimated Fair Value
Liability derivatives
Interest rate swap agreements - securities	Other liabilities	7.80	3.08%	3 month LIBOR	$	477,905	$	(25,076	)	$	477,905	$	(14,796	)
Interest rate swap agreements - loans	Other liabilities	2.39	2.77%	3 month LIBOR	900,000		(11,891		)	900,000		(7,037		)
		4.26	2.88%		$	1,377,905	$	(36,967	)	$	1,377,905	$	(21,833	)

The effects of Pinnacle Financial's fair value hedge relationships on the income statement during the three months ended March 31, 2019 and 2018 were as follows:

	Location of Gain (Loss) on Derivative	Amount of Gain (Loss) Recognized in Income
		Three Months Ended March 31,
Liability derivatives		2019			2018
Interest rate swap agreements - securities	Interest income on securities	$	(10,280	)	$	1,579
Interest rate swap agreements - loans	Interest income on loans	$	(4,854	)	$	—

	Location of Gain (Loss) on Hedged Item	Amount of Gain (Loss) Recognized in Income
		Three Months Ended March 31,
Liability derivatives		2019		2018
Interest rate swap agreements - securities	Interest income on securities	$	10,280	$	(1,579	)
Interest rate swap agreements - loans	Interest income on loans	$	4,854	$	—

The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at March 31, 2019 and December 31, 2018:

	Carrying Amount of the Hedged Assets				Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets
	March 31, 2019		December 31, 2018		March 31, 2019		December 31, 2018
Line item on the balance sheet
Securities available-for-sale	$	528,900	$	513,116	$	25,076	$	14,796
Loans (1)	$	911,891	$	907,037	$	11,891	$	7,037

(1) The carrying amount as shown represents the designated last-of-layer. At March 31, 2019 and December 31, 2018, the total amortized cost basis of the closed portfolio of loans designated in these hedging relationships was $2.7 billion.