FAIR VALUE MEASUREMENTS (Details 4) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014		Jun. 30, 2014	Dec. 31, 2013
Financial assets:
Cash and cash equivalents	$ 122,961	$ 132,365		$ 114,895	$ 100,779
Investment securities available for sale	649,015	672,421	[1]
Investment securities held to maturity	39,402	39,620	[1]
Loans held for sale	38,622	20,205	[1]
Loans, net	2,947,413	2,890,449	[1]
Purchased accounts receivable	69,933	44,821	[1]
Federal Home Loan Bank stock	21,976	19,499	[1]
Derivative assets	3,283	2,368
Accrued interest receivable	12,210	12,071
Financial liabilities:
Deposits	3,243,094	3,247,364	[1]
Short-term borrowings	355,500	250,500	[1]
Long-term debt	147,265	180,164	[1]
Derivative liabilities	2,680	2,497
Accrued interest payable	2,711	2,688
Level 1
Financial assets:
Cash and cash equivalents, Fair Value	122,961	132,365
Investment securities available for sale	60,129	66,028
Investment securities held to maturity, Fair Value	0	0
Loans held for sale, Fair Value	0	0
Loans, net, Fair Value	0	0
Purchased accounts receivable	0	0
Federal Home Loan Bank stock, at cost	0	0
Derivative assets	0	0
Accrued interest receivable, Fair Value	0	0
Financial liabilities:
Deposits, Fair Value	0	0
Short term borrowings, Fair Value	0	0
Long-term debt, Fair Value	0	0
Derivative liabilities, Fair Value	0	0
Accrued interest payable, Fair Value	0	0
Level 2
Financial assets:
Cash and cash equivalents, Fair Value	0	0
Investment securities available for sale	577,483	595,103
Investment securities held to maturity, Fair Value	39,977	40,404
Loans held for sale, Fair Value	38,622	20,205
Loans, net, Fair Value	10,191	1,241
Purchased accounts receivable	69,933	44,821
Federal Home Loan Bank stock, at cost	21,976	19,499
Derivative assets	2,800	2,027
Accrued interest receivable, Fair Value	12,210	12,071
Financial liabilities:
Deposits, Fair Value	3,243,154	3,245,431
Short term borrowings, Fair Value	0	0
Long-term debt, Fair Value	0	0
Derivative liabilities, Fair Value	2,680	2,497
Accrued interest payable, Fair Value	2,711	2,688
Level 3
Financial assets:
Cash and cash equivalents, Fair Value	0	0
Investment securities available for sale	11,403	11,290
Investment securities held to maturity, Fair Value	0	0
Loans held for sale, Fair Value	0	0
Loans, net, Fair Value	2,970,620	2,918,332
Purchased accounts receivable	0	0
Federal Home Loan Bank stock, at cost	0	0
Derivative assets	483	341
Accrued interest receivable, Fair Value	0	0
Financial liabilities:
Deposits, Fair Value	0	0
Short term borrowings, Fair Value	355,500	250,500
Long-term debt, Fair Value	153,499	183,326
Derivative liabilities, Fair Value	0	0
Accrued interest payable, Fair Value	0	0
Estimate of Fair Value Measurement
Financial assets:
Cash and cash equivalents, Fair Value	122,961	132,365
Investment securities available for sale	649,015	672,421
Investment securities held to maturity, Fair Value	39,977	40,404
Loans held for sale, Fair Value	38,622	20,205
Loans, net, Fair Value	2,980,811	2,919,573
Purchased accounts receivable	69,933	44,821
Federal Home Loan Bank stock, at cost	21,976	19,499
Derivative assets	3,283	2,368
Accrued interest receivable, Fair Value	12,210	12,071
Financial liabilities:
Deposits, Fair Value	3,243,154	3,245,431
Short term borrowings, Fair Value	355,500	250,500
Long-term debt, Fair Value	153,499	183,326
Derivative liabilities, Fair Value	2,680	2,497
Accrued interest payable, Fair Value	$ 2,711	$ 2,688

[1] Derived from the audited consolidated financial statements included in the Company's 2014 Annual Report on Form 10-K.