Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of carrying amount and estimated fair value of financial instruments

The fair value estimates presented herein are based on pertinent information available to management as of the periods indicated.

	At September 30, 2017
	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
	(dollars in thousands)
Assets:
Cash and cash equivalents	$	121,362	$	121,362	$	—	$	—	$	121,362
Interest-bearing time deposits with financial institutions	4,437		4,437		—		—		4,437
Investments held-to-maturity	18,627		—		18,577		—		18,577
Securities available-for-sale	703,944		—		703,944		—		703,944
Federal Reserve Bank and FHLB stock, at cost	58,344		N/A		N/A		N/A		N/A
Loans held for sale, net	44,343		—		46,817		—		46,817
Loans held for investment, net	5,009,317		—		—		5,000,756		5,000,756
Accrued interest receivable	20,527		20,527		—		—		20,527
Liabilities:
Deposit accounts	5,018,153		3,821,275		807,647		—		4,628,922
FHLB advances	335,186		—		335,661		—		335,661
Other borrowings	46,987		—		47,371		—		47,371
Subordinated debentures	79,871		—		81,870		—		81,870
Accrued interest payable	985		985		—		—		985

	At December 31, 2016
	Carrying Amount		Level 1		Level 2		Level 3		Estimated Fair Value
	(dollars in thousands)
Assets:
Cash and cash equivalents	$	156,857	$	156,857	$	—	$	—	$	156,857
Interest-bearing time deposits with financial institutions	3,944		3,944		—		—		3,944
Investments held-to-maturity	8,565		—		8,461				8,461
Securities available-for-sale	380,963		—		380,963		—		380,963
Federal Reserve Bank and FHLB stock, at cost	37,304		N/A		N/A		N/A		N/A
Loans held for sale, net	7,711		—		8,405		—		8,405
Loans held for investment, net	3,220,317		—		—		3,211,154		3,211,154
Accrued interest receivable	13,145		13,145		—		—		13,145
Liabilities:
Deposit accounts	3,145,581		2,330,579		573,467		—		2,904,046
FHLB advances	278,000		—		277,935		—		277,935
Other borrowings	49,971		—		50,905		—		50,905
Subordinated debentures	69,383		—		69,982		—		69,982
Accrued interest payable	263		263		—		—		263

Schedule of Company's financial instruments measured at fair value on a recurring basis

The following fair value hierarchy table presents information about the Company’s financial instruments measured at fair value on a recurring basis at the dates indicated:

	September 30, 2017
	Fair Value Measurement Using
	Level 1		Level 2		Level 3		Securities at Fair Value
	(dollars in thousands)
Investment securities available-for-sale:
Agency	$	—	$	50,379	$	—	$	50,379
Corporate	—		62,175		—		62,175
Municipal bonds	—		228,427		—		228,427
Collateralized mortgage obligation: residential	—		43,404		—		43,404
Mortgage-backed securities: residential	—		319,559		—		319,559
Total securities available-for-sale	$	—	$	703,944	$	—	$	703,944

	December 31, 2016
	Fair Value Measurement Using
	Level 1		Level 2		Level 3		Securities at Fair Value
	(dollars in thousands)
Investment securities available-for-sale:
Corporate	$	—	$	37,642	$	—	$	37,642
Municipal bonds	—		118,803		—		118,803
Collateralized mortgage obligation: residential	—		31,388		—		31,388
Mortgage-backed securities: residential	—		193,130		—		193,130
Total securities available-for-sale	$	—	$	380,963	$	—	$	380,963