BUSINESS SEGMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Net interest income	$ 12,903	$ 12,183	$ 25,794	$ 24,404
Noninterest income	4,671	4,324	9,394	8,493
Provision for loan losses	1,500	2,000	3,000	4,000
Salaries and benefits	6,408	5,817	12,521	11,790
Premises and equipment expense	2,413	2,386	4,744	4,736
Other noninterest expense	2,883	2,832	5,519	5,752
Income before income tax expense	4,370	3,472	9,404	6,619
Income tax expense	1,647	1,304	3,598	2,310
Net income	2,723	2,168	5,806	4,309
Total assets for period end	1,578,605		1,578,605		1,600,335
Banking
Segment Reporting Information [Line Items]
Net interest income	12,070	11,315	24,105	22,641
Noninterest income	1,351	1,427	2,826	2,812
Total income	13,421	12,742	26,931	25,453
Provision for loan losses	1,500	2,000	3,000	4,000
Salaries and benefits	5,060	4,616	9,935	9,381
Premises and equipment expense	2,263	2,218	4,455	4,392
Other noninterest expense	1,863	1,796	3,558	3,566
Total noninterest expense	10,686	10,630	20,948	21,339
Income before income tax expense	2,735	2,112	5,983	4,114
Income tax expense	1,030	802	2,289	1,436
Net income	1,705	1,310	3,694	2,678
Total assets for period end	1,577,237	1,509,446	1,577,237	1,509,446
PGB Trust & Investments
Segment Reporting Information [Line Items]
Net interest income	833	868	1,689	1,763
Noninterest income	3,320	2,897	6,568	5,681
Total income	4,153	3,765	8,257	7,444
Provision for loan losses
Salaries and benefits	1,348	1,201	2,586	2,409
Premises and equipment expense	150	168	289	344
Other noninterest expense	1,020	1,036	1,961	2,186
Total noninterest expense	2,518	2,405	4,836	4,939
Income before income tax expense	1,635	1,360	3,421	2,505
Income tax expense	617	502	1,309	874
Net income	1,018	858	2,112	1,631
Total assets for period end	1,368	1,294	1,368	1,294
Total
Segment Reporting Information [Line Items]
Net interest income	12,903	12,183	25,794	24,404
Noninterest income	4,671	4,324	9,394	8,493
Total income	17,574	16,507	35,188	32,897
Provision for loan losses	1,500	2,000	3,000	4,000
Salaries and benefits	6,408	5,817	12,521	11,790
Premises and equipment expense	2,413	2,386	4,744	4,736
Other noninterest expense	2,883	2,832	5,519	5,752
Total noninterest expense	13,204	13,035	25,784	26,278
Income before income tax expense	4,370	3,472	9,404	6,619
Income tax expense	1,647	1,304	3,598	2,310
Net income	2,723	2,168	5,806	4,309
Total assets for period end	$ 1,578,605	$ 1,510,740	$ 1,578,605	$ 1,510,740