ALLOWANCE FOR LOAN LOSSES: (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Ending Balance Attributable to Loans
Individually evaluated for impairment	$ 7,373	$ 3,261
Collectively evaluated for impairment	14,337	14,841
Acquired with deteriorated credit quality	248	1,139
BALANCE AT END OF YEAR	21,958	19,241	22,336	19,437
Loans
Individually evaluated for impairment	30,694	27,606
Collectively evaluated for impairment	1,814,229	1,820,292
Acquired with deteriorated credit quality	17,009	56,386
Ending Balance	1,861,932	1,904,284
Commercial
Ending Balance Attributable to Loans
Individually evaluated for impairment	3,453	3,071
Collectively evaluated for impairment	7,286	8,264
Acquired with deteriorated credit quality	248	784
BALANCE AT END OF YEAR	10,987	12,119	12,809
Loans
Individually evaluated for impairment	23,721	25,393
Collectively evaluated for impairment	1,056,861	1,036,963
Acquired with deteriorated credit quality	13,582	43,389
Ending Balance	1,094,164	1,105,745
Residential
Ending Balance Attributable to Loans
Individually evaluated for impairment	3,920	190
Collectively evaluated for impairment	1,506	2,183
Acquired with deteriorated credit quality	0	355
BALANCE AT END OF YEAR	5,426	2,728	2,873
Loans
Individually evaluated for impairment	6,973	2,213
Collectively evaluated for impairment	487,486	492,139
Acquired with deteriorated credit quality	3,421	12,986
Ending Balance	497,880	507,338
Consumer
Ending Balance Attributable to Loans
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	3,879	3,889
Acquired with deteriorated credit quality	0	0
BALANCE AT END OF YEAR	3,879	3,889	4,551
Loans
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	269,882	291,190
Acquired with deteriorated credit quality	6	11
Ending Balance	269,888	291,201
Unallocated
Ending Balance Attributable to Loans
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,666	505
Acquired with deteriorated credit quality	0	0
BALANCE AT END OF YEAR	$ 1,666	$ 505	$ 2,103

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Recorded Investment in financing receivables.

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The balance of financing receivables that were acquired with deteriorated credit quality.

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-Publisher FASB

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The valuation allowance for financing receivables acquired with deteriorated credit quality.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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