Fair Value Measurements and Fair Value of Financial Instruments (Details) - Schedule of fair value hierarchy - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial assets
Cash and cash equivalents, Carrying Amount	$ 200,399	$ 200,895	$ 126,847	$ 82,692
Cash and cash equivalents, Fair Value	200,399	200,895
Investment securities available-for-sale, Carrying Amount	353,290	195,770
Investment Securities Available-for-Sale, Fair Value	353,290	195,770
Investment securities held-to-maturity, Carrying Amount		224,056
Investment securities held-to-maturity, Fair Value		231,445
Restricted investment in bank stocks, Carrying Amount	24,310	32,612
Loans held-for-sale, Carrying Amount	78,005
Loans held-for-sale, Fair Value	78,005
Net loans, Carrying Amount	3,450,088	3,072,435
Net loans, Fair Value	3,462,138	3,059,343
Derivatives, Carrying Amount	88
Derivatives, Fair Value	88
Accrued interest receivable, Carrying Amount	12,965	12,545
Accrued interest receivable, Fair Value	12,965	12,545
Financial liabilities
Noninterest-bearing deposits, Carrying Amount	694,977	650,775
Noninterest-bearing deposits, Fair Value	694,977	650,775
Interest-bearing deposits, Carrying Amount	2,649,294	2,140,191
Interest-bearing deposits, Fair Value	2,649,717	2,137,149
Borrowings, Carrying Amount	476,280	671,587
Borrowings, Fair Value	478,286	674,131
Subordinated debentures, Carrying Amount	54,534	54,343
Subordinated debentures, Fair Value	55,901	55,209
Derivatives, Carrying Amount		131
Derivatives, Fair Value		131
Accrued interest payable, Carrying Amount	4,142	4,387
Accrued interest payable, Fair Value	4,142	4,387
Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and cash equivalents, Fair Value	200,399	200,895
Investment Securities Available-for-Sale, Fair Value	14,982	18,524
Investment securities held-to-maturity, Fair Value		29,226
Loans held-for-sale, Fair Value
Net loans, Fair Value
Derivatives, Carrying Amount
Derivatives, Fair Value
Accrued interest receivable, Fair Value		68
Financial liabilities
Noninterest-bearing deposits, Fair Value	694,977	650,775
Interest-bearing deposits, Fair Value	1,681,044
Borrowings, Fair Value
Subordinated debentures, Fair Value
Derivatives, Fair Value
Accrued interest payable, Fair Value
Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and cash equivalents, Fair Value
Investment Securities Available-for-Sale, Fair Value	320,090	177,246
Investment securities held-to-maturity, Fair Value		182,774
Loans held-for-sale, Fair Value	12,409
Net loans, Fair Value
Derivatives, Carrying Amount	88
Derivatives, Fair Value	88
Accrued interest receivable, Fair Value	2,026	2,699
Financial liabilities
Noninterest-bearing deposits, Fair Value
Interest-bearing deposits, Fair Value	968,673	777,498
Borrowings, Fair Value	478,286	674,131
Subordinated debentures, Fair Value	55,901	55,209
Derivatives, Fair Value		131
Accrued interest payable, Fair Value	4,142	4,387
Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and cash equivalents, Fair Value
Investment Securities Available-for-Sale, Fair Value	18,218
Investment securities held-to-maturity, Fair Value		18,558
Loans held-for-sale, Fair Value	65,596
Net loans, Fair Value	3,462,138	3,059,343
Derivatives, Carrying Amount
Derivatives, Fair Value
Accrued interest receivable, Fair Value	10,939	9,778
Financial liabilities
Noninterest-bearing deposits, Fair Value
Interest-bearing deposits, Fair Value
Borrowings, Fair Value
Subordinated debentures, Fair Value
Derivatives, Fair Value
Accrued interest payable, Fair Value