Purchased Loans (Details 2) - Purchased - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Impaired loans
Unpaid Contractual Principal Balance	$ 9,239		$ 6,674
Recorded Investment With Allowance	4,827		4,538
Recorded Investment With No Allowance	3,728		1,847
Total Recorded Investment	8,555		6,385
Related Allowance	127		515
Average Recorded Investment	9,197	$ 2,333
Interest Income Recognized	58	19
Commercial, financial, agricultural
Impaired loans
Unpaid Contractual Principal Balance	567		732
Recorded Investment With Allowance	121		487
Recorded Investment With No Allowance	423		224
Total Recorded Investment	544		711
Related Allowance	18		310
Average Recorded Investment	541	8
Interest Income Recognized	2	0
Lease financing
Impaired loans
Unpaid Contractual Principal Balance	0		0
Recorded Investment With Allowance	0		0
Recorded Investment With No Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Real estate – construction
Impaired loans
Unpaid Contractual Principal Balance	0		147
Recorded Investment With Allowance	0		145
Recorded Investment With No Allowance	0		0
Total Recorded Investment	0		145
Related Allowance	0		0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Real estate – 1-4 family mortgage
Impaired loans
Unpaid Contractual Principal Balance	5,463		3,095
Recorded Investment With Allowance	1,746		1,496
Recorded Investment With No Allowance	3,114		1,385
Total Recorded Investment	4,860		2,881
Related Allowance	54		43
Average Recorded Investment	5,481	810
Interest Income Recognized	21	9
Real estate – commercial mortgage
Impaired loans
Unpaid Contractual Principal Balance	3,108		2,485
Recorded Investment With Allowance	2,898		2,275
Recorded Investment With No Allowance	178		183
Total Recorded Investment	3,076		2,458
Related Allowance	52		48
Average Recorded Investment	3,090	1,515
Interest Income Recognized	35	10
Installment loans to individuals
Impaired loans
Unpaid Contractual Principal Balance	101		215
Recorded Investment With Allowance	62		135
Recorded Investment With No Allowance	13		55
Total Recorded Investment	75		190
Related Allowance	3		114
Average Recorded Investment	85	0
Interest Income Recognized	0	0
Receivables Acquired with Deteriorated Credit Quality
Impaired loans
Unpaid Contractual Principal Balance	318,296		340,104
Recorded Investment With Allowance	85,974		89,257
Recorded Investment With No Allowance	169,765		182,501
Total Recorded Investment	255,739		271,758
Related Allowance	2,719		2,820
Average Recorded Investment	291,340	374,716
Interest Income Recognized	3,452	4,165
Receivables Acquired with Deteriorated Credit Quality \| Commercial, financial, agricultural
Impaired loans
Unpaid Contractual Principal Balance	21,357		20,697
Recorded Investment With Allowance	6,451		4,555
Recorded Investment With No Allowance	6,577		7,439
Total Recorded Investment	13,028		11,994
Related Allowance	378		372
Average Recorded Investment	14,088	18,024
Interest Income Recognized	247	327
Receivables Acquired with Deteriorated Credit Quality \| Lease financing
Impaired loans
Unpaid Contractual Principal Balance	0		0
Recorded Investment With Allowance	0		0
Recorded Investment With No Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		0
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Receivables Acquired with Deteriorated Credit Quality \| Real estate – construction
Impaired loans
Unpaid Contractual Principal Balance	0		1,141
Recorded Investment With Allowance	0		0
Recorded Investment With No Allowance	0		840
Total Recorded Investment	0		840
Related Allowance			0
Average Recorded Investment	0	2,608
Interest Income Recognized	0	25
Receivables Acquired with Deteriorated Credit Quality \| Real estate – 1-4 family mortgage
Impaired loans
Unpaid Contractual Principal Balance	80,398		86,725
Recorded Investment With Allowance	20,725		21,887
Recorded Investment With No Allowance	47,340		50,065
Total Recorded Investment	68,065		71,952
Related Allowance	767		841
Average Recorded Investment	78,341	101,089
Interest Income Recognized	865	953
Receivables Acquired with Deteriorated Credit Quality \| Real estate – commercial mortgage
Impaired loans
Unpaid Contractual Principal Balance	214,450		229,075
Recorded Investment With Allowance	58,271		62,449
Recorded Investment With No Allowance	114,448		122,538
Total Recorded Investment	172,719		184,987
Related Allowance	1,573		1,606
Average Recorded Investment	196,807	250,041
Interest Income Recognized	2,319	2,831
Receivables Acquired with Deteriorated Credit Quality \| Installment loans to individuals
Impaired loans
Unpaid Contractual Principal Balance	2,091		2,466
Recorded Investment With Allowance	527		366
Recorded Investment With No Allowance	1,400		1,619
Total Recorded Investment	1,927		1,985
Related Allowance	1		$ 1
Average Recorded Investment	2,104	2,954
Interest Income Recognized	$ 21	$ 29

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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