Purchased Loans (Details 2) - Purchased - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Impaired loans
Unpaid Contractual Principal Balance	$ 8,013		$ 8,013		$ 6,674
Recorded Investment With Allowance	3,484		3,484		4,538
Recorded Investment With No Allowance	3,837		3,837		1,847
Total Recorded Investment	7,321		7,321		6,385
Related Allowance	78		78		515
Average Recorded Investment	7,836	$ 4,397	7,684	$ 4,363
Interest Income Recognized	78	42	116	61
Commercial, financial, agricultural
Impaired loans
Unpaid Contractual Principal Balance	350		350		732
Recorded Investment With Allowance	112		112		487
Recorded Investment With No Allowance	221		221		224
Total Recorded Investment	333		333		711
Related Allowance	16		16		310
Average Recorded Investment	342	237	347	241
Interest Income Recognized	1	2	3	2
Real estate – construction
Impaired loans
Unpaid Contractual Principal Balance					147
Recorded Investment With Allowance					145
Recorded Investment With No Allowance					0
Total Recorded Investment					145
Related Allowance					0
Real estate – 1-4 family mortgage
Impaired loans
Unpaid Contractual Principal Balance	5,058		5,058		3,095
Recorded Investment With Allowance	1,724		1,724		1,496
Recorded Investment With No Allowance	2,715		2,715		1,385
Total Recorded Investment	4,439		4,439		2,881
Related Allowance	48		48		43
Average Recorded Investment	4,960	1,644	5,032	1,634
Interest Income Recognized	47	5	62	14
Real estate – commercial mortgage
Impaired loans
Unpaid Contractual Principal Balance	2,581		2,581		2,485
Recorded Investment With Allowance	1,642		1,642		2,275
Recorded Investment With No Allowance	888		888		183
Total Recorded Investment	2,530		2,530		2,458
Related Allowance	11		11		48
Average Recorded Investment	2,515	2,504	2,284	2,474
Interest Income Recognized	30	35	51	45
Installment loans to individuals
Impaired loans
Unpaid Contractual Principal Balance	24		24		215
Recorded Investment With Allowance	6		6		135
Recorded Investment With No Allowance	13		13		55
Total Recorded Investment	19		19		190
Related Allowance	3		3		114
Average Recorded Investment	19	12	21	14
Interest Income Recognized	0	0	0	0
Receivables Acquired with Deteriorated Credit Quality
Impaired loans
Unpaid Contractual Principal Balance	292,792		292,792		340,104
Recorded Investment With Allowance	82,914		82,914		89,257
Recorded Investment With No Allowance	153,882		153,882		182,501
Total Recorded Investment	236,796		236,796		271,758
Related Allowance	2,160		2,160		2,820
Average Recorded Investment	270,769	360,392	272,564	362,348
Interest Income Recognized	3,199	4,341	6,501	8,355
Receivables Acquired with Deteriorated Credit Quality \| Commercial, financial, agricultural
Impaired loans
Unpaid Contractual Principal Balance	19,906		19,906		20,697
Recorded Investment With Allowance	6,255		6,255		4,555
Recorded Investment With No Allowance	5,751		5,751		7,439
Total Recorded Investment	12,006		12,006		11,994
Related Allowance	339		339		372
Average Recorded Investment	14,894	16,361	14,048	16,872
Interest Income Recognized	252	287	487	611
Receivables Acquired with Deteriorated Credit Quality \| Real estate – construction
Impaired loans
Unpaid Contractual Principal Balance					1,141
Recorded Investment With Allowance					0
Recorded Investment With No Allowance					840
Total Recorded Investment					840
Related Allowance					0
Average Recorded Investment	0	3,562	0	3,572
Interest Income Recognized	0	39	0	65
Receivables Acquired with Deteriorated Credit Quality \| Real estate – 1-4 family mortgage
Impaired loans
Unpaid Contractual Principal Balance	74,931		74,931		86,725
Recorded Investment With Allowance	19,206		19,206		21,887
Recorded Investment With No Allowance	43,950		43,950		50,065
Total Recorded Investment	63,156		63,156		71,952
Related Allowance	692		692		841
Average Recorded Investment	72,933	98,200	73,656	98,874
Interest Income Recognized	759	1,083	1,582	2,030
Receivables Acquired with Deteriorated Credit Quality \| Real estate – commercial mortgage
Impaired loans
Unpaid Contractual Principal Balance	196,028		196,028		229,075
Recorded Investment With Allowance	56,788		56,788		62,449
Recorded Investment With No Allowance	103,063		103,063		122,538
Total Recorded Investment	159,851		159,851		184,987
Related Allowance	1,128		1,128		1,606
Average Recorded Investment	181,007	239,564	182,894	240,254
Interest Income Recognized	2,169	2,903	4,394	5,593
Receivables Acquired with Deteriorated Credit Quality \| Installment loans to individuals
Impaired loans
Unpaid Contractual Principal Balance	1,927		1,927		2,466
Recorded Investment With Allowance	665		665		366
Recorded Investment With No Allowance	1,118		1,118		1,619
Total Recorded Investment	1,783		1,783		1,985
Related Allowance	1		1		$ 1
Average Recorded Investment	1,935	2,705	1,966	2,776
Interest Income Recognized	$ 19	$ 29	$ 38	$ 56

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=84173941&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=84173941&loc=d3e5258-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953550-111524

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