Fair Value Accounting (Details 3) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Financial Assets:
Other investments, at cost, Carrying Amount		$ 3,056	$ 4,462
Loans, Carrying Amount	[1]	1,446,460	1,374,624
Other investments, at cost, Fair Value		3,056	4,462
Loans, Fair Value	[1]	1,431,556	1,375,761
Financial Liabilities:
Deposits, Carrying Amount		1,520,523	1,381,123
FHLB and other borrowings, Carrying Amount		28,600	67,200
Junior subordinated debentures, Carrying Amount		13,403	13,403
Deposits, Fair Value		1,388,405	1,269,462
FHLB and other borrowings, Fair Value		28,839	67,890
Junior subordinated debentures, Fair Value		14,029	13,166
Level 1 [Member] | Estimate of Fair Value [Member]
Financial Assets:
Other investments, at cost, Fair Value
Loans, Fair Value	[1]
Financial Liabilities:
Deposits, Fair Value
FHLB and other borrowings, Fair Value
Junior subordinated debentures, Fair Value
Level 2 [Member] | Estimate of Fair Value [Member]
Financial Assets:
Other investments, at cost, Fair Value
Loans, Fair Value	[1]
Financial Liabilities:
Deposits, Fair Value		1,388,405	1,269,462
FHLB and other borrowings, Fair Value		28,839	67,890
Junior subordinated debentures, Fair Value		14,029	13,166
Level 3 [Member] | Estimate of Fair Value [Member]
Financial Assets:
Other investments, at cost, Fair Value		3,056	4,462
Loans, Fair Value	[1]	1,431,556	1,375,761
Financial Liabilities:
Deposits, Fair Value
FHLB and other borrowings, Fair Value
Junior subordinated debentures, Fair Value

[1] Carrying amount is net of the allowance for loan losses and previously presented impaired loans. In accordance with the prospective adoption of ASU No. 2016-01, the fair value of loans as of March 31, 2018 was measured using an exit price notion. The fair value of loans as of December 31, 2017 was measured using an entry price notion.